계: Security Features

소프트웨어 보안은 보안 소프트웨어가 아닙니다. 여기서는 인증, 액세스 제어, 기밀성, 암호화, 권한 관리 등의 항목에 대해 설명합니다.

Weak Cryptographic Hash: Insecure PBE Iteration Count

Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 바꿀 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


...
Rfc2898DeriveBytes rdb8 = new Rfc2898DeriveBytes(password, salt,50);
...


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 사소한 사전 기반 공격에 노출됩니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 되어 있는 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.semantic.dotnet.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 확인할 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


...
#define ITERATION 50
...
PKCS5_PBKDF2_HMAC(pass, sizeof(pass), salt, sizeof(salt), ITERATION, EVP_sha512(), outputBytes, digest);
...


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 간단한 사전 기반 공격에 취약해집니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 되어 있는 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem Sonmez Turan, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.semantic.cpp.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 확인할 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


...
final int iterationCount=50;
PBEParameterSpec pbeps=new PBEParameterSpec(salt,iterationCount);
...


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 간단한 사전 기반 공격에 취약해집니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 되어 있는 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[5] Manuel Egele, David Brumley, Yanick Fratantonio, Christopher Kruegel An Empirical Study of Cryptographic Misuse in Android Applications
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.semantic.java.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
비밀번호 기반 키 파생 함수가 사용하는 알고리즘 반복 횟수가 너무 적습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 확인할 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수 50을 사용합니다.


...
const iterations = 50;
crypto.pbkdf2(
password,
salt,
iterations,
keyLength,
"sha256",
function (err, derivedKey) { ... }
);


비밀번호 기반 암호화에 사용하는 반복 횟수가 적은 응용 프로그램은 심각도가 낮은 사전 기반 공격(비밀번호 기반 암호화 체계를 통해 방지하려는 공격 유형)에 노출됩니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.structural.javascript.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 확인할 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


...
#define ITERATION 50
...
CCKeyDerivationPBKDF(kCCPBKDF2,
password,
passwordLen,
salt,
saltLen
kCCPRFHmacAlgSHA256,
ITERATION,
derivedKey,
derivedKeyLen);
...


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 간단한 사전 기반 공격에 노출됩니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 되어 있는 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.semantic.objc.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 바꿀 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 50을 반복 횟수로 사용합니다.


...
$hash = hash_pbkdf2('sha256', $password, $salt, 50);
...


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 사소한 사전 기반 공격에 노출됩니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 설계된 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.semantic.php.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 바꿀 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


...
from hashlib import pbkdf2_hmac
dk = pbkdf2_hmac('sha256', password, salt, 50)
...


비밀번호 기반 암호화에 사용하는 반복 횟수가 적은 응용 프로그램은 심각도가 낮은 사전 기반 공격(비밀번호 기반 암호화 체계를 통해 방지하려는 공격 유형)에 노출됩니다.

예제 2: 다음 코드는 비용 매개 변수를 11로 설정합니다.

bcrypt_hash = bcrypt(b64pwd, 11)

Pycryptodome에서 bcrypt API를 사용할 때는 기본 해싱 프로세스의 계산 복잡도를 결정할 때 비용 매개 변수가 중요하다는 점을 기억해야 합니다. 충분한 보안 수준을 보장하려면 비용 매개 변수를 12 이상의 값으로 설정하는 것이 좋습니다. 이 값은 해시 계산에 소요되는 시간에 직접 영향을 주므로 높은 값을 설정하면 잠재적 공격자가 무차별 대입 또는 사전 공격을 수행하는 과정에서 발생하는 계산 비용이 증가합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.semantic.python.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 확인할 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


require 'openssl'
...
key = OpenSSL::PKCS5::pbkdf2_hmac(pass, salt, 50, 256, 'SHA256')


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 사소한 사전 기반 공격에 노출됩니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 되어 있는 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem Sonmez Turan, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.structural.ruby.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
암호 기반 키 파생 함수에서 사용하는 반복 횟수가 지나치게 낮습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 확인할 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 코드에서는 반복 횟수를 50으로 사용합니다.


...
let ITERATION = UInt32(50)
...
CCKeyDerivationPBKDF(CCPBKDFAlgorithm(kCCPBKDF2),
password,
passwordLength,
saltBytes,
saltLength,
CCPseudoRandomAlgorithm(kCCPRFHmacAlgSHA256),
ITERATION,
derivedKey,
derivedKeyLength)
...


암호 기반 암호화에 낮은 반복 횟수를 사용하는 응용 프로그램은 간단한 사전 기반 공격에 노출됩니다. 특히, 암호 기반 암호화 스키마를 통해 보호하도록 되어 있는 공격 유형이 여기에 해당합니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.structural.swift.weak_cryptographic_hash_insecure_pbe_iteration_count
Abstract
비밀번호 기반 키 파생 함수가 사용하는 알고리즘 반복 횟수가 너무 적습니다.
Explanation
키 파생 함수는 기본 키 및 기타 매개 변수에서 키를 파생하는 데 사용됩니다. 비밀번호 기반 키 파생 함수에서 기본 키는 비밀번호이며, 솔트 값과 반복 횟수가 기타 매개 변수로 사용됩니다. 반복 횟수가 매개 변수로 사용되어 온 이유는 비밀번호에서 키를 생성하는 비용을 늘리기 위해서였습니다. 그러므로 반복 횟수가 너무 적으면 공격자가 응용 프로그램의 "레인보우 테이블"을 계산하여 해시된 비밀번호 값을 더 쉽게 바꿀 수 있게 되므로 공격 실행 가능성이 높아집니다.

예제 1: 다음 XML은 반복 횟수를 50으로 구성합니다.


...
<param name="keyObtentionIterations" value="50"/>
...


비밀번호 기반 암호화에 사용하는 반복 횟수가 적은 응용 프로그램은 심각도가 낮은 사전 기반 공격(비밀번호 기반 암호화 체계를 통해 방지하려는 공격 유형)에 노출됩니다.
References
[1] B. Kaliski PKCS #5: Password-Based Cryptography Specification Version 2.0. Network Working Group
[2] Martin Abadi and Bogdan Warinschi Password-Based Encryption Analyzed.
[3] Mihir Bellare, Thomas Ristenpart, and Stefano Tessaro Multi-Instance Security and its Application to Password-Based Cryptography.
[4] M. Egele, D. Brumley, Y. Fratantonio, and C. Kruegel An Empirical Study of Cryptographic Misuse in Android Applications.
[5] Meltem SonmezTuran, Elaine Barker, William Burr, and Lily Chen NIST Special Publication 800-132: Recommendation for Password-Based Key Derivation. NIST
[6] Standards Mapping - Common Weakness Enumeration CWE ID 916
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001188, CCI-002450
[8] Standards Mapping - FIPS200 MP
[9] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-13 Cryptographic Protection (P1), SC-23 Session Authenticity (P1)
[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-13 Cryptographic Protection, SC-23 Session Authenticity
[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.4.1 Credential Storage Requirements (L2 L3), 2.4.2 Credential Storage Requirements (L2 L3), 2.4.3 Credential Storage Requirements (L2 L3), 2.4.4 Credential Storage Requirements (L2 L3), 2.4.5 Credential Storage Requirements (L2 L3), 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.9.3 Cryptographic Software and Devices Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.2 Algorithms (L2 L3), 8.3.7 Sensitive Private Data (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[13] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[14] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[16] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[17] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[18] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[19] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[20] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective 7.4 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[34] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 759
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002020 CAT II, APSC-DV-002030 CAT II, APSC-DV-002290 CAT II
desc.config.xml.weak_cryptographic_hash_insecure_pbe_iteration_count