Security context

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

ircmaxell/password_compat
master @ dfdbc46
8
Fixes
0
CVEs
HIGH
Peak severity
Highlights
Cryptographic Issues: 3 prior fixes. Scrutinize any change in this area.
lib/password.php: most-fixed (8 issues). 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.

Weak Password Hashing: Insecure handling of weak DES fallback hashes in legacy PHP versions (< 5.3.7) allowed short hashes (<= 13 characters) to produce false-positive password verifications, undermining the entire authentication mechanism.
Weak Cryptographic Algorithms: Generating password salts using pseudo-random generators without validating that the system explicitly marked the returned bytes as cryptographically strong could lead to predictable salt values.
Weak Cryptographic Algorithm: A logical flaw in the library's fallback salt generator applied XOR operations on strings rather than individual character offsets, causing the generated salt to have significantly reduced cryptographic entropy.