CVE-2024-20506

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

04/09/2024

Last modified:

03/11/2025

Description

A vulnerability in the ClamD service module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an authenticated, local attacker to corrupt critical system files.<br /> <br /> The vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): High

Base Score 3.x

6.10

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:clamav:clamav::::::::		0.103.12 (excluding)
cpe:2.3:a:clamav:clamav::::::::	0.104.0 (including)	1.0.7 (excluding)
cpe:2.3:a:clamav:clamav::::::::	1.2.0 (including)	1.3.2 (excluding)
cpe:2.3:a:clamav:clamav:1.4.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-20506

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools