界: Security Features
ソフトウェアのセキュリティは、セキュリティ ソフトウェアではありません。ここでは、認証、アクセス制御、機密性、暗号化、権限管理などのトピックについて説明します。
AWS CloudFormation Misconfiguration: Improper S3 Bucket Network Access Control
Abstract
Amazon S3 バケットは、すべての S3 パブリック アクセス ブロック設定を有効にせずに作成されます。
Explanation
設定ミスによる S3 バケットへのパブリック アクセスは、データ侵害の主な原因です。
S3 バケットはデフォルトでパブリック アクセスをブロックしますが、許可されたユーザーは、バケット ポリシーまたはアクセス制御リスト (ACL) を更新してパブリック アクセスを許可できます。
また、既存の、過度に許容的なバケット ポリシーと ACL を防ぐには、
S3 バケットはデフォルトでパブリック アクセスをブロックしますが、許可されたユーザーは、バケット ポリシーまたはアクセス制御リスト (ACL) を更新してパブリック アクセスを許可できます。
BlockPublicPolicy と BlockPublicAcls それぞれの設定を PublicAccessBlockConfiguration の S3 プロパティの下で有効にして、このタイプの更新を禁止します。また、既存の、過度に許容的なバケット ポリシーと ACL を防ぐには、
RestrictPublicBuckets と IgnorePublicAcls の設定を有効にしますReferences
[1] There's a Hole in that Bucket!: A Large-scale Analysis of Misconfigured S3 Buckets ACSAC '18: Proceedings of the 34th Annual Computer Security Applications Conference
[2] Blocking public access to your Amazon S3 storage Amazon Web Services, Inc.
[3] Standards Mapping - CIS Amazon Web Services Foundations Benchmark Recommendation 2.1.4
[4] Standards Mapping - Common Weakness Enumeration CWE ID 284, CWE ID 359
[5] Standards Mapping - Common Weakness Enumeration Top 25 2019 [4] CWE ID 200
[6] Standards Mapping - Common Weakness Enumeration Top 25 2020 [7] CWE ID 200
[7] Standards Mapping - Common Weakness Enumeration Top 25 2021 [20] CWE ID 200
[8] Standards Mapping - Common Weakness Enumeration Top 25 2024 [17] CWE ID 200
[9] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002038, CCI-002475
[10] Standards Mapping - FIPS200 CM
[11] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[12] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-5 Access Restrictions for Change (P1), IA-11 Re-Authentication (P0), SC-28 Protection of Information at Rest (P1)
[13] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-5 Access Restrictions for Change, SC-11 Trusted Path, SC-28 Protection of Information at Rest
[14] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[15] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.4.2 Access Control Architectural Requirements (L2 L3), 1.4.4 Access Control Architectural Requirements (L2 L3), 8.3.4 Sensitive Private Data (L1 L2 L3), 10.2.1 Malicious Code Search (L2 L3)
[16] Standards Mapping - OWASP Mobile 2014 M2 Insecure Data Storage
[17] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[18] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling
[19] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration, A7 Insecure Cryptographic Storage, A8 Failure to Restrict URL Access
[20] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[21] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[22] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.4
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.6, Requirement 8.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.4
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.3.1, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.1, Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection
[35] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 863
[36] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 863
[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II, APP3310 CAT I, APP3340 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II, APP3340 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II, APP3340 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II, APP3340 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II, APP3340 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II, APP3340 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II, APP3340 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002340 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002340 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002340 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002340 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002340 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002340 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002340 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002340 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002340 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002340 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002340 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002340 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002340 CAT II
[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001410 CAT II, APSC-DV-001520 CAT II, APSC-DV-002340 CAT II
[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001410 CAT II, APSC-DV-001520 CAT II, APSC-DV-002340 CAT II
[59] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)
[60] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage
desc.structural.json.aws_cloudformation_misconfiguration_improper_s3_bucket_network_access_control.base
Abstract
Amazon S3 バケットは、すべての S3 パブリック アクセス ブロック設定を有効にせずに作成されます。
Explanation
S3 バケットへのパブリック アクセスの設定ミスは、データ侵害の主な原因です。
S3 バケットはデフォルトでパブリック アクセスをブロックしますが、許可されたユーザーは、バケット ポリシーまたはアクセス制御リスト (ACL) を更新してパブリック アクセスを許可できます。
S3 バケットはデフォルトでパブリック アクセスをブロックしますが、許可されたユーザーは、バケット ポリシーまたはアクセス制御リスト (ACL) を更新してパブリック アクセスを許可できます。
References
[1] Manage S3 buckets in AWS Ansible project contributors
[2] There's a Hole in that Bucket!: A Large-scale Analysis of Misconfigured S3 Buckets ACSAC '18: Proceedings of the 34th Annual Computer Security Applications Conference
[3] Blocking public access to your Amazon S3 storage Amazon Web Services, Inc.
[4] Standards Mapping - CIS Amazon Web Services Foundations Benchmark Recommendation 2.1.4
[5] Standards Mapping - Common Weakness Enumeration CWE ID 284, CWE ID 359
[6] Standards Mapping - Common Weakness Enumeration Top 25 2019 [4] CWE ID 200
[7] Standards Mapping - Common Weakness Enumeration Top 25 2020 [7] CWE ID 200
[8] Standards Mapping - Common Weakness Enumeration Top 25 2021 [20] CWE ID 200
[9] Standards Mapping - Common Weakness Enumeration Top 25 2024 [17] CWE ID 200
[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002038, CCI-002475
[11] Standards Mapping - FIPS200 CM
[12] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[13] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-5 Access Restrictions for Change (P1), IA-11 Re-Authentication (P0), SC-28 Protection of Information at Rest (P1)
[14] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-5 Access Restrictions for Change, SC-11 Trusted Path, SC-28 Protection of Information at Rest
[15] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[16] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.4.2 Access Control Architectural Requirements (L2 L3), 1.4.4 Access Control Architectural Requirements (L2 L3), 8.3.4 Sensitive Private Data (L1 L2 L3), 10.2.1 Malicious Code Search (L2 L3)
[17] Standards Mapping - OWASP Mobile 2014 M2 Insecure Data Storage
[18] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[19] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling
[20] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration, A7 Insecure Cryptographic Storage, A8 Failure to Restrict URL Access
[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 A01 Broken Access Control
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.6, Requirement 8.4
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.4
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.2.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.3.1, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.1, Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 4.2.2, Requirement 6.2.4, Requirement 8.3.1
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection
[35] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection
[36] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 863
[37] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 863
[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 4.2 APSC-DV-002340 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002340 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002340 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002340 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002340 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002340 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002340 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002340 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002340 CAT II
[54] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002340 CAT II
[55] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002340 CAT II
[56] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002340 CAT II
[57] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002340 CAT II
[58] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001410 CAT II, APSC-DV-001520 CAT II, APSC-DV-002340 CAT II
[59] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001410 CAT II, APSC-DV-001520 CAT II, APSC-DV-002340 CAT II
[60] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)
[61] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage
desc.structural.yaml.aws_cloudformation_misconfiguration_improper_s3_bucket_network_access_control.base