CVE-2022-24756

Bareos is open source software for backup, archiving, and recovery of data
for operating systems. When Bareos Director >= 18.2 but prior to 21.1.0,
20.0.6, and 19.2.12 is built and configured for PAM authentication, a
failed PAM authentication will leak a small amount of memory. An attacker
that is able to use the PAM Console (i.e. by knowing the shared secret or
via the WebUI) can flood the Director with failing login attempts which
will eventually lead to an out-of-memory condition in which the Director
will not work anymore. Bareos Director versions 21.1.0, 20.0.6 and 19.2.12
contain a Bugfix for this problem. Users who are unable to upgrade may
disable PAM authentication as a workaround.