CVE-2022-24756

Name: CVE-2022-24756
Creator: NVD / NIST
Published: 2022-03-15T15:15:08.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.91%

Last modified Jun 17, 2026

CVE-2022-24756 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.91% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.91%

77.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-401

Affected Software

Vendor	Product	Versions
Bareos	Bareos	>= 18.2, < 19.2.12
Bareos	Bareos	>= 20.0.0, < 20.0.6
Bareos	Bareos	>= 21.0.0, < 21.1.0

References

https://github.com/bareos/bareos/pull/1115Patch, Third Party Advisory
https://github.com/bareos/bareos/pull/1119Patch, Third Party Advisory
https://github.com/bareos/bareos/pull/1121Patch, Third Party Advisory
https://github.com/bareos/bareos/security/advisories/GHSA-jh55-4wgw-xc9jThird Party Advisory
https://huntr.dev/bounties/480121f2-bc3c-427e-986e-5acffb1606c5/Exploit, Patch, Third Party Advisory
https://github.com/bareos/bareos/pull/1115Patch, Third Party Advisory
https://github.com/bareos/bareos/pull/1119Patch, Third Party Advisory
https://github.com/bareos/bareos/pull/1121Patch, Third Party Advisory
https://github.com/bareos/bareos/security/advisories/GHSA-jh55-4wgw-xc9jThird Party Advisory
https://huntr.dev/bounties/480121f2-bc3c-427e-986e-5acffb1606c5/Exploit, Patch, Third Party Advisory

Timeline

Published: Mar 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-24756?

How severe is CVE-2022-24756?

CVE-2022-24756 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.

How do I fix CVE-2022-24756?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-24756?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST