Vulnerability · Published Feb 17, 2023 · Assigned by cisco
CVE-2022-20803ClamAV Double-free Vulnerability in the OLE2 File Parser
High 8.6
In plain English
A high-severity double free in ClamAV from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-415 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
References
- https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html vendor-advisory
- GLSA-202310-01 vendor-advisory