CVE-2022-20698 Clam AntiVirus (ClamAV) Denial of Service Vulnerability

High 7.5 Published 14 Jan 2022 Updated 6 Nov 2024

Remote attackers can crash the ClamAV scanning process by sending a crafted OOXML file, causing a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-20698?

CVE-2022-20698 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 14 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the OOXML parsing module in Clam AntiVirus (ClamAV) Software version 0.104.1 and LTS version 0.103.4 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper checks that may result in an invalid pointer read. An attacker could exploit this vulnerability by sending a crafted OOXML file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

Weakness: CWE-125, CWE-20

Which versions are affected by CVE-2022-20698?

It affects 3 products.

Linux distribution packages (39)

`clamav` SUSE:Enterprise Storage 6	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Enterprise Storage 7	All versions	`0.103.5-3.35.1`
`clamav` SUSE:HPE Helion OpenStack 8	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise High Performance Computing 15-ESPOS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise High Performance Computing 15-LTSS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Module for Basesystem 15 SP3	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Point of Sale 11 SP3	All versions	`0.103.5-0.20.44.1`
`clamav` SUSE:Linux Enterprise Real Time 15 SP2	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server 11 SP4-LTSS	All versions	`0.103.5-0.20.44.1`
`clamav-openssl1` SUSE:Linux Enterprise Server 11-SECURITY	All versions	`0.103.5-0.20.44.1`
`clamav` SUSE:Linux Enterprise Server 12 SP2-BCL	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise Server 12 SP3-BCL	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise Server 12 SP3-LTSS	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise Server 12 SP4-LTSS	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise Server 12 SP5	All versions	`0.103.5-3.15.1`
`clamav` SUSE:Linux Enterprise Server 15 SP1-BCL	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server 15 SP1-LTSS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server 15 SP2-BCL	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server 15 SP2-LTSS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server 15-LTSS	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`0.103.5-33.44.1`
`clamav` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`0.103.5-3.15.1`
`clamav` SUSE:Linux Enterprise Server for SAP Applications 15	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server for SAP Applications 15 SP1	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Linux Enterprise Server for SAP Applications 15 SP2	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Manager Proxy 4.1	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Manager Retail Branch Server 4.1	All versions	`0.103.5-3.35.1`
`clamav` SUSE:Manager Server 4.1	All versions	`0.103.5-3.35.1`
`clamav` SUSE:OpenStack Cloud 8	All versions	`0.103.5-33.44.1`
`clamav` SUSE:OpenStack Cloud 9	All versions	`0.103.5-33.44.1`
`clamav` SUSE:OpenStack Cloud Crowbar 8	All versions	`0.103.5-33.44.1`
`clamav` SUSE:OpenStack Cloud Crowbar 9	All versions	`0.103.5-33.44.1`
`clamav` openSUSE:Leap 15.3	All versions	`0.103.5-3.35.1`
`clamav` openSUSE:Tumbleweed	All versions	`0.103.5-1.1`

Products include Canonical Ubuntu Linux, Clamav Clamav, Debian Debian Linux.

How do I fix CVE-2022-20698?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-20698 being exploited?

There is no known exploitation of CVE-2022-20698 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2022-20698, AZL-7532, CLEANSTART-2026-XS23494, DEBIAN-CVE-2022-20698, GHSA-q493-fq52-3qhm, MGASA-2022-0024 and 10 more.