CVE-2022-24756

Public Exploit
Missing Release of Memory after Effective Lifetime in Bareos Director

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.50%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory huntr.dev
Affected: bareos bareos
Published at:
Updated at:

References

Link Tags
https://github.com/bareos/bareos/pull/1115 third party advisory patch
https://github.com/bareos/bareos/pull/1119 third party advisory patch
https://github.com/bareos/bareos/pull/1121 third party advisory patch
https://huntr.dev/bounties/480121f2-bc3c-427e-986e-5acffb1606c5/ exploit third party advisory patch
https://github.com/bareos/bareos/security/advisories/GHSA-jh55-4wgw-xc9j third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-24756?
CVE-2022-24756 has been scored as a high severity vulnerability.
How to fix CVE-2022-24756?
To fix CVE-2022-24756, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-24756 being actively exploited in the wild?
It is possible that CVE-2022-24756 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-24756?
CVE-2022-24756 affects bareos bareos.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.