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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox Heap Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1024652
SecurityTracker URL:  http://securitytracker.com/id/1024652
CVE Reference:   CVE-2010-3765   (Links to External Site)
Date:  Oct 28 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.5.x prior to 3.5.15, 3.6.x prior to 3.6.12
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 scripting code that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.

Specially crafted document.write() and appendChild() calls can create duplicate text frames and overwrite buffers.

This vulnerability is being actively exploited on Windows-based systems.

Morten Krakvik of Telenor SOC reported this vulnerability.

Impact:   A remote user can create scripting code 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-2010-0808.html

Vendor URL:  www.mozilla.org/security/announce/2010/mfsa2010-73.html (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4

Message History:   This archive entry is a follow-up to the message listed below.
Oct 27 2010 Mozilla Firefox Heap Overflow Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2010:0808-01] Critical: firefox security update

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

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2010:0808-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0808.html
Issue date:        2010-10-27
CVE Names:         CVE-2010-3765 
=====================================================================

1. Summary:

An updated firefox package that fixes one security issue is now available
for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having critical
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

Mozilla Firefox is an open source web browser.

A race condition flaw was found in the way Firefox handled Document Object
Model (DOM) element properties. 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-2010-3765)

For technical details regarding this flaw, refer to the Mozilla security
advisories for Firefox 3.6.12. You can find a link to the Mozilla
advisories in the References section of this erratum.

All Firefox users should upgrade to this updated package, which contains a
backported patch to correct this issue. 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
http://kbase.redhat.com/faq/docs/DOC-11259

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

646997 - CVE-2010-3765 Firefox race condition flaw (MFSA 2010-73)

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/firefox-3.6.11-4.el4_8.src.rpm

i386:
firefox-3.6.11-4.el4_8.i386.rpm
firefox-debuginfo-3.6.11-4.el4_8.i386.rpm

ia64:
firefox-3.6.11-4.el4_8.ia64.rpm
firefox-debuginfo-3.6.11-4.el4_8.ia64.rpm

ppc:
firefox-3.6.11-4.el4_8.ppc.rpm
firefox-debuginfo-3.6.11-4.el4_8.ppc.rpm

s390:
firefox-3.6.11-4.el4_8.s390.rpm
firefox-debuginfo-3.6.11-4.el4_8.s390.rpm

s390x:
firefox-3.6.11-4.el4_8.s390x.rpm
firefox-debuginfo-3.6.11-4.el4_8.s390x.rpm

x86_64:
firefox-3.6.11-4.el4_8.x86_64.rpm
firefox-debuginfo-3.6.11-4.el4_8.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/firefox-3.6.11-4.el4_8.src.rpm

i386:
firefox-3.6.11-4.el4_8.i386.rpm
firefox-debuginfo-3.6.11-4.el4_8.i386.rpm

x86_64:
firefox-3.6.11-4.el4_8.x86_64.rpm
firefox-debuginfo-3.6.11-4.el4_8.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/firefox-3.6.11-4.el4_8.src.rpm

i386:
firefox-3.6.11-4.el4_8.i386.rpm
firefox-debuginfo-3.6.11-4.el4_8.i386.rpm

ia64:
firefox-3.6.11-4.el4_8.ia64.rpm
firefox-debuginfo-3.6.11-4.el4_8.ia64.rpm

x86_64:
firefox-3.6.11-4.el4_8.x86_64.rpm
firefox-debuginfo-3.6.11-4.el4_8.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/firefox-3.6.11-4.el4_8.src.rpm

i386:
firefox-3.6.11-4.el4_8.i386.rpm
firefox-debuginfo-3.6.11-4.el4_8.i386.rpm

ia64:
firefox-3.6.11-4.el4_8.ia64.rpm
firefox-debuginfo-3.6.11-4.el4_8.ia64.rpm

x86_64:
firefox-3.6.11-4.el4_8.x86_64.rpm
firefox-debuginfo-3.6.11-4.el4_8.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://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-3765.html
http://www.redhat.com/security/updates/classification/#critical
http://www.mozilla.org/security/known-vulnerabilities/firefox36.html#firefox3.6.12

8. Contact:

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

Copyright 2010 Red Hat, Inc.
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