CVEvulnerability

CVE-2025-40925

9.1 CRITICAL Published 2025-09-20 Modified 2026-06-17 Official page ↗
Status
Deferred
Published
2025-09-20
Last modified
2026-06-17
Assigner
9b29abf9-4ab0-4765-b253-1875cd9b441e
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-338, CWE-340

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.

Related

Weakness · CWE (2)

  • CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) weakness
  • CWE-340 Generation of Predictable Numbers or Identifiers weakness

References