Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

aws/aws-sdk-go

              main @ 070853e
            

Fixes

CVEs

HIGH

Peak severity

Highlights

Denial of Service: 23 prior fixes. Scrutinize any change in this area.

aws/signer/v4: most-fixed (5 issues). Treat as high-risk during review.

3 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Cryptographic Issues: The client-side encryption implementations historically contained cryptographic vulnerabilities associated with weak CBC modes and unauthenticated encryption, leading to the creation of the V2 client. Developers must strictly enforce the deprecation of legacy S3 crypto clients to avoid cleartext or tampered data risk.

Denial of Service: The S3 multi-part upload manager suffered from several concurrency and memory management issues, including deadlocks via blocked channel producers, infinite loops on unexpected EOFs, and memory leaks from unreturned sync.Pool buffers or persistent chunk references.

Cryptographic Signature Bypass: Signature Version 4 signing did not always enforce validation or inclusion of critical headers (like X-Amz-Server-Side-Encryption-Context, X-Amz-Tagging, or session tokens) in the signature base, leaving these values mutable by intermediaries.