[USN-3814-1] libmspack vulnerabilities

[Alex Murray]

==========================================================================
Ubuntu Security Notice USN-3814-1
November 12, 2018

libmspack vulnerabilities
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in libmspack.

Software Description:
- libmspack: library for Microsoft compression formats

Details:

It was discovered libmspack incorrectly handled certain malformed 
CAB files.
A remote attacker could use this issue to cause libmspack to 
crash, resulting
in a denial of service. (CVE-2018-18584, CVE-2018-18585)

Update instructions:

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

Ubuntu 18.10:
  libmspack0                      0.7-1ubuntu0.1

Ubuntu 18.04 LTS:
  libmspack0                      0.6-3ubuntu0.2

Ubuntu 16.04 LTS:
  libmspack0                      0.5-1ubuntu0.16.04.3

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

References:
  https://usn.ubuntu.com/usn/usn-3814-1
  CVE-2018-18584, CVE-2018-18585

Package Information:
  https://launchpad.net/ubuntu/+source/libmspack/0.7-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/libmspack/0.6-3ubuntu0.2
  https://launchpad.net/ubuntu/+source/libmspack/0.5-1ubuntu0.16.04.3
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