CVE-2020-3341 Explained : Impact and Mitigation
Learn about CVE-2020-3341, a high-severity vulnerability in ClamAV PDF parsing module allowing remote attackers to crash the scanning process. Find mitigation steps and patching advice here.
A vulnerability in the PDF archive parsing module in Clam AntiVirus (ClamAV) Software versions 0.101 - 0.102.2 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to a stack buffer overflow read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.
Understanding CVE-2020-3341
This CVE involves a vulnerability in ClamAV that could lead to a denial of service attack.
What is CVE-2020-3341?
The CVE-2020-3341 vulnerability is a stack buffer overflow read issue in Clam AntiVirus (ClamAV) Software versions 0.101 - 0.102.2, allowing remote attackers to crash the scanning process via a crafted PDF file.
The Impact of CVE-2020-3341
The vulnerability has a CVSS base score of 7.5 (High severity) with a high availability impact. It could result in a denial of service condition on affected devices.
Technical Details of CVE-2020-3341
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in ClamAV's PDF archive parsing module allows remote attackers to exploit a stack buffer overflow read, leading to a denial of service condition.
Affected Systems and Versions
- Product: ClamAV
- Vendor: Cisco
- Versions affected: 0.101 - 0.102.2
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a specially crafted PDF file to the target device, causing the ClamAV scanning process to crash.
Mitigation and Prevention
To address CVE-2020-3341, follow these mitigation strategies:
Immediate Steps to Take
- Apply the security patch released by ClamAV to fix the vulnerability.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update ClamAV software to the latest version to prevent known vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Stay informed about security advisories from ClamAV and apply patches promptly to secure your systems.