계: Encapsulation

캡슐화는 강력한 경계를 그리는 것입니다. 웹 브라우저에서는 사용자의 모바일 코드가 다른 모바일 코드에 의해 오용되지 않도록 하는 것을 의미합니다. 서버에서는 검증된 데이터와 검증되지 않은 데이터, 한 사용자의 데이터와 다른 사용자의 데이터, 데이터 사용자가 볼 수 있는 데이터와 볼 수 없는 데이터 간의 차별화를 의미할 수 있습니다.

Insecure Storage: Insufficient Cache Leak Protection

Objective-C
Swift

Abstract

응용 프로그램이 디스크 또는 메모리 캐시 용량을 0으로 설정하여 HTTP(S) 캐시를 비활성화하려고 하지만 이 설정이 적용된다는 보장이 없습니다.

Explanation

HTTP(S) 응답에 세션 쿠키 및 API 토큰과 같은 민감한 데이터가 포함될 수 있습니다. URL 로딩 시스템은 성능상의 이유로 모든 HTTP(S) 응답을 캐시하고 암호화하지 않은 상태로 {app ID}/Library/Caches/com.mycompany.myapp/Cache.db* 파일에 저장합니다.
개발자는 URLCache 클래스의 diskCapacity 또는 memoryCapacity 속성을 0으로 설정하여 HTTP(S) 응답 캐시 시스템을 실제로 비활성화했다고 생각할 수 있습니다. 하지만 NSURLCache 설명서에는, 장치의 메모리 또는 디스크 공간이 부족한 경우에만 디스크 및 메모리 캐시가 구성된 크기로 잘린다고 명시되어 있습니다. 두 설정은 보안 제어의 용도가 아니라 시스템이 시스템 리소스를 확보하여 성능을 향상시키기 위한 용도입니다.

References

[1] David Thiel iOS Application Security: The Definitive Guide for Hackers and Developers No Starch Press

[2] URLCache Apple

[3] Standards Mapping - CIS Azure Kubernetes Service Benchmark 1

[4] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 4

[5] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 3

[6] Standards Mapping - CIS Google Kubernetes Engine Benchmark normal

[7] Standards Mapping - Common Weakness Enumeration CWE ID 311, CWE ID 312, CWE ID 313, CWE ID 522

[8] Standards Mapping - Common Weakness Enumeration Top 25 2019 [13] CWE ID 287

[9] Standards Mapping - Common Weakness Enumeration Top 25 2020 [14] CWE ID 287, [18] CWE ID 522

[10] Standards Mapping - Common Weakness Enumeration Top 25 2021 [14] CWE ID 287, [21] CWE ID 522

[11] Standards Mapping - Common Weakness Enumeration Top 25 2022 [14] CWE ID 287

[12] Standards Mapping - Common Weakness Enumeration Top 25 2023 [13] CWE ID 287

[13] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001350, CCI-002475

[14] Standards Mapping - FIPS200 MP

[15] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection

[16] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-28 Protection of Information at Rest (P1)

[17] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-28 Protection of Information at Rest

[18] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage

[19] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage

[20] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage

[21] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure

[22] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure

[23] Standards Mapping - OWASP Top 10 2021 A04 Insecure Design

[24] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.7.1 Out of Band Verifier Requirements (L1 L2 L3), 2.7.2 Out of Band Verifier Requirements (L1 L2 L3), 2.7.3 Out of Band Verifier Requirements (L1 L2 L3), 2.8.4 Single or Multi Factor One Time Verifier Requirements (L2 L3), 2.8.5 Single or Multi Factor One Time Verifier Requirements (L2 L3), 2.10.2 Service Authentication Requirements (L2 L3), 2.10.3 Service Authentication Requirements (L2 L3), 3.7.1 Defenses Against Session Management Exploits (L1 L2 L3), 6.1.1 Data Classification (L2 L3), 6.1.2 Data Classification (L2 L3), 6.1.3 Data Classification (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 8.1.6 General Data Protection (L3), 8.2.2 Client-side Data Protection (L1 L2 L3), 9.2.3 Server Communications Security Requirements (L2 L3)

[25] Standards Mapping - OWASP Mobile 2014 M2 Insecure Data Storage

[26] Standards Mapping - OWASP Mobile 2024 M9 Insecure Data Storage

[27] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-STORAGE-1

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3

[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3

[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography

[34] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design

[35] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design

[36] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 311

[37] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 311

[38] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II, APP3310 CAT I, APP3340 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II, APP3340 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II, APP3340 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II, APP3340 CAT I

[42] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II, APP3340 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II, APP3340 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II, APP3340 CAT I

[45] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[55] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[56] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[57] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[58] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001350 CAT II, APSC-DV-002340 CAT II

[59] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)

desc.semantic.objc.insecure_storage_insufficient_cache_leak_protection