Ensure S3 bucket CORS policy is restrictive
Cross-Origin Resource Sharing (CORS) policies control which domains can access bucket resources from web browsers. Overly permissive policies expose data to unauthorized websites.
Security Impact
Permissive CORS (AllowedOrigins: *) allows any website to make requests to your bucket from users' browsers.
How to Remediate
Review CORS configuration and specify allowed origins explicitly. Avoid using * for AllowedOrigins on sensitive buckets.
Affected Resources
Compliance Frameworks
How TigerGate Helps
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- Continuous Scanning
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- Instant Alerts
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- One-Click Remediation
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- Compliance Evidence
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- Drift Detection
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Check Details
- Check ID
- aws-s3-16
- Service
- Simple Storage Service (S3)
- Category
- Access Control
- Severity
- MEDIUM
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