======================================================================== CVE-2025-40931 CPAN Security Group ========================================================================
CVE ID: CVE-2025-40931 Distribution: Apache-Session Versions: through 1.94 MetaCPAN: https://metacpan.org/dist/Apache-Session VCS Repo: https://github.com/chorny/Apache-Session Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id Description ----------- Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id. Apache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand() function, the epoch time, and the PID. 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. Problem types ------------- - CWE-340 Generation of Predictable Numbers or Identifiers - CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator Solutions --------- Consider alternate solutions like https://metacpan.org/pod/Apache::Session::Generate::Random References ---------- https://metacpan.org/dist/Apache-Session/source/lib/Apache/Session/Generate/MD5.pm#L27 https://security.metacpan.org/docs/guides/random-data-for-security.html Credits ------- Robert Rothenberg, finder
