Security context

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

jasig/cas

              master @ 1377619
            

Fixes

CVEs

HIGH

Peak severity

40.0%

Coverage

Highlights

Auth Bypass: 3 prior fixes. Scrutinize any change in this area.

support/cas-server-support-oauth-core-api/src/main/java/org/apereo/cas/ticket/accesstoken/OAuth20JwtBuilder.java: most-fixed (2 issues). Treat as high-risk during review.

3 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: Failing to halt validation when an OTP cannot be persisted to the token repository allows attackers to reuse or replay OTP tokens, bypassing MFA. This requires strict error handling on persistence failures.

Auth Bypass: Concurrency issues and race conditions in check-and-set operations of OTP repositories allow parallel replay attacks if locking mechanisms are missing or incorrectly implemented.

Information Disclosure: Bypassing attribute release and claim filtering policies when building JWT access tokens for unresolved subjects or failing to execute policy rules results in the exposure of sensitive user claims.