RHSA-2010:0332

Problem Description:

Updated firefox packages that fix several security issues are now available
for Red Hat Enterprise Linux 4 and 5.

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 AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, 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. XULRunner provides the XUL
Runtime environment for Mozilla Firefox.

Several use-after-free flaws were found in Firefox. Visiting a web page
containing malicious content could result in Firefox executing arbitrary
code with the privileges of the user running Firefox. (CVE-2010-0175,
CVE-2010-0176, CVE-2010-0177)

A flaw was found in Firefox that could allow an applet to generate a drag
and drop action from a mouse click. Such an action could be used to execute
arbitrary JavaScript with the privileges of the user running Firefox.
(CVE-2010-0178)

A privilege escalation flaw was found in Firefox when the Firebug add-on is
in use. The XMLHttpRequestSpy module in the Firebug add-on exposes a Chrome
privilege escalation flaw that could be used to execute arbitrary
JavaScript with the privileges of the user running Firefox. (CVE-2010-0179)

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-2010-0174)

For technical details regarding these flaws, refer to the Mozilla security
advisories for Firefox 3.0.19. You can find a link to the Mozilla
advisories in the References section of this erratum.

All Firefox users should upgrade to these updated packages, which contain
Firefox version 3.0.19, 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
http://kbase.redhat.com/faq/docs/DOC-11259

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

578147 - CVE-2010-0174 Mozilla crashes with evidence of memory corruption
578149 - CVE-2010-0175 Mozilla remote code execution with use-after-free in nsTreeSelection
578150 - CVE-2010-0176 Mozilla Dangling pointer vulnerability in nsTreeContentView
578152 - CVE-2010-0177 Mozilla Dangling pointer vulnerability in nsPluginArray
578154 - CVE-2010-0178 Firefox Chrome privilege escalation via forced URL drag and drop
578155 - CVE-2010-0179 Firefox Arbitrary code execution with Firebug XMLHttpRequestSpy