CVE-2025-40931 | 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 cryptograp
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.
Note that the libapache-session-perl package in some Debian-based Linux distributions may be patched to use Crypt::URandom.
- 🔗 metacpan.org/dist/Apache-Session/source/lib/Apache/Ses…
- 🔗 security.metacpan.org/docs/guides/random-data-for-security.html
- 🔗 github.com/chorny/Apache-Session/issues/4
- 🔗 rt.cpan.org/Ticket/Display.html
- 🔗 www.openwall.com/lists/oss-security/2019/06/15/1
- 🔗 bugs.debian.org/cgi-bin/bugreport.cgi
- 🔗 salsa.debian.org/perl-team/modules/packages/libapache-sess…
- 🔗 gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/work_items/16…
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CVE-2025-40931 | 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 cryptograp
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()
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