USN-4066-2: ClamAV vulnerability

22 July 2019

clamav vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 ESM
  • Ubuntu 12.04 ESM


ClamAV could be made to expose sensitive information if it received a specially crafted CHM file.

Software Description

  • clamav - Anti-virus utility for Unix


USN-4066-1 fixed a vulnerability in libmspack. This update provides the corresponding update for ClamAV in Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that ClamAV incorrectly handled certain CHM files. A remote attacker could possibly use this issue to access sensitive information.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 ESM
clamav - 0.100.3+dfsg-0ubuntu0.14.04.1+esm1
Ubuntu 12.04 ESM
clamav - 0.100.3+dfsg-1ubuntu0.12.04.2

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.