CVE-2025-40933
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-17

Last updated on: 2025-09-18

Assigner: CPANSec

Description
Apache::AuthAny::Cookie v0.201 or earlier for Perl generates session ids insecurely. Session ids are generated using an MD5 hash of the epoch time and a call to the built-in rand function. 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.
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Meta Information
Published
2025-09-17
Last Modified
2025-09-18
Generated
2026-06-16
AI Q&A
2025-09-17
EPSS Evaluated
2026-06-14
NVD
CVE-2025-40933
EUVD
EUVD-2025-29729
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
apache apache2_authany 0.201
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-340 The product uses a scheme that generates numbers or identifiers that are more predictable than required.
CWE-338 The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.
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Executive Summary

This vulnerability exists in Apache::AuthAny::Cookie v0.201 or earlier for Perl, where session IDs are generated insecurely. The session IDs are created using an MD5 hash of the epoch time combined with a call to the built-in rand function. Since the epoch time can be guessed and the built-in rand function is not suitable for cryptographic purposes, the resulting session IDs are predictable.

Impact Analysis

Because the session IDs are predictable, an attacker could potentially guess or reproduce valid session IDs, allowing them to gain unauthorized access to systems that rely on these session IDs for authentication.

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