Vulnerability Details : CVE-2022-20803
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2022-20803
- cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-20803
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-20803
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
Cisco Systems, Inc. |
CWE ids for CVE-2022-20803
-
The product calls free() twice on the same memory address.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2022-20803
-
https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html
ClamAV® blog: ClamAV 0.105.0, 0.104.3, 0.103.6 releasedRelease Notes
-
https://security.gentoo.org/glsa/202310-01
ClamAV: Multiple Vulnerabilities (GLSA 202310-01) — Gentoo security
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