Security context

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

secure-systems-lab/securesystemslib

              main @ 3014d1b
            

Fixes

CVEs

HIGH

Peak severity

66.7%

Coverage

Highlights

Auth Bypass: 4 prior fixes. Scrutinize any change in this area.

securesystemslib/signer/_crypto_signer.py: most-fixed (3 issues). Treat as high-risk during review.

8 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.

Auth Bypass: Multiple auth bypass fixes in CryptoSigner.__init__ show a history of insufficient key matching and key-pair validation, allowing attackers to use mismatched or malformed keys.

Signature Verification Bypass: Signature verification bypasses due to missing validation of keytype, scheme, and curve before verification, allowing signatures to be accepted with mismatched parameters.

Algorithm Confusion: Algorithm confusion arises when keytype and scheme are not validated against the actual AWS signing algorithm, leading to signatures generated with the wrong algorithm.