firefox security update

CentOS Errata and Security Advisory CESA-2015:0718

Mozilla Firefox is an open source web browser. XULRunner provides the XUL
Runtime environment for Mozilla Firefox.

Two flaws were found in the processing of malformed web content. A web page
containing malicious content could cause Firefox to crash or, potentially,
execute arbitrary code with the privileges of the user running Firefox.
(CVE-2015-0817, CVE-2015-0818)

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges ilxu1a and Mariusz Mlynski as the original reporters
of these issues.

All Firefox users should upgrade to these updated packages, which contain
Firefox version 31.5.3 ESR, which corrects these issues. After installing
the update, Firefox must be restarted for the changes to take effect.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2015-April/083206.html
https://lists.centos.org/pipermail/centos-announce/2015-March/083156.html
https://lists.centos.org/pipermail/centos-announce/2015-March/083158.html
https://lists.centos.org/pipermail/centos-cr-announce/2015-March/028130.html

Affected packages:
firefox

Upstream details at:
https://access.redhat.com/errata/RHSA-2015:0718