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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox Use-After-Free Memory Error in SVG Animation Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1037376
SecurityTracker URL:  http://securitytracker.com/id/1037376
CVE Reference:   CVE-2016-9079   (Links to External Site)
Date:  Dec 1 2016
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 50.0.1; possibly earlier versions
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create specially crafted JavaScript that, when loaded by the target user, will trigger a use-after-free memory error in SVG Animation and execute arbitrary code on the target user's system.

This vulnerability is being actively exploited against Firefox and the Tor Browser on Windows-based systems.

Exploit code is available at:

https://lists.torproject.org/pipermail/tor-talk/2016-November/042639.html

Obscured Team reported this vulnerability.

Impact:   A remote user can create JavaScript content that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2016-2843.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2016-2843.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6, 7

Message History:   This archive entry is a follow-up to the message listed below.
Nov 30 2016 Mozilla Firefox Use-After-Free Memory Error in SVG Animation Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2016:2843-01] Critical: firefox security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2016:2843-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-2843.html
Issue date:        2016-12-01
CVE Names:         CVE-2016-9079 
=====================================================================

1. Summary:

An update for firefox is now available for Red Hat Enterprise Linux 5, Red
Hat Enterprise Linux 6, and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Critical. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ppc, s390x, x86_64
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - 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 Desktop Optional (v. 6) - 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 Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Mozilla Firefox is an open source web browser.

This update upgrades Firefox to version 45.5.1 ESR.

Security Fix(es):

* A flaw was 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-2016-9079)

Red Hat would like to thank the Mozilla project for reporting this issue.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the update, Firefox must be restarted for the changes to
take effect.

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

1400376 - CVE-2016-9079 Mozilla: Firefox SVG Animation Remote Code Execution (MFSA 2016-92)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
firefox-45.5.1-1.el5_11.src.rpm

i386:
firefox-45.5.1-1.el5_11.i386.rpm
firefox-debuginfo-45.5.1-1.el5_11.i386.rpm

x86_64:
firefox-45.5.1-1.el5_11.i386.rpm
firefox-45.5.1-1.el5_11.x86_64.rpm
firefox-debuginfo-45.5.1-1.el5_11.i386.rpm
firefox-debuginfo-45.5.1-1.el5_11.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
firefox-45.5.1-1.el5_11.src.rpm

i386:
firefox-45.5.1-1.el5_11.i386.rpm
firefox-debuginfo-45.5.1-1.el5_11.i386.rpm

ppc:
firefox-45.5.1-1.el5_11.ppc64.rpm
firefox-debuginfo-45.5.1-1.el5_11.ppc64.rpm

s390x:
firefox-45.5.1-1.el5_11.s390.rpm
firefox-45.5.1-1.el5_11.s390x.rpm
firefox-debuginfo-45.5.1-1.el5_11.s390.rpm
firefox-debuginfo-45.5.1-1.el5_11.s390x.rpm

x86_64:
firefox-45.5.1-1.el5_11.i386.rpm
firefox-45.5.1-1.el5_11.x86_64.rpm
firefox-debuginfo-45.5.1-1.el5_11.i386.rpm
firefox-debuginfo-45.5.1-1.el5_11.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
firefox-45.5.1-1.el6_8.src.rpm

i386:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm

x86_64:
firefox-45.5.1-1.el6_8.x86_64.rpm
firefox-debuginfo-45.5.1-1.el6_8.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

x86_64:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
firefox-45.5.1-1.el6_8.src.rpm

x86_64:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-45.5.1-1.el6_8.x86_64.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
firefox-45.5.1-1.el6_8.src.rpm

i386:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm

ppc64:
firefox-45.5.1-1.el6_8.ppc64.rpm
firefox-debuginfo-45.5.1-1.el6_8.ppc64.rpm

s390x:
firefox-45.5.1-1.el6_8.s390x.rpm
firefox-debuginfo-45.5.1-1.el6_8.s390x.rpm

x86_64:
firefox-45.5.1-1.el6_8.x86_64.rpm
firefox-debuginfo-45.5.1-1.el6_8.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

ppc64:
firefox-45.5.1-1.el6_8.ppc.rpm
firefox-debuginfo-45.5.1-1.el6_8.ppc.rpm

s390x:
firefox-45.5.1-1.el6_8.s390.rpm
firefox-debuginfo-45.5.1-1.el6_8.s390.rpm

x86_64:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
firefox-45.5.1-1.el6_8.src.rpm

i386:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm

x86_64:
firefox-45.5.1-1.el6_8.x86_64.rpm
firefox-debuginfo-45.5.1-1.el6_8.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

x86_64:
firefox-45.5.1-1.el6_8.i686.rpm
firefox-debuginfo-45.5.1-1.el6_8.i686.rpm

Red Hat Enterprise Linux Client (v. 7):

Source:
firefox-45.5.1-1.el7_3.src.rpm

x86_64:
firefox-45.5.1-1.el7_3.x86_64.rpm
firefox-debuginfo-45.5.1-1.el7_3.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
firefox-45.5.1-1.el7_3.i686.rpm
firefox-debuginfo-45.5.1-1.el7_3.i686.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
firefox-45.5.1-1.el7_3.src.rpm

aarch64:
firefox-45.5.1-1.el7_3.aarch64.rpm
firefox-debuginfo-45.5.1-1.el7_3.aarch64.rpm

ppc64:
firefox-45.5.1-1.el7_3.ppc64.rpm
firefox-debuginfo-45.5.1-1.el7_3.ppc64.rpm

ppc64le:
firefox-45.5.1-1.el7_3.ppc64le.rpm
firefox-debuginfo-45.5.1-1.el7_3.ppc64le.rpm

s390x:
firefox-45.5.1-1.el7_3.s390x.rpm
firefox-debuginfo-45.5.1-1.el7_3.s390x.rpm

x86_64:
firefox-45.5.1-1.el7_3.x86_64.rpm
firefox-debuginfo-45.5.1-1.el7_3.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
firefox-45.5.1-1.el7_3.ppc.rpm
firefox-debuginfo-45.5.1-1.el7_3.ppc.rpm

s390x:
firefox-45.5.1-1.el7_3.s390.rpm
firefox-debuginfo-45.5.1-1.el7_3.s390.rpm

x86_64:
firefox-45.5.1-1.el7_3.i686.rpm
firefox-debuginfo-45.5.1-1.el7_3.i686.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
firefox-45.5.1-1.el7_3.src.rpm

x86_64:
firefox-45.5.1-1.el7_3.x86_64.rpm
firefox-debuginfo-45.5.1-1.el7_3.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
firefox-45.5.1-1.el7_3.i686.rpm
firefox-debuginfo-45.5.1-1.el7_3.i686.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2016-9079
https://access.redhat.com/security/updates/classification/#critical
https://www.mozilla.org/en-US/security/advisories/mfsa2016-92/#CVE-2016-9079

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2016 Red Hat, Inc.
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