CVE-2025-15604

Published: Mar 28, 2026 Last Modified: Mar 28, 2026
ExploitDB:
Other exploit source:
Google Dorks:

Description

AI Translation Available

Amon2 versions before 6.17 for Perl use an insecure random_string implementation for security functions.

In versions 6.06 through 6.16, the random_string function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes by concatenating a SHA-1 hash seeded with the built-in rand() function, the PID, and the high resolution epoch time. 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.

Before version 6.06, there was no fallback when /dev/urandom was not available.

Before version 6.04, the random_string function used the built-in rand() function to generate a mixed-case alphanumeric string.

This function may be used for generating session ids, generating secrets for signing or encrypting cookie session data and generating tokens used for Cross Site Request Forgery (CSRF) protection.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0002
Percentile
0,0th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Draft
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
340

Generation of Predictable Numbers or Identifiers

Incomplete
Common Consequences
Security Scopes Affected:
Other
Potential Impacts:
Varies By Context
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/tokuhirom/Amon/pull/135
https://metacpan.org/release/TOKUHIROM/Amon2-6.17/changes
https://metacpan.org/release/TOKUHIROM/Amon2-6.17/diff/TOKUHIROM/Amon2-6.16#lib…
https://security.metacpan.org/docs/guides/random-data-for-security.html
http://www.openwall.com/lists/oss-security/2026/03/28/4