===========================================================================
Ubuntu Security Notice USN-3393-2
August 17, 2017

clamav vulnerabilities
===========================================================================

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in ClamAV.

Software Description:
- clamav: Anti-virus utility for Unix

Details:

USN-3393-1 fixed several vulnerabilities in ClamAV. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that ClamAV incorrectly handled parsing certain=C2=A0
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 12.04 ESM:
 clamav=C2=A00.99.2+addedllvm-0ubuntu0.12.04.2

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

References:
 https://www.ubuntu.com/usn/usn-3393-2
 https://www.ubuntu.com/usn/usn-3393-1
 CVE-2017-6418, CVE-2017-6419, CVE-2017-6420

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