Security context

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

mrniko/netty-socketio

              master @ e97fbe1
            

Fixes

CVEs

CRITICAL

Peak severity

Highlights

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

src/main/java/com/corundumstudio/socketio/handler/AuthorizeHandler.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: Failed handshakes propagated down the Netty pipeline because of a missing early return on failure. This allowed unauthorized connection requests to continue execution as if they were fully authorized.

Auth Bypass: Namespace clients were implicitly created on any incoming packet instead of requiring a strict, authenticated CONNECT packet. This permitted unauthenticated packets to register a namespace client and bypass authorization.

Auth Bypass: Blocked unauthorized requests were written to the Netty channel but never flushed. Because the write was unflushed, the socket connection remained open, allowing further communication.