USN-3393-1: ClamAV vulnerabilities

17 August 2017

clamav vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in ClamAV.

Software Description

  • clamav - Anti-virus utility for Unix

Details

It was discovered that ClamAV incorrectly handled parsing certain e-mail messages. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2017-6418)

It was discovered that ClamAV incorrectly handled certain malformed CHM files. A remote attacker could use this issue to cause ClamAV to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. In the default installation, attackers would be isolated by the ClamAV AppArmor profile. (CVE-2017-6419)

It was discovered that ClamAV incorrectly handled parsing certain PE files with WWPack compression. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2017-6420)

Update instructions

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

Ubuntu 17.04
clamav - 0.99.2+dfsg-6ubuntu0.1
Ubuntu 16.04 LTS
clamav - 0.99.2+dfsg-0ubuntu0.16.04.2
Ubuntu 14.04 LTS
clamav - 0.99.2+addedllvm-0ubuntu0.14.04.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References