CVE-2024-20506
Last modified
CVE-2024-20506 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Clamav | Clamav | < 0.103.12 |
| Clamav | Clamav | >= 0.104.0, < 1.0.7 |
| Clamav | Clamav | >= 1.2.0, < 1.3.2 |
| Clamav | Clamav | 1.4.0 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2024-20506?
How severe is CVE-2024-20506?
How do I fix CVE-2024-20506?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2024
- CVE-2024-20500A vulnerability in the Cisco AnyConnect VPN server of Cisco …7.5
- CVE-2024-20501Multiple vulnerabilities in the Cisco AnyConnect VPN server …7.5
- CVE-2024-20502A vulnerability in the Cisco AnyConnect VPN server of Cisco …7.5
- CVE-2024-20503A vulnerability in Cisco Duo Epic for Hyperdrive could allow…5.5
- CVE-2024-20504A vulnerability in the web-based management interface of Cis…5.4
- CVE-2024-20505A vulnerability in the PDF parsing module of Clam AntiVirus …7.5
- CVE-2024-20507A vulnerability in the logging subsystem of Cisco Meeting Ma…6.5
- CVE-2024-20508A vulnerability in Cisco Unified Threat Defense (UTD) Snort …6.5
- CVE-2024-20509A vulnerability in the Cisco AnyConnect VPN server of Cisco …5.9
- CVE-2024-2051 CWE-307: Improper Restriction of Excessive Authentication A…9.8
- CVE-2024-20510A vulnerability in the Central Web Authentication (CWA) feat…9.3
- CVE-2024-20511A vulnerability in the web-based management interface of Cis…6.1
Are you affected by CVE-2024-20506?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST