CVE-2022-20803

ClamAV Double-free Vulnerability in the OLE2 File Parser

Description

A vulnerability in the OLE2 file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device.The vulnerability is due to incorrect use of the realloc function that may result in a double-free. An attacker could exploit this vulnerability by submitting a crafted OLE2 file to be scanned by ClamAV on the affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.17%
Vendor Advisory clamav.net Vendor Advisory gentoo.org
Affected: Cisco ClamAV
Published at:
Updated at:

References

Link Tags
https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html release notes vendor advisory
https://security.gentoo.org/glsa/202310-01 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-20803?
CVE-2022-20803 has been scored as a high severity vulnerability.
How to fix CVE-2022-20803?
To fix CVE-2022-20803, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-20803 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-20803 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-20803?
CVE-2022-20803 affects Cisco ClamAV.
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