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。

AWS CloudFormation Misconfiguration: Insecure SNS Topic Storage

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Abstract

このテンプレートは、暗号化されていない SNS トピックを定義します。

Explanation

デフォルトでは、SNS トピックは保存時に暗号化されません。そのため、許可されていない閲覧者にデータが公開される可能性があります。

例 1: 次のテンプレートの例では、AWS KMS キー識別子の定義を怠ったため、SNS トピックの暗号化に失敗します。


{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "My SNS topic",
    "Resources": {
        "MySNSTopic": {
            "Type": "AWS::SNS::Topic",
            "Properties": {
                "Subscription": [
                    {
                        "Endpoint": "MySNSEndpoint",
                        "Protocol": "sqs"
                    }
                ],
                "TopicName": "MyTopic"
            }
        }
    }
}

References

[1] Michelle Mercier and Otavio Ferreira AWS Compute Blog: Encrypting messages published to Amazon SNS with AWS KMS

[2] AWS Documentation AWS SNS - Encryption at rest

[3] Standards Mapping - Common Weakness Enumeration CWE ID 311

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

[5] Standards Mapping - FIPS200 MP

[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 API8 Security Misconfiguration

[10] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 8.1.6 General Data Protection (L3)

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

[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage

[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage

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

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

[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3

[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4, Requirement 3.5.1

[22] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[23] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography, Control Objective B.2.5 - Terminal Software Design

[24] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography, Control Objective B.2.5 - Terminal Software Design

[25] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 311

[26] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 311

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

[28] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3500 CAT II

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[48] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002340 CAT II

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

desc.structural.json.aws_cloudformation_misconfiguration_insecure_sns_topic_storage.base

Abstract

このテンプレートは、暗号化されていない SNS トピックを定義します。

Explanation

デフォルトでは、SNS トピックは保存時に暗号化されません。そのため、許可されていない閲覧者にデータが公開される可能性があります。

例 1: 次の例は、AWS KMS キー識別子の定義を怠ったために SNS トピックの暗号化に失敗するテンプレートを示しています。


AWSTemplateFormatVersion: 2010-09-09
Description: My SNS Topic
Resources:
  MySNSTopic:
    Type: AWS::SNS::Topic
    Properties:
      Subscription:
        - Endpoint: "MySNSEndpoint"
      Protocol: "sqs"
      TopicName: "SampleTopic"