[USN-4132-1] Expat vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-4132-1
September 12, 2019

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

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Expat could be made to expose sensitive information if it received a
specially crafted XML file.

Software Description:
- expat: XML parsing C library

Details:

It was discovered that Expat incorrectly handled certain XML files.
An attacker could possibly use this issue to expose sensitive information.

Update instructions:

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

Ubuntu 19.04:
  libexpat1                       2.2.6-1ubuntu0.19.5

Ubuntu 18.04 LTS:
  libexpat1                       2.2.5-3ubuntu0.2

Ubuntu 16.04 LTS:
  lib64expat1                     2.1.0-7ubuntu0.16.04.5
  libexpat1                       2.1.0-7ubuntu0.16.04.5

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

References:
  https://usn.ubuntu.com/4132-1
  CVE-2019-15903

Package Information:
  https://launchpad.net/ubuntu/+source/expat/2.2.6-1ubuntu0.19.5
  https://launchpad.net/ubuntu/+source/expat/2.2.5-3ubuntu0.2
  https://launchpad.net/ubuntu/+source/expat/2.1.0-7ubuntu0.16.04.5
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