CVE-2025-2814

MEDIUM4.0

Crypt::CBC versions between 1.21 and 3.05 for Perl may use insecure rand() function for cryptographic functions

Published Apr 12, 2025

Modified 6 months ago

Details

Crypt::CBC versions between 1.21 and 3.05 for Perl may use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

This issue affects operating systems where "/dev/urandom'" is unavailable. In that case, Crypt::CBC will fallback to use the insecure rand() function.

References

FIX

https://github.com/lstein/Lib-Crypt-CBC/commit/37111f7cd894bcec46156ba7f40a49c126ebf535.patch

WEB

https://metacpan.org/dist/Crypt-CBC/source/lib/Crypt/CBC.pm#L777

WEB

https://perldoc.perl.org/functions/rand

WEB

https://security.metacpan.org/docs/guides/random-data-for-security.html

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-2814

CVSS Analysis