Improper Check for Unusual or Exceptional Conditions Affecting clamav package, versions <0.103.12+dfsg-0ubuntu0.18.04.1+esm1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-UBUNTU1804-CLAMAV-7918996
  • published18 Sept 2024
  • disclosed4 Sept 2024

Introduced: 4 Sep 2024

CVE-2024-20506  (opens in a new tab)
CWE-754  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 clamav to version 0.103.12+dfsg-0ubuntu0.18.04.1+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream clamav package and not the clamav package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1