==========================================================================
Ubuntu Security Notice USN-3546-1
January 24, 2018

gcab vulnerability
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 16.04 LTS

Summary:

gcab could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- gcab: Microsoft Cabinet file manipulation tool

Details:

Richard Hughes discovered that gcab incorrectly handled certain malformed
cabinet files. If a user or automated system were tricked into opening a
specially crafted cabinet file, a remote attacker could use this issue to
cause gcab to crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions:

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

Ubuntu 17.10:
  gcab                            0.7-4ubuntu0.1
  libgcab-1.0-0                   0.7-4ubuntu0.1

Ubuntu 16.04 LTS:
  gcab                            0.7-1ubuntu0.1
  libgcab-1.0-0                   0.7-1ubuntu0.1

After a standard system update you need to restart your session to make
all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3546-1
  CVE-2018-5345

Package Information:
  https://launchpad.net/ubuntu/+source/gcab/0.7-4ubuntu0.1
  https://launchpad.net/ubuntu/+source/gcab/0.7-1ubuntu0.1