Kingdom: Security Features

Software security is not security software. Here we're concerned with topics like authentication, access control, confidentiality, cryptography, and privilege management.

AWS CloudFormation Misconfiguration: Insecure ElastiCache Transport

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Abstract

The template defines an ElastiCache replication group without transport encryption.

Explanation

Unencrypted communication channels are prone to eavesdropping and tampering.

By default, ElastiCache replication group transport encryption is disabled. This exposes the data to unauthorized access, potential theft, and tampering.

Example 1: The following example template defines an ElastiCache replication group without transport encryption enabled.


{
    "Resources": {
        "ReplicationGroup": {
            "Properties": {
            "Engine": "redis",
            "EngineVersion": "EngineVersion",
            "ReplicasPerNodeGroup": "NumReplicas",
            "PreferredMaintenanceWindow": "sat:07:00-sat:08:00",
            "AtRestEncryptionEnabled": true,
            "CacheParameterGroupName": "CacheParameterGroup",
            "SecurityGroupIds": [
                "SecurityGroup"
            ],
            "SnapshotRetentionLimit": "SnapshotRetentionLimit",
            "CacheNodeType": "CacheNodeType",
            "CacheSubnetGroupName": "CacheSubnetGroupName",
            "NumNodeGroups": "NumShards",
            "SnapshotWindow": "00:00-03:00",
            "ReplicationGroupDescription": "AWS::StackName"
            },
            "UpdatePolicy": {
            "UseOnlineResharding": true
            },
            "DeletionPolicy": "Snapshot",
            "UpdateReplacePolicy": "Snapshot",
            "Type": "AWS::ElastiCache::ReplicationGroup"
        }
    }
}

References

[1] Amazon Web Services ElastiCache for Redis in-transit encryption (TLS)

[2] Standards Mapping - CIS Azure Kubernetes Service Benchmark 4

[3] Standards Mapping - CIS Microsoft Azure Foundations Benchmark partial

[4] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 5

[5] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 1

[6] Standards Mapping - CIS Google Kubernetes Engine Benchmark confidentiality

[7] Standards Mapping - CIS Kubernetes Benchmark complete

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

[9] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000068, CCI-001453, CCI-002418, CCI-002420, CCI-002421, CCI-002422, CCI-002890, CCI-003123

[10] Standards Mapping - FIPS200 CM, SC

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

[12] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-8 Transmission Confidentiality and Integrity (P1)

[13] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-8 Transmission Confidentiality and Integrity

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

[15] Standards Mapping - OWASP Top 10 2007 A9 Insecure Communications

[16] Standards Mapping - OWASP Top 10 2010 A9 Insufficient Transport Layer Protection

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

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

[19] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration

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

[21] 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)

[22] Standards Mapping - OWASP Mobile 2014 M3 Insufficient Transport Layer Protection

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 4.1, Requirement 6.5.10

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 4.1, Requirement 6.3.1.4, Requirement 6.5.9

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 4.1, Requirement 6.5.4

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 4.1, Requirement 6.5.4

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 4.1, Requirement 6.5.4

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 4.1, Requirement 6.5.4

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 4.1, Requirement 6.5.4

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 4.2.1, Requirement 6.2.4

[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography, Control Objective C.4.1 - Web Software Communications

[34] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 319

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

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

[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260.1 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II, APP3260 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000160 CAT II, APSC-DV-000170 CAT II, APSC-DV-001940 CAT II, APSC-DV-001950 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[57] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Transport Layer Protection (WASC-04)

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

desc.structural.json.aws_cloudformation_misconfiguration_insecure_elasticache_transport.base

Abstract

The template defines an ElastiCache replication group without transport encryption.

Explanation


Resources:
  ReplicationGroup:
    DeletionPolicy: Snapshot
    UpdateReplacePolicy: Snapshot
    Type: AWS::ElastiCache::ReplicationGroup
    Properties:
      ReplicationGroupDescription: !Ref 'AWS::StackName'
      AtRestEncryptionEnabled: true
      CacheNodeType: !Ref CacheNodeType
      CacheParameterGroupName: !Ref CacheParameterGroup
      CacheSubnetGroupName: !Ref CacheSubnetGroupName
      Engine: redis
      EngineVersion: !Ref EngineVersion
      NumNodeGroups: !Ref NumShards
      ReplicasPerNodeGroup: !Ref NumReplicas
      PreferredMaintenanceWindow: 'sat:07:00-sat:08:00'
      SecurityGroupIds:
      - !Ref SecurityGroup
      SnapshotRetentionLimit: !Ref SnapshotRetentionLimit
      SnapshotWindow: '00:00-03:00'
    UpdatePolicy:
      UseOnlineResharding: true