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.

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.
Published: 2024-09-04
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3983-1 clamav security update
EUVD EUVD EUVD-2024-18221 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. 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.
Ubuntu USN Ubuntu USN USN-7011-1 ClamAV vulnerabilities
Ubuntu USN Ubuntu USN USN-7011-2 ClamAV vulnerabilities
History

Mon, 03 Nov 2025 23:30:00 +0100

Type Values Removed Values Added
References

Sat, 12 Jul 2025 15:45:00 +0200

Type Values Removed Values Added
Metrics epss

{'score': 0.00028}

 epss

{'score': 0.00037}

Thu, 12 Sep 2024 19:45:00 +0200

Type Values Removed Values Added
First Time appeared Clamav
Clamav clamav
Weaknesses CWE-754
CPEs cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:1.4.0:*:*:*:*:*:*:*
Vendors & Products Clamav
Clamav clamav

Thu, 05 Sep 2024 16:30:00 +0200

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 04 Sep 2024 23:45:00 +0200

Type Values Removed Values Added
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. 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.
Title ClamAV Privilege Handling Escalation Vulnerability
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'}

Subscriptions

Clamav Clamav
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2025-11-03T21:52:31.990Z

Reserved: 2023-11-08T15:08:07.688Z

Link: CVE-2024-20506

cve-icon Vulnrichment

Updated: 2025-11-03T21:52:31.990Z

cve-icon NVD

Status : Modified

Published: 2024-09-04T22:15:04.083

Modified: 2026-06-17T07:07:27.417

Link: CVE-2024-20506

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-754

    Improper Check for Unusual or Exceptional Conditions