CVE-2013-2020: Canonical Ubuntu Linux

Medium severity, CVSS 5.0. EPSS: 3.5% chance of exploitation in the next 30 days.

Integer underflow in the cli_scanpe function in pe.c in ClamAV before 0.97.8 allows remote attackers to cause a denial of service (crash) via a skewed offset larger than the size of the PE section in a UPX packed executable, which triggers an out-of-bounds read.

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 11.10 only; version 12.04 only; version 12.10 only; version 13.04 only
• Clamav Clamav: up to and including 0.97.7; version 0.9 only; version 0.90 only; version 0.90.1 only; version 0.90.1_p0 only; version 0.90.2 only; …
• Suse Linux Enterprise Server: version 11.0 only

Published 2013-05-13. Last modified 2026-06-16.