CVE-2020-11061: Heap-based Buffer Overflow in Bareos Director

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-10 · updated 2026-06-17
Weakness: CWE-122

Description

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Affected products

bareos: through 16.2.10; from 17.2.4 through 17.2.9; from 18.2.5 through 18.2.8; from 18.4.1 through 19.2.7; 18.2.4-rc1, 18.2.4-rc2
Debian Linux: 9.0

References

https://bugs.bareos.org/view.php?id=1210
https://github.com/bareos/bareos/security/advisories/GHSA-mm45-cg35-54j4
https://lists.debian.org/debian-lts-announce/2020/08/msg00051.html
https://bugs.bareos.org/view.php?id=1210
https://github.com/bareos/bareos/security/advisories/GHSA-mm45-cg35-54j4
https://lists.debian.org/debian-lts-announce/2020/08/msg00051.html

Get alerted when CVE-2020-11061 or the next vulnerability affects your stack