CVE-2022-20796 ClamAV Truncated File Denial of Service Vulnerability Affecting Cisco Products: April 2022
A local attacker can cause a denial of service in ClamAV via a truncated file, affecting systems using the vulnerable scanning library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-20796?
CVE-2022-20796 is a medium-severity vulnerability in Clamav Clamav, published on 4 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
On May 4, 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 Clam AntiVirus (ClamAV) versions 0.103.4, 0.103.5, 0.104.1, and 0.104.2 could allow an authenticated, local attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog.
Which versions are affected by CVE-2022-20796?
It affects 4 products.
Products include Cisco Secure Endpoint, Clamav Clamav, Debian Debian Linux, Fedoraproject Fedora.
How do I fix CVE-2022-20796?
Upgrade to a fixed version.
Is CVE-2022-20796 being exploited?
There is no known exploitation of CVE-2022-20796 in the wild and no public exploit code.
Other vulnerabilities in Clamav Clamav
- CVE-2023-20032 Memory corruption in Cisco Secure Endpoint
- CVE-2022-20770 ClamAV CHM File Parsing Denial of Service Vulnerability Affecting Cisco Products: April 2022
- CVE-2026-20348 ClamAV XAR File Format Processing Memory Corruption Vulnerability
- CVE-2026-20213 ClamAV PE File Format Processing Out-of-Bounds Memory Corruption Vulnerability
- CVE-2026-20214 ClamAV FSG File Format Processing Out-of-Bounds Memory Corruption Vulnerability
Sources
Also known as ALPINE-CVE-2022-20796, AZL-9668, DEBIAN-CVE-2022-20796, GHSA-mp8h-qmxp-c39w, UBUNTU-CVE-2022-20796.