Security context

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

rust-lang/cargo

              master @ a4277b2
            

Fixes

CVEs

CRITICAL

Peak severity

51.5%

Coverage

Highlights

Denial of Service: 16 prior fixes. Scrutinize any change in this area.

src/cargo/sources/registry/mod.rs: most-fixed (6 issues). Treat as high-risk during review.

7 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.

Path Traversal: Unpacking registry tarball entries without strictly comparing the target directory prefix or handling symbolic links properly allows malicious packages to overwrite files outside the intended destination directory.

Authentication Bypass: Failing to perform strict cryptographic validation of SSH host keys against a trusted known_hosts file allows Man-in-the-Middle (MITM) attacks when downloading indexes and dependencies over SSH.

Denial of Service: Unpacking registry crate tarballs without enforcing hard limits on compression ratios or maximum total unpacked size makes Cargo vulnerable to decompression-bomb (zip bomb) resource exhaustion.