A new update is available for Red Hat Enterprise Linux. Here the announcement:
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Red Hat Security Advisory

Synopsis: Critical: firefox security update
Advisory ID: RHSA-2008:0549-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0549.html
Issue date: 2008-07-02
CVE Names: CVE-2008-2798 CVE-2008-2799 CVE-2008-2800
CVE-2008-2801 CVE-2008-2802 CVE-2008-2803
CVE-2008-2805 CVE-2008-2807 CVE-2008-2808
CVE-2008-2809 CVE-2008-2810 CVE-2008-2811
=====================================================================

1. Summary:

An updated firefox package that fixes several 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 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.

Multiple flaws were found in the processing of malformed JavaScript
content. A web page containing such malicious content could cause Firefox
to crash or, potentially, execute arbitrary code as the user running
Firefox. (CVE-2008-2801, CVE-2008-2802, CVE-2008-2803)

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 as the user running Firefox.
(CVE-2008-2798, CVE-2008-2799, CVE-2008-2811)

Several flaws were found in the way malformed web content was displayed. A
web page containing specially-crafted content could potentially trick a
Firefox user into surrendering sensitive information. (CVE-2008-2800)

Two local file disclosure flaws were found in Firefox. A web page
containing malicious content could cause Firefox to reveal the contents of
a local file to a remote attacker. (CVE-2008-2805, CVE-2008-2810)

A flaw was found in the way a malformed .properties file was processed by
Firefox. A malicious extension could read uninitialized memory, possibly
leaking sensitive data to the extension. (CVE-2008-2807)

A flaw was found in the way Firefox escaped a listing of local file names.
If a user could be tricked into listing a local directory containing
malicious file names, arbitrary JavaScript could be run with the
permissions of the user running Firefox. (CVE-2008-2808)

A flaw was found in the way Firefox displayed information about self-signed
certificates. It was possible for a self-signed certificate to contain
multiple alternate name entries, which were not all displayed to the user,
allowing them to mistakenly extend trust to an unknown site.
(CVE-2008-2809)

All Mozilla 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/):

452597 - CVE-2008-2798 Firefox malformed web content flaws
452598 - CVE-2008-2799 Firefox javascript arbitrary code execution
452599 - CVE-2008-2800 Firefox XSS attacks
452600 - CVE-2008-2802 Firefox arbitrary JavaScript code execution
452602 - CVE-2008-2803 Firefox javascript arbitrary code execution
452604 - CVE-2008-2805 Firefox arbitrary file disclosure
452605 - CVE-2008-2801 Firefox arbitrary signed JAR code execution
452709 - CVE-2008-2807 Firefox .properties memory leak
452710 - CVE-2008-2808 Firefox file location escaping flaw
452711 - CVE-2008-2809 Firefox self signed certificate flaw
452712 - CVE-2008-2810 Firefox arbitrary file disclosure
453007 - CVE-2008-2811 Firefox block reflow flaw

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/firefox-1.5.0.12-0.19.el4.src.rpm

i386:
firefox-1.5.0.12-0.19.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.19.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.ia64.rpm

ppc:
firefox-1.5.0.12-0.19.el4.ppc.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.ppc.rpm

s390:
firefox-1.5.0.12-0.19.el4.s390.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.s390.rpm

s390x:
firefox-1.5.0.12-0.19.el4.s390x.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.s390x.rpm

x86_64:
firefox-1.5.0.12-0.19.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/firefox-1.5.0.12-0.19.el4.src.rpm

i386:
firefox-1.5.0.12-0.19.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.i386.rpm

x86_64:
firefox-1.5.0.12-0.19.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/firefox-1.5.0.12-0.19.el4.src.rpm

i386:
firefox-1.5.0.12-0.19.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.19.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.ia64.rpm

x86_64:
firefox-1.5.0.12-0.19.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/firefox-1.5.0.12-0.19.el4.src.rpm

i386:
firefox-1.5.0.12-0.19.el4.i386.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.i386.rpm

ia64:
firefox-1.5.0.12-0.19.el4.ia64.rpm
firefox-debuginfo-1.5.0.12-0.19.el4.ia64.rpm

x86_64:
firefox-1.5.0.12-0.19.el4.x86_64.rpm
firefox-debuginfo-1.5.0.12-0.19.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-2008-2798
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2799
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2800
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2801
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2802
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2803
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2805
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2807
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2808
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2809
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2810
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2811
http://www.redhat.com/security/updates/classification/#critical

8. Contact:

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

Copyright 2008 Red Hat, Inc.
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RHSA-2008:0569-01 Critical: firefox security update
RHSA-2008:0270-01 Important: libvorbis security update
Firefox 3 ships tonight