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[USN-3393-2] ClamAV vulnerabilities

Posted on 17 August 2017
Ubuntu Security

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

clamav vulnerabilities
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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:

=C2=A0It was discovered that ClamAV incorrectly handled parsing certain=C2=
=A0
=C2=A0e- mail messages. A remote attacker could possibly use this issue to
=C2=A0cause ClamAV to crash, resulting in a denial of service.=C2=A0
=C2=A0(CVE-2017-6418)
=C2=A0
=C2=A0It was discovered that ClamAV incorrectly handled certain malformed
=C2=A0CHM files. A remote attacker could use this issue to cause ClamAV to
=C2=A0crash, resulting in a denial of service, or possibly execute arbitrar=
y
=C2=A0code. This issue only affected Ubuntu 14.04 LTS. In the default
=C2=A0installation, attackers would be isolated by the ClamAV AppArmor
=C2=A0profile. (CVE-2017-6419)
=C2=A0
=C2=A0It was discovered that ClamAV incorrectly handled parsing certain PE
=C2=A0files with WWPack compression. A remote attacker could possibly use
=C2=A0this issue to cause ClamAV to crash, resulting in a denial of service=
.
=C2=A0(CVE-2017-6420)

Update instructions:

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

Ubuntu 12.04 ESM:
=C2=A0 clamav=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A00.99.2+addedllvm-0ubuntu0.12.04.2

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

References:
=C2=A0 https://www.ubuntu.com/usn/usn-3393-2
=C2=A0 https://www.ubuntu.com/usn/usn-3393-1
=C2=A0 CVE-2017-6418, CVE-2017-6419, CVE-2017-6420

 

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