계: API Abuse

API는 호출자와 피호출자 간의 계약입니다. 가장 흔한 형태의 API 오용은 호출자가 이 계약에서 자신의 몫을 이행하지 못하기 때문에 발생합니다. 예를 들어, 프로그램이 chroot()를 호출한 후 chdir()을 호출하지 못하면 활성 루트 디렉터리를 안전하게 변경하는 방법을 지정하는 계약을 위반하는 것입니다. 라이브러리 오용의 또 다른 좋은 예는 피호출자가 호출자에게 신뢰할 만한 DNS 정보를 반환할 것으로 예상하는 것입니다. 이 경우, 호출자는 자신의 행동에 대해 특정한 가정을 함으로써(반환 값이 인증 목적으로 사용될 것으로 예상) 피호출자 API를 오용합니다. 다른 쪽에서 호출자-피호출자 계약을 위반할 수도 있습니다. 예를 들어, 코더가 하위 클래스 SecureRandom을 지정하고 임의 값이 아닌 값을 반환하는 경우 계약을 위반하는 것입니다.

ASP.NET Middleware Out of Order: Default Cookie Configuration

C#/VB.NET/ASP.NET

Abstract

응용 프로그램이 ASP.NET 쿠키 정책 미들웨어를 잘못 지정합니다.

Explanation

미들웨어 파이프라인에 올바른 순서로 추가되지 않은 ASP.NET Core 미들웨어는 의도한 대로 작동하지 않아 응용 프로그램이 다양한 보안 문제에 노출될 수 있습니다.

예제 1:UseCookiePolicy() 메서드는 쿠키 정책 미들웨어를 미들웨어 파이프라인에 추가하여 사용자 지정 쿠키 정책을 허용합니다. 표시된 대로 잘못된 순서로 지정하면 프로그래머가 지정한 모든 쿠키 정책이 무시됩니다.


...
var builder = WebApplication.CreateBuilder(...);
var app = builder.Build(...);
app.UseStaticFiles();
app.UseRouting();
app.UseSession();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
    ...
}

app.UseCookiePolicy();
...

References

[1] Rick Anderson, Steve Smith ASP.NET Core Middleware Microsoft

[2] Standards Mapping - Common Weakness Enumeration CWE ID 696, CWE ID 1188, CWE ID 565

[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002418, CCI-002420, CCI-002421, CCI-002422

[4] Standards Mapping - FIPS200 MP, SC

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

[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-6 Configuration Settings (P1), SC-8 Transmission Confidentiality and Integrity (P1)

[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-6 Configuration Settings, SC-8 Transmission Confidentiality and Integrity

[8] Standards Mapping - OWASP Application Security Verification Standard 4.0 4.1.1 General Access Control Design (L1 L2 L3)

[9] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage

[10] Standards Mapping - OWASP Mobile 2024 M8 Security Misconfiguration

[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management

[12] Standards Mapping - OWASP Top 10 2007 A9 Insecure Communications

[13] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration

[14] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration

[15] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration

[16] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 4.1, Requirement 6.5.10

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 4.1, Requirement 6.3.1.4, Requirement 6.5.9

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 4.1, Requirement 6.5.4

[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 4.1, Requirement 6.5.4

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 4.1, Requirement 6.5.4

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 4.1, Requirement 6.5.4

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 4.1, Requirement 6.5.4

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 4.2.1, Requirement 6.2.4

[25] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7.1 - Use of Cryptography

[26] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design, Control Objective 2.3 - Secure Defaults

[27] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design, Control Objective 2.3 - Secure Defaults, Control Objective C.4.1 - Web Software Communications

[28] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II

[29] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II

[30] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II

[31] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[50] Standards Mapping - Web Application Security Consortium Version 2.00 Application Misconfiguration (WASC-15)

[51] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authentication

desc.controlflow.dotnet.asp_dotnet_middleware_out_of_order_default_cookie_configuration