Security context

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

marten-seemann/qtls-go1-16

              master @ 18d00aa
            

Fixes

CVEs

MEDIUM

Peak severity

Highlights

Auth Bypass: 2 prior fixes. Scrutinize any change in this area.

crypto/tls: most-fixed (1 issue). Treat as high-risk during review.

0 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: Inconsistent ALPN validation during session resumption allowed 0-RTT early data to be accepted under mismatched application protocols, risking logical authentication bypasses.

Auth Bypass: Failure to validate whether a resumed session ticket allowed early data could lead to processing unauthorized 0-RTT payloads on the server.

Cryptographic Issues: Retaining session tickets in the client cache during 0-RTT attempts created a window for replay attacks; immediate ticket deletion upon use is required.