Vulnerability Details : CVE-2022-20796
On May 4, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in Clam AntiVirus (ClamAV) versions 0.103.4, 0.103.5, 0.104.1, and 0.104.2 could allow an authenticated, local attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2022-20796
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2022-20796
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
|
6.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
2.0
|
4.0
|
Cisco Systems, Inc. |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2022-20796
-
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
-
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
-
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2022-20796
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-dos-vL9x58p4
ClamAV Truncated File Denial of Service Vulnerability Affecting Cisco Products: April 2022Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7RV6BLIATIJE74SQ6NG5ZC4JK5MMDQ2R/
[SECURITY] Fedora 36 Update: clamav-0.103.6-1.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202310-01
ClamAV: Multiple Vulnerabilities (GLSA 202310-01) — Gentoo security
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N4NNBIJVG6Z4PDIKUZXTYXICYUAYAZ56/
[SECURITY] Fedora 35 Update: clamav-0.103.6-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/06/msg00004.html
[SECURITY] [DLA 3042-1] clamav security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BX5ZXNHP4NFYQ5BFSKY3WT7NTBZUYG7L/
[SECURITY] Fedora 34 Update: clamav-0.103.6-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
Products affected by CVE-2022-20796
- cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:*
- cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:*
- cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:*
- cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:*
- cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:a:clamav:clamav:0.103.4:*:*:*:*:*:*:*
- cpe:2.3:a:clamav:clamav:0.103.5:*:*:*:*:*:*:*
- cpe:2.3:a:clamav:clamav:0.104.1:*:*:*:*:*:*:*
- cpe:2.3:a:clamav:clamav:0.104.2:*:*:*:*:*:*:*