Security context

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

irmen/pyrolite

              master @ 4c7a46b
            

Fixes

CVEs

HIGH

Peak severity

Highlights

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

NameServerProxy: most-fixed (1 issue). Treat as high-risk during review.

2 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: Non-deterministic iteration order of message annotations during HMAC calculation allows signature verification bypasses. Ensuring strict SortedMap ordering is required to maintain message authentication integrity.

Auth Bypass: Failure to propagate and configure mandatory Pyro HMAC keys within specific proxy classes like NameServerProxy leaves remote invocations vulnerable to authentication and integrity bypasses.

Cryptographic Issues: Similar to its Java counterpart, the .NET message implementation suffered from inconsistent HMAC calculation due to unsorted dictionary keys before hashing.