/ 
Apache-Session-1.94
River stage two • 34 direct dependents • 52 total dependents
/ Apache::Session::Lock::Null
Security Advisories (1)
CVE-2025-40931 (2026-03-05)

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.

NAME

Apache::Session::Lock::Null - Does not actually provides mutual exclusion

SYNOPSIS

use Apache::Session::Lock::Null;

my $locker = Apache::Session::Lock::Null->new;

$locker->acquire_read_lock($ref);
$locker->acquire_write_lock($ref);
$locker->release_read_lock($ref);
$locker->release_write_lock($ref);
$locker->release_all_locks($ref);

DESCRIPTION

Apache::Session::Lock::Null fulfills the locking interface of Apache::Session, without actually doing any work. This is the module to use if you want maximum performance and don't actually need locking.

AUTHOR

This module was written by Jeffrey William Baker <jwbaker@acm.org>.

SEE ALSO

Apache::Session