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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox 'window.location' Bugs Permit Cross-Site Scripting Attacks and May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1027702
SecurityTracker URL:  http://securitytracker.com/id/1027702
CVE Reference:   CVE-2012-4194, CVE-2012-4195, CVE-2012-4196   (Links to External Site)
Date:  Oct 27 2012
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 16.0.2
Description:   Three vulnerabilities were reported in Mozilla Firefox. A remote user can conduct cross-site scripting attacks. A remote user may be able to cause arbitrary code to be executed on the target user's system.

A remote user can exploit the valueOf() method of window.location to, in combination with some plugins, inject scripting code to cause arbitrary scripting code to be executed by the target user's browser [CVE-2012-4194]. The code will run in the security context of an arbitrary site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

The nsLocation::CheckURL() function in window.location can be made to return the wrong calling document and principal [CVE-2012-4195]. A remote user can exploit this to cause arbitrary scripting code to be executed by the target user's browser. The code will run in the security context of an arbitrary site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user may also be able to exploit this flaw in conjunction with a browser add-on to cause arbitrary code to be executed on the target user's system.

A remote user can exploit bypass security wrapper protections on the Location object, allowing the cross-origin reading of the Location object [CVE-2012-4196].

Antoine Delignat-Lavaud of the PROSECCO research team at INRIA Paris, Mariusz Mlynski, and moz_bug_r_a4 reported these vulnerabilities.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with an arbitrary site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user may be able to cause arbitrary code to be executed 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-2012-1407.html

Vendor URL:  www.mozilla.org/security/announce/2012/mfsa2012-90.html (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6

Message History:   This archive entry is a follow-up to the message listed below.
Oct 27 2012 Mozilla Firefox 'window.location' Bugs Permit Cross-Site Scripting Attacks and May Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2012:1407-01] Critical: firefox security update

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Hash: SHA1

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

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2012:1407-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1407.html
Issue date:        2012-10-26
CVE Names:         CVE-2012-4194 CVE-2012-4195 CVE-2012-4196 
=====================================================================

1. Summary:

Updated firefox packages that fix multiple 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:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
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 Desktop Optional (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 Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

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

Multiple flaws were found in the location object implementation in Firefox.
Malicious content could be used to perform cross-site scripting attacks,
bypass the same-origin policy, or cause Firefox to execute arbitrary code.
(CVE-2012-4194, CVE-2012-4195, CVE-2012-4196)

For technical details regarding these flaws, refer to the Mozilla security
advisories for Firefox 10.0.10 ESR. You can find a link to the Mozilla
advisories in the References section of this erratum.

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Mariusz Mlynski, moz_bug_r_a4, and Antoine
Delignat-Lavaud as the original reporters of these issues.

All Firefox users should upgrade to these updated packages, which contain
Firefox version 10.0.10 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/knowledge/articles/11258

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

869893 - CVE-2012-4194 CVE-2012-4195 CVE-2012-4196 Mozilla: Fixes for Location object issues (MFSA 2012-90)

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/firefox-10.0.10-1.el5_8.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xulrunner-10.0.10-1.el5_8.src.rpm

i386:
firefox-10.0.10-1.el5_8.i386.rpm
firefox-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-10.0.10-1.el5_8.i386.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.i386.rpm

x86_64:
firefox-10.0.10-1.el5_8.i386.rpm
firefox-10.0.10-1.el5_8.x86_64.rpm
firefox-debuginfo-10.0.10-1.el5_8.i386.rpm
firefox-debuginfo-10.0.10-1.el5_8.x86_64.rpm
xulrunner-10.0.10-1.el5_8.i386.rpm
xulrunner-10.0.10-1.el5_8.x86_64.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xulrunner-10.0.10-1.el5_8.src.rpm

i386:
xulrunner-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-devel-10.0.10-1.el5_8.i386.rpm

x86_64:
xulrunner-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.x86_64.rpm
xulrunner-devel-10.0.10-1.el5_8.i386.rpm
xulrunner-devel-10.0.10-1.el5_8.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/firefox-10.0.10-1.el5_8.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xulrunner-10.0.10-1.el5_8.src.rpm

i386:
firefox-10.0.10-1.el5_8.i386.rpm
firefox-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-10.0.10-1.el5_8.i386.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-devel-10.0.10-1.el5_8.i386.rpm

ia64:
firefox-10.0.10-1.el5_8.ia64.rpm
firefox-debuginfo-10.0.10-1.el5_8.ia64.rpm
xulrunner-10.0.10-1.el5_8.ia64.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.ia64.rpm
xulrunner-devel-10.0.10-1.el5_8.ia64.rpm

ppc:
firefox-10.0.10-1.el5_8.ppc.rpm
firefox-debuginfo-10.0.10-1.el5_8.ppc.rpm
xulrunner-10.0.10-1.el5_8.ppc.rpm
xulrunner-10.0.10-1.el5_8.ppc64.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.ppc.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.ppc64.rpm
xulrunner-devel-10.0.10-1.el5_8.ppc.rpm
xulrunner-devel-10.0.10-1.el5_8.ppc64.rpm

s390x:
firefox-10.0.10-1.el5_8.s390.rpm
firefox-10.0.10-1.el5_8.s390x.rpm
firefox-debuginfo-10.0.10-1.el5_8.s390.rpm
firefox-debuginfo-10.0.10-1.el5_8.s390x.rpm
xulrunner-10.0.10-1.el5_8.s390.rpm
xulrunner-10.0.10-1.el5_8.s390x.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.s390.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.s390x.rpm
xulrunner-devel-10.0.10-1.el5_8.s390.rpm
xulrunner-devel-10.0.10-1.el5_8.s390x.rpm

x86_64:
firefox-10.0.10-1.el5_8.i386.rpm
firefox-10.0.10-1.el5_8.x86_64.rpm
firefox-debuginfo-10.0.10-1.el5_8.i386.rpm
firefox-debuginfo-10.0.10-1.el5_8.x86_64.rpm
xulrunner-10.0.10-1.el5_8.i386.rpm
xulrunner-10.0.10-1.el5_8.x86_64.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.i386.rpm
xulrunner-debuginfo-10.0.10-1.el5_8.x86_64.rpm
xulrunner-devel-10.0.10-1.el5_8.i386.rpm
xulrunner-devel-10.0.10-1.el5_8.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/firefox-10.0.10-1.el6_3.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

i386:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm

x86_64:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-10.0.10-1.el6_3.x86_64.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.x86_64.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

i386:
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm

x86_64:
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/firefox-10.0.10-1.el6_3.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

x86_64:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-10.0.10-1.el6_3.x86_64.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.x86_64.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/firefox-10.0.10-1.el6_3.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

i386:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm

ppc64:
firefox-10.0.10-1.el6_3.ppc.rpm
firefox-10.0.10-1.el6_3.ppc64.rpm
firefox-debuginfo-10.0.10-1.el6_3.ppc.rpm
firefox-debuginfo-10.0.10-1.el6_3.ppc64.rpm
xulrunner-10.0.10-1.el6_3.ppc.rpm
xulrunner-10.0.10-1.el6_3.ppc64.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.ppc.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.ppc64.rpm

s390x:
firefox-10.0.10-1.el6_3.s390.rpm
firefox-10.0.10-1.el6_3.s390x.rpm
firefox-debuginfo-10.0.10-1.el6_3.s390.rpm
firefox-debuginfo-10.0.10-1.el6_3.s390x.rpm
xulrunner-10.0.10-1.el6_3.s390.rpm
xulrunner-10.0.10-1.el6_3.s390x.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.s390.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.s390x.rpm

x86_64:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-10.0.10-1.el6_3.x86_64.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.x86_64.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

i386:
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm

ppc64:
xulrunner-debuginfo-10.0.10-1.el6_3.ppc.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.ppc64.rpm
xulrunner-devel-10.0.10-1.el6_3.ppc.rpm
xulrunner-devel-10.0.10-1.el6_3.ppc64.rpm

s390x:
xulrunner-debuginfo-10.0.10-1.el6_3.s390.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.s390x.rpm
xulrunner-devel-10.0.10-1.el6_3.s390.rpm
xulrunner-devel-10.0.10-1.el6_3.s390x.rpm

x86_64:
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/firefox-10.0.10-1.el6_3.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

i386:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm

x86_64:
firefox-10.0.10-1.el6_3.i686.rpm
firefox-10.0.10-1.el6_3.x86_64.rpm
firefox-debuginfo-10.0.10-1.el6_3.i686.rpm
firefox-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-10.0.10-1.el6_3.i686.rpm
xulrunner-10.0.10-1.el6_3.x86_64.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/xulrunner-10.0.10-1.el6_3.src.rpm

i386:
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm

x86_64:
xulrunner-debuginfo-10.0.10-1.el6_3.i686.rpm
xulrunner-debuginfo-10.0.10-1.el6_3.x86_64.rpm
xulrunner-devel-10.0.10-1.el6_3.i686.rpm
xulrunner-devel-10.0.10-1.el6_3.x86_64.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/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-4194.html
https://www.redhat.com/security/data/cve/CVE-2012-4195.html
https://www.redhat.com/security/data/cve/CVE-2012-4196.html
https://access.redhat.com/security/updates/classification/#critical
http://www.mozilla.org/security/known-vulnerabilities/firefoxESR.html

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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