Paper/Archive/CVE-2025-40925

CVE-2025-40925

BLUEFEET Starch — Starch versions 0.14 and earlier generate session ids insecurely

Description · from the CVE record

Starch versions 0.14 and earlier generate session ids insecurely. The default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems.

Affected

ProductAffectedFixed inSource
Starch0.01 – 0.14–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/bluefeet/Starch/pull/5patchgithub.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patchrefmetacpan.org/dist/Starch/source/lib/Starch/Manager.pm