界: Security Features

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AWS CloudFormation Misconfiguration: Improper S3 Bucket Network Access Control

Abstract
在未啟用所有「「S3 封鎖公開存取」設定的情況下建立 Amazon S3 儲存貯體。
Explanation
由於組態錯誤而提供對 S3 儲存貯體的公開存取，是導致資料外洩的主因。
儘管 S3 儲存貯體預設會封鎖公開存取，但任何獲授權的使用者都可以更新儲存貯體原則或存取控制清單 (ACL) 以允許公開存取。請在 PublicAccessBlockConfiguration 的 S3 屬性下分別啟用 BlockPublicPolicy 和 BlockPublicAcls 的設定，來禁止這類型的更新。
此外，為了分別防止任何已存在的過度允許的儲存貯體原則和 ACL，請啟用 RestrictPublicBuckets 和 IgnorePublicAcls 的設定。
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
在未啟用所有「「S3 封鎖公開存取」設定的情況下建立 Amazon S3 儲存貯體。
Explanation
S3 儲存貯體公開存取的組態不正確是導致資料外洩的主因。

儘管 S3 儲存貯體預設會封鎖公開存取，但任何獲授權的使用者都可以更新儲存貯體原則或存取控制清單 (ACL) 以允許公開存取。
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