계: Security Features

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Kubernetes Misconfiguration: Image Authorization Bypass

YAML

Abstract

AlwaysPullImages 승인 컨트롤러가 Kubernetes API 서버에서 활성화되지 않았습니다.

Explanation

레지스트리에서 컨테이너 이미지를 풀링하려면 일반적으로 권한 부여가 필요합니다. 그러나 Kubernetes 노드는 이전에 시작된 컨테이너의 모든 이미지를 캐시합니다. 공격자는 캐시된 이미지로 컨테이너를 시작하여 필요한 권한 부여를 우회할 수 있습니다. AlwaysPullImages 승인 컨트롤러는 이 우회를 방지할 수 있습니다.

예제 1: 다음 구성은 --enable-admission-plugins 플래그에 AlwaysPullImages 승인 컨트롤러 없이 Kubernetes API 서버를 시작합니다.


...
kind: Pod
...
spec:
  containers:
  - command:
    - kube-apiserver
    ...
    - --enable-admission-plugins=PodNodeSelector,LimitRanger
    ...

References

[1] Kubernetes API Server The Kubernetes Authors

[2] Using Admission Controllers The Kubernetes Authors

[3] Standards Mapping - CIS Kubernetes Benchmark Recommendation 1.2.11

[4] Standards Mapping - Common Weakness Enumeration CWE ID 264

[5] Standards Mapping - Common Weakness Enumeration Top 25 2020 [25] CWE ID 862

[6] Standards Mapping - Common Weakness Enumeration Top 25 2021 [18] CWE ID 862

[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-002165

[8] Standards Mapping - FIPS200 CM, SC

[9] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation

[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1)

[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement

[12] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration

[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.4.2 Access Control Architectural Requirements (L2 L3)

[14] Standards Mapping - OWASP Mobile 2014 M5 Poor Authorization and Authentication

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

[16] Standards Mapping - OWASP Top 10 2007 A4 Insecure Direct Object Reference

[17] Standards Mapping - OWASP Top 10 2010 A4 Insecure Direct Object References

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

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

[20] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.2, Requirement 6.5.10

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.5.4

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8

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

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4

[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control

[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control

[32] 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

[33] Standards Mapping - SANS Top 25 2009 Porous Defenses - CWE ID 285

[34] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 863

[35] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 863

[36] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I

[42] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[55] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[56] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[57] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[58] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Authorization (WASC-02)

[59] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authorization

desc.structural.yaml.kubernetes_misconfiguration_image_authorization_bypass