CVE-2022-20770

Description

On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.

How to fix CVE-2022-20770

To remediate CVE-2022-20770, 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
• —upgrade to 0.103.6+dfsg-0+deb9u1 or later

Is CVE-2022-20770 being exploited?

Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0, < 0.103.6-r0
• from 0, < 0.103.6+dfsg-0+deb11u1
• from 0, < 0.103.6+dfsg-0+deb9u1

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2022-20770
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2022-20770