CVE-2022-20792

Description

A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated, local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.

How to fix CVE-2022-20792

To remediate CVE-2022-20792, upgrade the affected package to a fixed version below.

• —upgrade to 0.103.6-r0 or later
• —upgrade to 0.103.6+dfsg-0+deb11u1 or later

Is CVE-2022-20792 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 0.103.6-r0
• from 0, < 0.103.6+dfsg-0+deb11u1

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2022-20792
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2022-20792