TI-2022-08570 Aliases CVE-2022-24756

Missing Release of Memory after Effective Lifetime in Bareos Director

HIGH 72CWE-401Published 2022-03-15 · Updated 2025-04-22

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-401.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01927 80th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed bareos (bareos): 19.2.12, 20.0.6, 21.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
bareos	bareos	18.2 to before 19.2.12; 20.0.0 to before 20.0.6; 21.0.0 to before 21.1.0	19.2.12, 20.0.6, 21.1.0	Patch available	CNA

bareos Vendorbareos Affected 18.2 to before 19.2.12; 20.0.0 to before 20.0.6; 21.0.0 to before 21.1.0 Fixed in 19.2.12, 20.0.6, 21.1.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:bareos:bareos::::::::	18.2 to before 19.2.12; 20.0.0 to before 20.0.6; 21.0.0 to before 21.1.0	Vulnerable	bareos

cpe:2.3:a:bareos:bareos:*:*:*:*:*:*:*:* Versions 18.2 to before 19.2.12; 20.0.0 to before 20.0.6; 21.0.0 to before 21.1.0 Vulnerable ·bareos

Remediation

Fix · CNA bareos (bareos) Fixed in 19.2.12, 20.0.6, 21.1.0

Timeline

2026-10-02 Threatist record created from CVE-2022-24756

References

Exploit 1

https://huntr.dev/bounties/480121f2-bc3c-427e-986e-5acffb1606c5/

Patch 3

Advisory 1

https://github.com/bareos/bareos/security/advisories/GHSA-jh55-4wgw-xc9j

TI-2022-08569 Incorrect Authorization in Bareos Director CVSS 3.1CRITICAL 9.8
TI-2020-08935 Heap-based Buffer Overflow in Bareos Director CVSS 3.1HIGH 7.4
TI-2017-10707 bareos-dir, bareos-fd, and bareos-sd in bareos-core in Bareos 16.2.6 and earlier create a… CVSS 3.0HIGH 7.8
TI-2020-03531 Authentication bypass in Bareos CVSS 3.1MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences