CVE-2022-24756
HIGHBareos 18.2-19.2.12 - Authenticated Denial of Service via PAM Authentication Memory Leak
Title source: llmDescription
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.
References (5)
Core 5
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/bareos/bareos/pull/1115
Patch, Third Party Advisory x_refsource_misc
https://github.com/bareos/bareos/pull/1119
Patch, Third Party Advisory x_refsource_misc
https://github.com/bareos/bareos/pull/1121
Exploit, Patch, Third Party Advisory x_refsource_misc
https://huntr.dev/bounties/480121f2-bc3c-427e-986e-5acffb1606c5/
Third Party Advisory x_refsource_confirm
https://github.com/bareos/bareos/security/advisories/GHSA-jh55-4wgw-xc9j
Scores
CVSS v3
7.5
EPSS
0.0191
EPSS Percentile
77.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-401
Status
published
Products (1)
bareos/bareos
18.2 - 19.2.12
Published
Mar 15, 2022
Tracked Since
Feb 18, 2026