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CVE-2024-20506— ClamAV Privilege Handling Escalation Vulnerability

Quick assessment

Affected
Cisco ClamAV
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ClamAV（Clam AntiVirus）是ClamAV团队的一套免费且开源的杀毒软件。该软件用于检测木马、病毒、恶意软件和其他恶意威胁。 ClamAV存在安全漏洞，该漏洞源于允许ClamD进程在特权下写入其日志文件，而不检查日志文件是否已被符号链接替换。以下版本受到影响：1.4.0版本、1.3.2版本及之前版本、1.2.x版本、1.0.6版本及之前版本、0.105.x版本、0.104.x版本和0.103.11版本及之前版本。

CVSS 6.1 · Medium EPSS 0.32% · P22
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I. Basic Information for CVE-2024-20506

Vulnerability Information
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Vulnerability Title
ClamAV Privilege Handling Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ClamAV 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ClamAV（Clam AntiVirus）是ClamAV团队的一套免费且开源的杀毒软件。该软件用于检测木马、病毒、恶意软件和其他恶意威胁。 ClamAV存在安全漏洞，该漏洞源于允许ClamD进程在特权下写入其日志文件，而不检查日志文件是否已被符号链接替换。以下版本受到影响：1.4.0版本、1.3.2版本及之前版本、1.2.x版本、1.0.6版本及之前版本、0.105.x版本、0.104.x版本和0.103.11版本及之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco ClamAV 1.4.0 -

II. Public POCs for CVE-2024-20506

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III. Intelligence Information for CVE-2024-20506

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Same Patch Batch · Cisco · 2024-09-04 · 7 CVEs total

CVE-2024-20439 9.8 CRITICAL Cisco Smart Licensing Utility 安全漏洞
CVE-2024-20440 7.5 HIGH Cisco Smart Licensing Utility 安全漏洞
CVE-2024-20469 6.0 MEDIUM Cisco Identity Services Engine Command Injection Vulnerability
CVE-2024-20503 5.5 MEDIUM Cisco Duo Epic for Hyperdrive Information Disclosure Vulnerability
CVE-2024-20497 4.3 MEDIUM Cisco Expressway Edge Improper Authorization Vulnerability
CVE-2024-20505 4.0 MEDIUM ClamAV Memory Handling DoS

IV. Related Vulnerabilities

Same product: ClamAV
Same vendor: Cisco

V. Comments for CVE-2024-20506

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