Heap-based buffer overflow in bareos - CVE-2020-11061
Published: July 10, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34158
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-11061
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow. A remote attacker can use 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 to trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
bareos
claws-mail (Alpine package)
bareos (Alpine package)
claws-mail (Alpine package)
bareos (Alpine package)
How to mitigate CVE-2020-11061
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
bareos (Alpine package) - update to 19.2.8-r0