界: Encapsulation

カプセル化とは、強い境界線を引くことです。Web ブラウザの場合は、自分のモバイルコードが他のモバイルコードに悪用されないようにすることを意味します。サーバー上では、検証されたデータと検証されていないデータ、あるユーザーのデータと別のユーザーのデータ、またはユーザーが見ることを許可されたデータと許可されていないデータの区別などを意味する場合があります。

Insecure Storage: S3 Read ACP Anonymous Access

Java/JSP

Abstract

アプリケーションは、AWS S3 バケットまたはオブジェクトの Access Control Policy (ACP) への匿名の読み取りアクセス権を付与します。

Explanation

バケットまたはオブジェクトの Access Control Policy (ACP) の匿名の読み取りアクセス権を付与すると、攻撃者はどのオブジェクトの取得または上書きが可能かを知ることができます。

例 1: 次のコードは、foo バケットへ匿名の　ACP 読み取りアクセス権を付与する Access Control Policy を設定します。


    GetBucketAclRequest bucketAclReq = GetBucketAclRequest.builder().bucket("foo").build();
    GetBucketAclResponse getAclRes = s3.getBucketAcl(bucketAclReq);
    List<Grant> grants = getAclRes.grants();

    Grantee allusers = Grantee.builder().uri("http://acs.amazonaws.com/groups/global/AllUsers").build();
    Permission fc_permission = Permission.fromValue("READ_ACP");
    Grant grant = Grant.builder().grantee(allusers).permission(fc_permission).build();
    grants.add(grant);

    AccessControlPolicy acl = AccessControlPolicy.builder().grants(grants).build();

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 284, CWE ID 359

[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [4] CWE ID 200

[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [7] CWE ID 200

[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [20] CWE ID 200

[5] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002475

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

[7] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-28 Protection of Information at Rest (P1)

[8] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-28 Protection of Information at Rest

[9] Standards Mapping - OWASP API 2023 API2 Broken Authentication

[10] 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)

[11] Standards Mapping - OWASP Mobile 2014 M2 Insecure Data Storage

[12] Standards Mapping - OWASP Mobile 2024 M9 Insecure Data Storage

[13] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage

[14] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling

[15] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure

[16] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure

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

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.4

[19] 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

[20] 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

[21] 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

[22] 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

[23] 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

[24] 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

[25] 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

[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection

[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection

[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection

[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II, APP3310 CAT I, APP3340 CAT I

[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II, APP3340 CAT I

[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II, APP3340 CAT I

[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II, APP3340 CAT I

[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II, APP3340 CAT I

[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II, APP3340 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II, APP3340 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002340 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002340 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002340 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002340 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002340 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002340 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002340 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002340 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002340 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002340 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002340 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002340 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002340 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002340 CAT II

[50] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)

[51] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage

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