Security context

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

google/s2a-go

              main @ fe5acd2
            

Fixes

CVEs

CRITICAL

Peak severity

28.6%

Coverage

Highlights

Auth Bypass: 5 prior fixes. Scrutinize any change in this area.

internal/v2/tls_config_store/tls_config_store.go: most-fixed (4 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.

Auth Bypass: The library historically ignored verification status codes returned by S2Av2 during custom certificate validation, effectively allowing invalid, expired, or untrusted peer certificates to bypass authentication. This has been patched both in the generic cert_verifier and its Go wrapper implementation.

Auth Bypass: Failure to inspect the Status field in the S2A SessionResp envelope allowed the application to extract and proceed with uninitialized or failed TLS configurations, leading to silent authentication bypasses during handshakes.

Broken Cryptographic Algorithm: The server TLS configuration store was found to explicitly configure 'InsecureSkipVerify: true', which disables active validation of peer certificates and exposes connection channels to man-in-the-middle attacks.