Security context

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

intersectmbo/cardano-node

              master @ 4fa3e6c
            

Fixes

CVEs

HIGH

Peak severity

50.0%

Coverage

Highlights

Denial of Service: 3 prior fixes. Scrutinize any change in this area.

cardano-api: most-fixed (4 issues). Treat as high-risk during review.

4 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: Validation bypass during leader credential loading allowed loading KES keys that did not match the corresponding operational certificate, compromising the integrity of block production.

Integer Overflow: Absence of proper bounds validation during transaction construction (Shelley transaction body creation and ExUnits manual deserialization) could lead to integer overflows under Word64 constraints.

Cryptographic Issues: Flawed signature generation in Byron bootstrap configurations constructed signatures with inappropriate prefix bytes, invalidating raw transaction signs.