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
Product status
Any version
References
www.openwall.com/lists/oss-security/2026/03/05/3
metacpan.org/...on/source/lib/Apache/Session/Generate/MD5.pm
security.metacpan.org/...uides/random-data-for-security.html
github.com/chorny/Apache-Session/issues/4
rt.cpan.org/Ticket/Display.html?id=173631