CVE-2025-40925

Summary

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 Software

VendorProductVersion RangeStatus
BLUEFEETStarch0.01 <= 0.14affected

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References