Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
aws/s2n-quic
main @ 33921bd
15
Fixes
1
CVEs
HIGH
Peak severity
50.0%
Coverage
Highlights
Auth Bypass: 7 prior fixes. Scrutinize any change in this area.
quic/s2n-quic-transport/src/space/session_context.rs: most-fixed (3 issues). Treat as high-risk during review.
6 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: The handshake verification phase is susceptible to tampering if connection identifiers, such as original destination, initial source, or retry source connection IDs, are not validated in a constant-time, strict manner against expected parameters. Missing or non-constant-time checks allow attackers to hijack or spoof connections.
Cryptographic Issues: Failure to enforce active key rotation when approaching AEAD limits (packet counts) or processing unprotected packets without strict decryption validation limits threatens the overall confidentiality and integrity of the encrypted transport.
Side-channel Attack: Compiler optimizations and inlining of SSE/AVX vector comparison routines can bypass intended constant-time properties, introducing timing side channels during authentication tag validation.