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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox Multiple Flaws Let Remote Users Execute Arbitrary Code, Spoof the Address Bar, Bypass Security Restrictions, and Deny Service
SecurityTracker Alert ID:  1034826
SecurityTracker URL:  http://securitytracker.com/id/1034826
CVE Reference:   CVE-2016-1930, CVE-2016-1935   (Links to External Site)
Date:  Jan 27 2016
Impact:   Denial of service via network, Execution of arbitrary code via network, Modification of system information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 44.0
Description:   Multiple vulnerabilities were reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can cause denial of service conditions on the target system. A remote user can bypass security controls on the target system. A remote user can spoof URLs.

A remote user can create specially crafted content that, when loaded by the target user, will execute arbitrary code on the target user's system [CVE-2016-1930, CVE-2016-1931].

A remote user can create a specially crafted GIF file that, when loaded by the target user, will trigger an integer overflow [CVE-2016-1933].

A remote user can trigger a buffer overflow in BufferSubData() in the rendering of WebGL content [CVE-2016-1935].

A remote user can create a specially crafted cookie name or value containing illegal control characters (per RFC6265). This may result in errors in cookie processing that could have a security impact [CVE-2016-1939].

A remote user can set a vertical tab character in a cookie which may result in cookie injection on some servers [CVE-2015-7208].

A remote user can spoof the address bar [CVE-2016-1940]. Firefox for Android is affected.

When the protocol handler dialog appears, double click events are treated as two single click events, which may cause unintentional user initiated actions [CVE-2016-1937].

The Network Security Services (NSS) mp_div() and mp_exptmod() functions may create incorrect calculations in certain cases, which may cause cryptographic weaknesses [CVE-2016-1938].

The timing between the download 'open file' dialog obtaining focus and the button being enabled was short, allowing clickjacking attacks [CVE-2016-1941].

A remote user can spoof the address bar [CVE-2016-1943]. Firefox for Android is affected.

A remote user can spoof the location bar [CVE-2016-1942].

A remote user can trigger an error in Buffer11::NativeBuffer11::map() [CVE-2016-1944].

A remote user can trigger an error in nsZipArchive() [CVE-2016-1945].

A remote user can trigger an error in MoofParser::Metadata() [CVE-2016-1946].

The browser may be unable to access the Application Reputation service [CVE-2016-1947].

Lightweight themes may be installed over a non-secure connection. A remote user that can conduct a man-in-the-middle attack can modify theme content (e.g., images, toolbar text colors) [CVE-2016-1948]. Firefox for Android is affected.

Bob Clary, Christian Holler, Nils Ohlmeier, Gary Kwong, Jesse Ruderman, Carsten Book, Randell Jesup, Nicolas Pierron, Eric Rescorla, Tyson Smith, Gabor Krizsanits, Randell Jesup, Margaret Leibovic, Gustavo Grieco, Aki Helin, musicDespiteEverything, Nicholas Hurley, Muneaki Nishimura, Francois Marier, Hanno Bock, Jordi Chancel, window, and Ronald Crane reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.

A remote user can cause denial of service conditions.

A remote user can bypass security controls on the target system.

A remote user can spoof a URL.

Solution:   Red Hat has issued a fix for CVE-2016-1930 and CVE-2016-1935.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2016-0071.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2016-0071.html (Links to External Site)
Cause:   Access control error, Boundary error, Input validation 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.
Jan 27 2016 Mozilla Firefox Multiple Flaws Let Remote Users Execute Arbitrary Code, Spoof the Address Bar, Bypass Security Restrictions, and Deny Service



 Source Message Contents

Subject:  [RHSA-2016:0071-01] Critical: firefox security update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2016:0071-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0071.html
Issue date:        2016-01-27
CVE Names:         CVE-2016-1930 CVE-2016-1935 
=====================================================================

1. Summary:

Updated firefox packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 5, 6, and 7.

Red Hat Product Security 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, 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) - 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. 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 crash or,
potentially, execute arbitrary code with the privileges of the user running
Firefox. (CVE-2016-1930, CVE-2016-1935)

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Bob Clary, Christian Holler, Nils Ohlmeier, Gary
Kwong, Jesse Ruderman, Carsten Book, Randell Jesup, and Aki Helin as the
original reporters of these issues.

All Firefox users should upgrade to these updated packages, which contain
Firefox version 38.6.0 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.

For details on how to apply this update, refer to:

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

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

1301818 - CVE-2016-1930 Mozilla: Miscellaneous memory safety hazards (rv:38.6) (MFSA 2016-01)
1301821 - CVE-2016-1935 Mozilla: Buffer overflow in WebGL after out of memory allocation (MFSA 2016-03)

6. Package List:

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

Source:
firefox-38.6.0-1.el5_11.src.rpm

i386:
firefox-38.6.0-1.el5_11.i386.rpm
firefox-debuginfo-38.6.0-1.el5_11.i386.rpm

x86_64:
firefox-38.6.0-1.el5_11.i386.rpm
firefox-38.6.0-1.el5_11.x86_64.rpm
firefox-debuginfo-38.6.0-1.el5_11.i386.rpm
firefox-debuginfo-38.6.0-1.el5_11.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
firefox-38.6.0-1.el5_11.src.rpm

i386:
firefox-38.6.0-1.el5_11.i386.rpm
firefox-debuginfo-38.6.0-1.el5_11.i386.rpm

ppc:
firefox-38.6.0-1.el5_11.ppc64.rpm
firefox-debuginfo-38.6.0-1.el5_11.ppc64.rpm

s390x:
firefox-38.6.0-1.el5_11.s390.rpm
firefox-38.6.0-1.el5_11.s390x.rpm
firefox-debuginfo-38.6.0-1.el5_11.s390.rpm
firefox-debuginfo-38.6.0-1.el5_11.s390x.rpm

x86_64:
firefox-38.6.0-1.el5_11.i386.rpm
firefox-38.6.0-1.el5_11.x86_64.rpm
firefox-debuginfo-38.6.0-1.el5_11.i386.rpm
firefox-debuginfo-38.6.0-1.el5_11.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
firefox-38.6.0-1.el6_7.src.rpm

i386:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm

x86_64:
firefox-38.6.0-1.el6_7.x86_64.rpm
firefox-debuginfo-38.6.0-1.el6_7.x86_64.rpm

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

x86_64:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm

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

Source:
firefox-38.6.0-1.el6_7.src.rpm

x86_64:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-38.6.0-1.el6_7.x86_64.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
firefox-38.6.0-1.el6_7.src.rpm

i386:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm

ppc64:
firefox-38.6.0-1.el6_7.ppc64.rpm
firefox-debuginfo-38.6.0-1.el6_7.ppc64.rpm

s390x:
firefox-38.6.0-1.el6_7.s390x.rpm
firefox-debuginfo-38.6.0-1.el6_7.s390x.rpm

x86_64:
firefox-38.6.0-1.el6_7.x86_64.rpm
firefox-debuginfo-38.6.0-1.el6_7.x86_64.rpm

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

ppc64:
firefox-38.6.0-1.el6_7.ppc.rpm
firefox-debuginfo-38.6.0-1.el6_7.ppc.rpm

s390x:
firefox-38.6.0-1.el6_7.s390.rpm
firefox-debuginfo-38.6.0-1.el6_7.s390.rpm

x86_64:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
firefox-38.6.0-1.el6_7.src.rpm

i386:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm

x86_64:
firefox-38.6.0-1.el6_7.x86_64.rpm
firefox-debuginfo-38.6.0-1.el6_7.x86_64.rpm

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

x86_64:
firefox-38.6.0-1.el6_7.i686.rpm
firefox-debuginfo-38.6.0-1.el6_7.i686.rpm

Red Hat Enterprise Linux Client (v. 7):

Source:
firefox-38.6.0-1.el7_2.src.rpm

x86_64:
firefox-38.6.0-1.el7_2.x86_64.rpm
firefox-debuginfo-38.6.0-1.el7_2.x86_64.rpm

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

x86_64:
firefox-38.6.0-1.el7_2.i686.rpm
firefox-debuginfo-38.6.0-1.el7_2.i686.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
firefox-38.6.0-1.el7_2.src.rpm

ppc64:
firefox-38.6.0-1.el7_2.ppc64.rpm
firefox-debuginfo-38.6.0-1.el7_2.ppc64.rpm

ppc64le:
firefox-38.6.0-1.el7_2.ppc64le.rpm
firefox-debuginfo-38.6.0-1.el7_2.ppc64le.rpm

s390x:
firefox-38.6.0-1.el7_2.s390x.rpm
firefox-debuginfo-38.6.0-1.el7_2.s390x.rpm

x86_64:
firefox-38.6.0-1.el7_2.x86_64.rpm
firefox-debuginfo-38.6.0-1.el7_2.x86_64.rpm

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

ppc64:
firefox-38.6.0-1.el7_2.ppc.rpm
firefox-debuginfo-38.6.0-1.el7_2.ppc.rpm

s390x:
firefox-38.6.0-1.el7_2.s390.rpm
firefox-debuginfo-38.6.0-1.el7_2.s390.rpm

x86_64:
firefox-38.6.0-1.el7_2.i686.rpm
firefox-debuginfo-38.6.0-1.el7_2.i686.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
firefox-38.6.0-1.el7_2.src.rpm

x86_64:
firefox-38.6.0-1.el7_2.x86_64.rpm
firefox-debuginfo-38.6.0-1.el7_2.x86_64.rpm

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

x86_64:
firefox-38.6.0-1.el7_2.i686.rpm
firefox-debuginfo-38.6.0-1.el7_2.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-2016-1930
https://access.redhat.com/security/cve/CVE-2016-1935
https://access.redhat.com/security/updates/classification/#critical
https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#firefoxesr38.6

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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