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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox Regression Error in Plugin Parameter Array Fix Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1024245
SecurityTracker URL:  http://securitytracker.com/id/1024245
CVE Reference:   CVE-2010-2755   (Links to External Site)
Date:  Jul 24 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.6.7
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system.

The fix to the plugin parameter array crash that was included in Mozilla Firefox 3.6.7 introduced a potential memory corruption error. A remote user can create specially crafted HTML that, when loaded by the target user, will free a parameter arry prematurely, potentially executing arbitrary code. The code will run with the privileges of the target user.

Daniel Holbert reported this vulnerability.
Impact:   A remote user can create HTML 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-2010-0558.html
Vendor URL:  www.mozilla.org/security/announce/2010/mfsa2010-48.html (Links to External Site)
Cause:   Access control error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Jul 24 2010 Mozilla Firefox Regression Error in Plugin Parameter Array Fix Lets Remote Users Execute Arbitrary Code


 Source Message Contents
Date:  Fri, 23 Jul 2010 20:58:36 -0400
Subject:  [RHSA-2010:0558-01] Critical: firefox security update

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

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

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2010:0558-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0558.html
Issue date:        2010-07-23
CVE Names:         CVE-2010-2755 
=====================================================================

1. Summary:

Updated firefox packages that fix a security issue are now available
for Red Hat Enterprise Linux 4.

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:

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.

An invalid free flaw was found in Firefox's plugin handler. Malicious web
content could result in an invalid memory pointer being freed, causing
Firefox to crash or, potentially, execute arbitrary code with the
privileges of the user running Firefox. (CVE-2010-2755)

All Firefox users should upgrade to these updated packages, which contain a
backported patch that corrects 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/):

617657 - CVE-2010-2755 Mozilla arbitrary free flaw

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/firefox-3.6.7-3.el4.src.rpm

i386:
firefox-3.6.7-3.el4.i386.rpm
firefox-debuginfo-3.6.7-3.el4.i386.rpm

ia64:
firefox-3.6.7-3.el4.ia64.rpm
firefox-debuginfo-3.6.7-3.el4.ia64.rpm

ppc:
firefox-3.6.7-3.el4.ppc.rpm
firefox-debuginfo-3.6.7-3.el4.ppc.rpm

s390:
firefox-3.6.7-3.el4.s390.rpm
firefox-debuginfo-3.6.7-3.el4.s390.rpm

s390x:
firefox-3.6.7-3.el4.s390x.rpm
firefox-debuginfo-3.6.7-3.el4.s390x.rpm

x86_64:
firefox-3.6.7-3.el4.x86_64.rpm
firefox-debuginfo-3.6.7-3.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/firefox-3.6.7-3.el4.src.rpm

i386:
firefox-3.6.7-3.el4.i386.rpm
firefox-debuginfo-3.6.7-3.el4.i386.rpm

x86_64:
firefox-3.6.7-3.el4.x86_64.rpm
firefox-debuginfo-3.6.7-3.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/firefox-3.6.7-3.el4.src.rpm

i386:
firefox-3.6.7-3.el4.i386.rpm
firefox-debuginfo-3.6.7-3.el4.i386.rpm

ia64:
firefox-3.6.7-3.el4.ia64.rpm
firefox-debuginfo-3.6.7-3.el4.ia64.rpm

x86_64:
firefox-3.6.7-3.el4.x86_64.rpm
firefox-debuginfo-3.6.7-3.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/firefox-3.6.7-3.el4.src.rpm

i386:
firefox-3.6.7-3.el4.i386.rpm
firefox-debuginfo-3.6.7-3.el4.i386.rpm

ia64:
firefox-3.6.7-3.el4.ia64.rpm
firefox-debuginfo-3.6.7-3.el4.ia64.rpm

x86_64:
firefox-3.6.7-3.el4.x86_64.rpm
firefox-debuginfo-3.6.7-3.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:

https://www.redhat.com/security/data/cve/CVE-2010-2755.html
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 2010 Red Hat, Inc.
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