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CVE-2024-20506

Sept. 12, 2024, 5:26 p.m.

CVSS Score

6.1 / 10

Products Impacted

Vendor Product Versions
clamav
  • clamav
  • *, 1.4.0

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.

Weaknesses

CWE-754
Improper Check for Unusual or Exceptional Conditions

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

CWE ID: 754

Date

Published: Sept. 4, 2024, 10:15 p.m.

Last Modified: Sept. 12, 2024, 5:26 p.m.

Status : Analyzed

CVE has had analysis completed and all data associations made.

More info

Source

ykramarz@cisco.com

CPEs

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a clamav clamav / / / / / / / /
a clamav clamav / / / / / / / /
a clamav clamav / / / / / / / /
a clamav clamav 1.4.0 / / / / / / /

CVSS Data

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

Base Score
6.1
Exploitability Score
1.8
Impact Score
4.2
Base Severity
MEDIUM
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

References

https://blog.clamav.net/ ykramarz@cisco.com