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CVE-2025-2814                                        CPAN Security Group
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         CVE ID:  CVE-2025-2814
   Distribution:  Crypt-CBC
       Versions:  from 1.21 through 3.04

       MetaCPAN:  https://metacpan.org/dist/Crypt-CBC

Crypt::CBC versions between 1.21 and 3.04 for Perl may use insecure
rand() function for cryptographic functions

Description
-----------
Crypt::CBC versions between 1.21 and 3.04 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.

Problem types
-------------
CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator
(PRNG)

References
----------
https://perldoc.perl.org/functions/rand
https://metacpan.org/dist/Crypt-CBC/source/lib/Crypt/CBC.pm#L777
https://security.metacpan.org/docs/guides/random-data-for-security.html

Credits
-------
Robert Rothenberg (RRWO), finder