HIGH

Ensure Lambda functions do not use wildcards in resource policies

Lambda resource policies should not use wildcards for principals or actions without proper conditions.

Security Impact

Wildcard policies can allow unintended access to invoke or manage Lambda functions.

How to Remediate

Replace wildcard principals with specific AWS account IDs, roles, or services. Add conditions like aws:SourceArn.

Affected Resources

AWS::Lambda::Permission

Compliance Frameworks

SOC 2PCI-DSSNIST 800-53

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Check Details

Check ID
aws-lambda-18
Service
AWS Lambda
Category
Access Control
Severity
HIGH

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