CVE-2025-40925

CRITICAL

9.1

Description

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.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/20/2025

Last Modified9/22/2025

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-338CWE-340

References

https://github.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patch(9b29abf9-4ab0-4765-b253-1875cd9b441e)

https://github.com/bluefeet/Starch/pull/5(9b29abf9-4ab0-4765-b253-1875cd9b441e)

https://metacpan.org/dist/Starch/source/lib/Starch/Manager.pm(9b29abf9-4ab0-4765-b253-1875cd9b441e)

IOC Correlations

No correlations recorded

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