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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox CSS Reference Counter Bug Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1020510
SecurityTracker URL:  http://securitytracker.com/id/1020510
CVE Reference:   CVE-2008-2785   (Links to External Site)
Date:  Jul 16 2008
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.x, 3.0
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 a large number of references to a common CSS object to overflow the CSSValue array data structure. The browser will attempt to free the object while it is still in use, which may allow arbitrary code to be executed. The code will run with the privileges of the target user.

TippingPoint reported this vulnerability.
Impact:   A remote user can cause arbitrary code to be executed on the target user's system.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0598.html
Vendor URL:  www.mozilla.org/security/announce/2008/mfsa2008-34.html (Links to External Site)
Cause:   Boundary error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Jun 20 2008 Mozilla Firefox CSS Reference Counter Bug Lets Remote Users Execute Arbitrary Code


 Source Message Contents
Date:  Wed, 16 Jul 2008 13:12:45 -0400
Subject:  [RHSA-2008:0598-02] Critical: firefox security update


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

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2008:0598-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0598.html
Issue date:        2008-07-16
CVE Names:         CVE-2008-2785 CVE-2008-2933 
=====================================================================

1. Summary:

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

This update has been rated as having critical security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux AS version 4.5.z - 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 ES version 4.5.z - 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.

An integer overflow flaw was found in the way Firefox displayed certain web
content. A malicious web site could cause Firefox to crash, or execute
arbitrary code with the permissions of the user running Firefox.
(CVE-2008-2785)

A flaw was found in the way Firefox handled certain command line URLs. If
another application passed Firefox a malformed URL, it could result in
Firefox executing local malicious content with chrome privileges.
(CVE-2008-2933)

All firefox users should upgrade to this updated package, which contains
backported patches that correct these issues.

4. Solution:

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

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

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

452204 - CVE-2008-2785 mozilla: CSS reference counter overflow (ZDI-CAN-349)
454697 - CVE-2008-2933 Firefox command line URL launches multi-tabs

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/firefox-1.5.0.12-0.21.el4.src.rpm

i386:
firefox-1.5.0.12-0.21.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.21.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ia64.rpm

ppc:
firefox-1.5.0.12-0.21.el4.ppc.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ppc.rpm

s390:
firefox-1.5.0.12-0.21.el4.s390.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.s390.rpm

s390x:
firefox-1.5.0.12-0.21.el4.s390x.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.s390x.rpm

x86_64:
firefox-1.5.0.12-0.21.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.x86_64.rpm

Red Hat Enterprise Linux AS version 4.5.z:

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/4AS-4.5.z/en/os/SRPMS/firefox-1.5.0.12-0.21.el4.src.rpm

i386:
firefox-1.5.0.12-0.21.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.21.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ia64.rpm

ppc:
firefox-1.5.0.12-0.21.el4.ppc.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ppc.rpm

s390:
firefox-1.5.0.12-0.21.el4.s390.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.s390.rpm

s390x:
firefox-1.5.0.12-0.21.el4.s390x.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.s390x.rpm

x86_64:
firefox-1.5.0.12-0.21.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/firefox-1.5.0.12-0.21.el4.src.rpm

i386:
firefox-1.5.0.12-0.21.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.i386.rpm

x86_64:
firefox-1.5.0.12-0.21.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/firefox-1.5.0.12-0.21.el4.src.rpm

i386:
firefox-1.5.0.12-0.21.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.21.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ia64.rpm

x86_64:
firefox-1.5.0.12-0.21.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4.5.z:

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/4ES-4.5.z/en/os/SRPMS/firefox-1.5.0.12-0.21.el4.src.rpm

i386:
firefox-1.5.0.12-0.21.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.21.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ia64.rpm

x86_64:
firefox-1.5.0.12-0.21.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/firefox-1.5.0.12-0.21.el4.src.rpm

i386:
firefox-1.5.0.12-0.21.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.21.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.ia64.rpm

x86_64:
firefox-1.5.0.12-0.21.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.21.el4.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:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2785
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2933
http://www.redhat.com/security/updates/classification/#critical

8. Contact:

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

Copyright 2008 Red Hat, Inc.
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