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84 changes: 84 additions & 0 deletions
84
terraform/aws/security/aws-opensearchserverless-encrypted-with-cmk.tf
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resource "aws_opensearchserverless_security_policy" "fail" { | ||
name = "fail" | ||
type = "encryption" | ||
description = "encryption security policy for example-collection" | ||
# ruleid: aws-opensearchserverless-encrypted-with-cmk | ||
policy = jsonencode({ | ||
Rules = [ | ||
{ | ||
Resource = [ | ||
"collection/example-collection" | ||
], | ||
ResourceType = "collection" | ||
} | ||
], | ||
AWSOwnedKey = true | ||
}) | ||
} | ||
|
||
resource "aws_opensearchserverless_security_policy" "fail_2_heredoc" { | ||
name = "fail_2_heredoc" | ||
type = "encryption" | ||
description = "encryption security policy with heredoc" | ||
# ruleid: aws-opensearchserverless-encrypted-with-cmk | ||
policy = <<POLICY | ||
{ | ||
"Rules": [ | ||
{ | ||
"Resource": [ | ||
"collection/example-collection" | ||
], | ||
"ResourceType": "collection" | ||
} | ||
], | ||
"AWSOwnedKey": true | ||
} | ||
POLICY | ||
} | ||
|
||
resource "aws_opensearchserverless_security_policy" "pass" { | ||
name = "pass" | ||
type = "encryption" | ||
description = "encryption security policy using customer KMS key" | ||
# ok: aws-opensearchserverless-encrypted-with-cmk | ||
policy = jsonencode({ | ||
Rules = [ | ||
{ | ||
Resource = [ | ||
"collection/customer-managed-key-collection" | ||
], | ||
ResourceType = "collection" | ||
} | ||
], | ||
AWSOwnedKey = false | ||
KmsARN = "arn:aws:kms:us-east-1:123456789012:key/93fd6da4-a317-4c17-bfe9-382b5d988b36" | ||
}) | ||
} | ||
|
||
# pass because this is a network policy and not encryption type policy | ||
resource "aws_opensearchserverless_security_policy" "pass2" { | ||
name = "pass2" | ||
type = "network" | ||
description = "Public access" | ||
# ok: aws-opensearchserverless-encrypted-with-cmk | ||
policy = jsonencode([ | ||
{ | ||
Description = "Public access to collection and Dashboards endpoint for example collection", | ||
Rules = [ | ||
{ | ||
ResourceType = "collection", | ||
Resource = [ | ||
"collection/example-collection" | ||
] | ||
}, | ||
{ | ||
ResourceType = "dashboard" | ||
Resource = [ | ||
"collection/example-collection" | ||
] | ||
} | ||
], | ||
AllowFromPublic = true | ||
} | ||
]) | ||
} |
45 changes: 45 additions & 0 deletions
45
terraform/aws/security/aws-opensearchserverless-encrypted-with-cmk.yaml
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rules: | ||
- id: aws-opensearchserverless-encrypted-with-cmk | ||
patterns: | ||
- pattern-inside: | | ||
resource "aws_opensearchserverless_security_policy" $ANYTHING { | ||
... | ||
type = "encryption" | ||
... | ||
} | ||
- pattern-either: | ||
- patterns: | ||
- pattern: policy = "$JSONPOLICY" | ||
- metavariable-pattern: | ||
metavariable: $JSONPOLICY | ||
language: json | ||
pattern: | | ||
{..., "AWSOwnedKey":true, ... } | ||
- patterns: | ||
- pattern-inside: policy = jsonencode(...) | ||
- pattern: | | ||
{..., AWSOwnedKey = true, ...} | ||
message: Ensure opensearch serverless is encrypted at rest using AWS KMS (Key | ||
Management Service) CMK (Customer Managed Keys). CMKs give you control | ||
over the encryption key in terms of access and rotation. | ||
languages: | ||
- terraform | ||
severity: WARNING | ||
metadata: | ||
category: security | ||
subcategory: | ||
- vuln | ||
cwe: | ||
- "CWE-320: CWE CATEGORY: Key Management Errors" | ||
confidence: LOW | ||
likelihood: MEDIUM | ||
impact: LOW | ||
source_rule_url: https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-encryption.html#serverless-encryption-policies | ||
references: | ||
- https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-encryption.html#serverless-encryption-policies | ||
technology: | ||
- terraform | ||
- aws | ||
owasp: | ||
- A2:2021 Cryptographic Failures | ||
- A5:2021 Security Misconfiguration |