CVE-2020-3327: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 5.1% chance of exploitation in the next 30 days.

A vulnerability in the ARJ archive parsing module in Clam AntiVirus (ClamAV) Software versions 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 heap buffer overflow read. An attacker could exploit this vulnerability by sending a crafted ARJ 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.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 19.10 only; version 20.04 only
• Cisco Clam Antivirus: up to and including 0.102.2
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Fedoraproject Fedora: version 30 only; version 31 only; version 32 only

Published 2020-05-13. Last modified 2026-06-17.