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Ubuntu Security Notice USN-2726-1
August 31, 2015

expat vulnerability
============================================================================

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

- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Expat could be made to crash or run programs as your login if it opened a
specially crafted file.

Software Description:
- expat: XML parsing C library

Details:

It was discovered that Expat incorrectly handled malformed XML data. If a
user or application linked against Expat were tricked into opening a
crafted XML file, an attacker could cause 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 15.04:
  lib64expat1                     2.1.0-6ubuntu1.1
  libexpat1                       2.1.0-6ubuntu1.1

Ubuntu 14.04 LTS:
  lib64expat1                     2.1.0-4ubuntu1.1
  libexpat1                       2.1.0-4ubuntu1.1

Ubuntu 12.04 LTS:
  lib64expat1                     2.0.1-7.2ubuntu1.2
  libexpat1                       2.0.1-7.2ubuntu1.2

After a standard system upgrade you need to restart any applications linked
against Expat to effect the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2726-1
  CVE-2015-1283

Package Information:
  https://launchpad.net/ubuntu/+source/expat/2.1.0-6ubuntu1.1
  https://launchpad.net/ubuntu/+source/expat/2.1.0-4ubuntu1.1
  https://launchpad.net/ubuntu/+source/expat/2.0.1-7.2ubuntu1.2