Critical: firefox security update

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

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

Mozilla Firefox is an open source Web browser. XULRunner provides the XUL
Runtime environment for Mozilla Firefox. nspr provides the Netscape
Portable Runtime (NSPR).

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-2009-3070, CVE-2009-3071, CVE-2009-3072, CVE-2009-3074,
CVE-2009-3075)

A use-after-free flaw was found in Firefox. An attacker could use this flaw
to crash Firefox or, potentially, execute arbitrary code with the
privileges of the user running Firefox. (CVE-2009-3077)

A flaw was found in the way Firefox handles malformed JavaScript. A website
with an object containing malicious JavaScript could execute that
JavaScript with the privileges of the user running Firefox. (CVE-2009-3079)

Descriptions in the dialogs when adding and removing PKCS #11 modules were
not informative. An attacker able to trick a user into installing a
malicious PKCS #11 module could use this flaw to install their own
Certificate Authority certificates on a user's machine, making it possible
to trick the user into believing they are viewing a trusted site or,
potentially, execute arbitrary code with the privileges of the user running
Firefox. (CVE-2009-3076)

A flaw was found in the way Firefox displays the address bar when
window.open() is called in a certain way. An attacker could use this flaw
to conceal a malicious URL, possibly tricking a user into believing they
are viewing a trusted site. (CVE-2009-2654)

A flaw was found in the way Firefox displays certain Unicode characters. An
attacker could use this flaw to conceal a malicious URL, possibly tricking
a user into believing they are viewing a trusted site. (CVE-2009-3078)

For technical details regarding these flaws, refer to the Mozilla security
advisories for Firefox 3.0.14. You can find a link to the Mozilla
advisories in the References section of this errata.

All Firefox users should upgrade to these updated packages, which contain
Firefox version 3.0.14, which corrects these issues. After installing the
update, Firefox must be restarted for the changes to take effect.

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/docs/DOC-11259

521311 - CVE-2009-2654 firefox: URL bar spoofing vulnerability
521686 - CVE-2009-3070 Firefox 3.5 3.0.14 browser engine crashes
521687 - CVE-2009-3071 Firefox 3.5.2 3.0.14 browser engine crashes
521688 - CVE-2009-3072 Firefox 3.5.3 3.0.14 browser engine crashes
521690 - CVE-2009-3074 Firefox 3.5 3.0.14 JavaScript engine crashes
521691 - CVE-2009-3075 Firefox 3.5.2 3.0.14 JavaScript engine crashes
521692 - CVE-2009-3076 Firefox 3.0.14 Insufficient warning for PKCS11 module installation and removal
521693 - CVE-2009-3077 Firefox 3.5.3 3.0.14 TreeColumns dangling pointer vulnerability
521694 - CVE-2009-3078 Firefox 3.5.3 3.0.14 Location bar spoofing via tall line-height Unicode characters
521695 - CVE-2009-3079 Firefox 3.5.3 3.0.14 Chrome privilege escalation with FeedWriter

https://www.redhat.com/security/data/cve/CVE-2009-2654.html
https://www.redhat.com/security/data/cve/CVE-2009-3070.html
https://www.redhat.com/security/data/cve/CVE-2009-3071.html
https://www.redhat.com/security/data/cve/CVE-2009-3072.html
https://www.redhat.com/security/data/cve/CVE-2009-3074.html
https://www.redhat.com/security/data/cve/CVE-2009-3075.html
https://www.redhat.com/security/data/cve/CVE-2009-3076.html
https://www.redhat.com/security/data/cve/CVE-2009-3077.html
https://www.redhat.com/security/data/cve/CVE-2009-3078.html
https://www.redhat.com/security/data/cve/CVE-2009-3079.html
http://www.redhat.com/security/updates/classification/#critical
http://www.mozilla.org/security/known-vulnerabilities/firefox30.html#firefox3.0.14