CVE-2022-20796

ClamAV Truncated File Denial of Service Vulnerability Affecting Cisco Products: April 2022

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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.

El 4 de mayo de 2022, fue divulgada la siguiente vulnerabilidad en ClamAV scanning library versiones 0.103.5 y anteriores y 0.104.2 y anteriores: Una vulnerabilidad en versiones 0.103.4, 0.103.5, 0.104.1 y 0.104.2 de Clam AntiVirus (ClamAV) podría permitir a un atacante local autenticado causar una condición de denegación de servicio en un dispositivo afectado. Para una descripción de esta vulnerabilidad, vea el blog de ClamAV

Michał Dardas discovered that ClamAV incorrectly handled parsing CHM files. A remote attacker could possibly use this issue to cause ClamAV to stop responding, resulting in a denial of service. Michał Dardas discovered that ClamAV incorrectly handled parsing TIFF files. A remote attacker could possibly use this issue to cause ClamAV to stop responding, resulting in a denial of service. Michał Dardas discovered that ClamAV incorrectly handled parsing HTML files. A remote attacker could possibly use this issue to cause ClamAV to consume resources, resulting in a denial of service.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2021-11-02 CVE Reserved
2022-05-04 CVE Published
2024-11-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference
CWE-822: Untrusted Pointer Dereference

CAPEC

References (6)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2022/06/msg00004.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7RV6BLIATIJE74SQ6NG5ZC4JK5MMDQ2R	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BX5ZXNHP4NFYQ5BFSKY3WT7NTBZUYG7L	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4NNBIJVG6Z4PDIKUZXTYXICYUAYAZ56	2023-11-07
https://security.gentoo.org/glsa/202310-01	2023-11-07
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-dos-vL9x58p4	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Clamav Search vendor "Clamav"		Clamav Search vendor "Clamav" for product "Clamav"				0.103.4 Search vendor "Clamav" for product "Clamav" and version "0.103.4"		-		Affected
Clamav Search vendor "Clamav"		Clamav Search vendor "Clamav" for product "Clamav"				0.103.5 Search vendor "Clamav" for product "Clamav" and version "0.103.5"		-		Affected
Clamav Search vendor "Clamav"		Clamav Search vendor "Clamav" for product "Clamav"				0.104.1 Search vendor "Clamav" for product "Clamav" and version "0.104.1"		-		Affected
Clamav Search vendor "Clamav"		Clamav Search vendor "Clamav" for product "Clamav"				0.104.2 Search vendor "Clamav" for product "Clamav" and version "0.104.2"		-		Affected
Cisco Search vendor "Cisco"		Secure Endpoint Search vendor "Cisco" for product "Secure Endpoint"				< 1.16.3 Search vendor "Cisco" for product "Secure Endpoint" and version " < 1.16.3"		macos		Affected
Cisco Search vendor "Cisco"		Secure Endpoint Search vendor "Cisco" for product "Secure Endpoint"				< 1.17.2 Search vendor "Cisco" for product "Secure Endpoint" and version " < 1.17.2"		linux		Affected
Cisco Search vendor "Cisco"		Secure Endpoint Search vendor "Cisco" for product "Secure Endpoint"				< 7.5.5 Search vendor "Cisco" for product "Secure Endpoint" and version " < 7.5.5"		windows		Affected
Cisco Search vendor "Cisco"		Secure Endpoint Search vendor "Cisco" for product "Secure Endpoint"				>= 1.18.0 < 1.18.2 Search vendor "Cisco" for product "Secure Endpoint" and version " >= 1.18.0 < 1.18.2"		linux		Affected
Cisco Search vendor "Cisco"		Secure Endpoint Search vendor "Cisco" for product "Secure Endpoint"				>= 1.18.0 < 1.18.2 Search vendor "Cisco" for product "Secure Endpoint" and version " >= 1.18.0 < 1.18.2"		macos		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected