계: Security Features
소프트웨어 보안은 보안 소프트웨어가 아닙니다. 여기서는 인증, 액세스 제어, 기밀성, 암호화, 권한 관리 등의 항목에 대해 설명합니다.
Access Control: Case-Insensitive Package Name Comparison
Abstract
응용 프로그램이 대/소문자를 구분하지 않는 방식으로 Android 패키지를 사용자가 제어하는 값과 비교하며, 이로 인해 공격자가 패키지 이름에 기반하여 액세스 제어를 우회할 수 있습니다.
Explanation
Android에서 패키지 이름은 대/소문자를 구분하기 때문에 대/소문자를 구분하는 방식으로 비교해야 합니다. 악성 응용 프로그램이 대/소문자가 다른 유사한 패키지를 공유하여 액세스 제어를 우회할 수 있습니다.
예제 1: 다음 코드는 액세스 제어 용도로 안전하지 않은 문자열 비교를 수행합니다.
예제 1: 다음 코드는 액세스 제어 용도로 안전하지 않은 문자열 비교를 수행합니다.
public boolean isTrusted(String paramString) {
if (this._applicationContext.getPackageName().equalsIgnoreCase(paramString)) {
return true;
}
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 285
[2] Standards Mapping - Common Weakness Enumeration Top 25 2023 [24] CWE ID 863
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-001084, CCI-002165
[4] Standards Mapping - FIPS200 AC
[5] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1), SC-3 Security Function Isolation (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement, SC-3 Security Function Isolation
[8] Standards Mapping - OWASP Application Security Verification Standard 4.0 4.1.3 General Access Control Design (L1 L2 L3), 4.1.5 General Access Control Design (L1 L2 L3), 4.2.1 Operation Level Access Control (L1 L2 L3), 13.1.4 Generic Web Service Security Verification Requirements (L2 L3)
[9] Standards Mapping - OWASP Mobile 2014 M5 Poor Authorization and Authentication
[10] Standards Mapping - OWASP Mobile 2024 M3 Insecure Authentication/Authorization
[11] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-AUTH-1
[12] Standards Mapping - OWASP Top 10 2004 A2 Broken Access Control
[13] Standards Mapping - OWASP Top 10 2007 A10 Failure to Restrict URL Access
[14] Standards Mapping - OWASP Top 10 2010 A8 Failure to Restrict URL Access
[15] Standards Mapping - OWASP Top 10 2013 A7 Missing Function Level Access Control
[16] Standards Mapping - OWASP Top 10 2017 A5 Broken Access Control
[17] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.2, Requirement 7.2
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.5, Requirement 6.5.10, Requirement 7.2
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8, Requirement 7.2
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8, Requirement 7.2
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8, Requirement 7.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8, Requirement 7.2
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8, Requirement 7.2
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4, Requirement 7.3.1
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 5.4 - Authentication and Access Control, Control Objective C.2.3 - Web Software Access Controls
[29] Standards Mapping - SANS Top 25 2009 Porous Defenses - CWE ID 285
[30] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 285
[31] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 863
[32] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3470.1 CAT II, APP3470.4 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3470.1 CAT II, APP3470.4 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3470.1 CAT II, APP3470.4 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3470.1 CAT II, APP3470.4 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3470.1 CAT II, APP3470.4 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3470.1 CAT II, APP3470.4 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3470.1 CAT II, APP3470.4 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II
[54] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Authentication (WASC-01)
[55] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authentication
desc.dataflow.java.access_control_case_insensitive_package_name_comparison