10 - RHSA-2013:1812

Problem Description:

Updated firefox packages that fix several security issues are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

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

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to terminate unexpectedly or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2013-5609, CVE-2013-5616, CVE-2013-5618, CVE-2013-6671, CVE-2013-5613)

A flaw was found in the way Firefox rendered web content with missing character encoding information. An attacker could use this flaw to possibly bypass same-origin inheritance and perform cross-site scripting (XSS) attacks. (CVE-2013-5612)

It was found that certain malicious web content could bypass restrictions applied by sandboxed iframes. An attacker could combine this flaw with other vulnerabilities to execute arbitrary code with the privileges of the user running Firefox. (CVE-2013-5614)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Ben Turner, Bobby Holley, Jesse Ruderman, Christian Holler, Masato Kinugawa, Daniel Veditz, Jesse Schwartzentruber, Nils, Tyson Smith, and Atte Kettunen as the original reporters of these issues.

For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 24.2.0 ESR. You can find a link to the Mozilla advisories in the References section of this erratum.

All Firefox users should upgrade to these updated packages, which contain Firefox version 24.2.0 ESR, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.

4. Solution:

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1039417 - CVE-2013-5609 Mozilla: Miscellaneous memory safety hazards (rv:24.2) (MFSA 2013-104) 1039420 - CVE-2013-5612 Mozilla: Character encoding cross-origin XSS attack (MFSA 2013-106) 1039421 - CVE-2013-5614 Mozilla: Sandbox restrictions not applied to nested object elements (MFSA 2013-107) 1039422 - CVE-2013-5616 Mozilla: Use-after-free in event listeners (MFSA 2013-108) 1039423 - CVE-2013-5618 Mozilla: Use-after-free during Table Editing (MFSA 2013-109) 1039426 - CVE-2013-6671 Mozilla: Segmentation violation when replacing ordered list elements (MFSA 2013-111) 1039429 - CVE-2013-5613 Mozilla: Use-after-free in synthetic mouse movement (MFSA 2013-114)