Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
crypto-browserify/browserify-sign
main @ 3425738
6
Fixes
1
CVEs
HIGH
Peak severity
50.0%
Coverage
Highlights
Cryptographic Issues: 2 prior fixes. Scrutinize any change in this area.
verify.js: most-fixed (3 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.
Signature Bypass: Incomplete or incorrect parsing of RSA PKCS#1 v1.5 padding structures and algorithm identifiers can lead to complete signature verification bypasses. Attackers can exploit lax padding validation to craft forged signatures that are accepted as valid.
Auth Bypass: Failing to enforce mathematical boundaries, such as checking DSA signature values against the subgroup order 'q', directly allows signature forgery (CVE-2023-46234). Proper range checks on algebraic components are critical for asymmetric algorithms.
Signature Malleability: Type confusion between different key families (e.g., RSA vs. ECDSA vs. DSA) allows attackers to trick verify operations into using inappropriate validation logic. Enforcing strict matching between the declared algorithm and the key type is vital.