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CVE-2022-20803

Published: 17 February 2023

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.

Notes

AuthorNote
mdeslaur
per upstream, only affects 0.104.0 to 0.104.2

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
clamav
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Not vulnerable

impish Not vulnerable

jammy Not vulnerable

upstream
Released (0.103.6,0.104.3,0.105.0)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H