Critical: firefox security update

Updated firefox packages that fix several security issues are now available
for Red Hat Enterprise Linux 4, 5, and 6.

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.

Mozilla Firefox is an open source web browser. XULRunner provides the XUL
Runtime environment for Mozilla Firefox.

Several flaws were found in the processing of malformed web content. A web
page containing malicious content could possibly lead to arbitrary code
execution with the privileges of the user running Firefox. (CVE-2011-0080,
CVE-2011-0081)

An arbitrary memory write flaw was found in the way Firefox handled
out-of-memory conditions. If all memory was consumed when a user visited a
malicious web page, it could possibly lead to arbitrary code execution
with the privileges of the user running Firefox. (CVE-2011-0078)

An integer overflow flaw was found in the way Firefox handled the HTML
frameset tag. A web page with a frameset tag containing large values for
the "rows" and "cols" attributes could trigger this flaw, possibly leading
to arbitrary code execution with the privileges of the user running
Firefox. (CVE-2011-0077)

A flaw was found in the way Firefox handled the HTML iframe tag. A web page
with an iframe tag containing a specially-crafted source address could
trigger this flaw, possibly leading to arbitrary code execution with the
privileges of the user running Firefox. (CVE-2011-0075)

A flaw was found in the way Firefox displayed multiple marquee elements. A
malformed HTML document could cause Firefox to execute arbitrary code with
the privileges of the user running Firefox. (CVE-2011-0074)

A flaw was found in the way Firefox handled the nsTreeSelection element.
Malformed content could cause Firefox to execute arbitrary code with the
privileges of the user running Firefox. (CVE-2011-0073)

A use-after-free flaw was found in the way Firefox appended frame and
iframe elements to a DOM tree when the NoScript add-on was enabled.
Malicious HTML content could cause Firefox to execute arbitrary code with
the privileges of the user running Firefox. (CVE-2011-0072)

A directory traversal flaw was found in the Firefox resource:// protocol
handler. Malicious content could cause Firefox to access arbitrary files
accessible to the user running Firefox. (CVE-2011-0071)

A double free flaw was found in the way Firefox handled
"application/http-index-format" documents. A malformed HTTP response could
cause Firefox to execute arbitrary code with the privileges of the user
running Firefox. (CVE-2011-0070)

A flaw was found in the way Firefox handled certain JavaScript cross-domain
requests. If malicious content generated a large number of cross-domain
JavaScript requests, it could cause Firefox to execute arbitrary code with
the privileges of the user running Firefox. (CVE-2011-0069)

A flaw was found in the way Firefox displayed the autocomplete pop-up.
Malicious content could use this flaw to steal form history information.
(CVE-2011-0067)

Two use-after-free flaws were found in the Firefox mObserverList and
mChannel objects. Malicious content could use these flaws to execute
arbitrary code with the privileges of the user running Firefox.
(CVE-2011-0066, CVE-2011-0065)

A flaw was found in the Firefox XSLT generate-id() function. This function
returned the memory address of an object in memory, which could possibly be
used by attackers to bypass address randomization protections.
(CVE-2011-1202)

For technical details regarding these flaws, refer to the Mozilla security
advisories for Firefox 3.6.17. 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 3.6.17, which corrects these issues. After installing the
update, Firefox must be restarted for the changes to take effect.

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
https://access.redhat.com/kb/docs/DOC-11259

684386 - CVE-2011-1202 libxslt: Heap address leak in XLST
700603 - CVE-2011-0078 Mozilla OOM condition arbitrary memory write (MFSA 2011-12)
700613 - CVE-2011-0077 Mozilla integer overflow in frameset spec (MFSA 2011-12)
700615 - CVE-2011-0075 Mozilla crash from bad iframe source (MFSA 2011-12)
700617 - CVE-2011-0074 Mozilla crash from several marquee elements (MFSA 2011-12)
700619 - CVE-2011-0073 Mozilla dangling pointer flaw (MFSA 2011-13)
700622 - CVE-2011-0072 Mozilla use after free flaw (MFSA 2011-12)
700635 - CVE-2011-0071 Mozilla directory traversal via resource protocol (MFSA 2011-16)
700640 - CVE-2011-0070 Mozilla double free flaw (MFSA 2011-12)
700642 - CVE-2011-0069 Mozilla javascript crash (MFSA 2011-12)
700644 - CVE-2011-0067 Mozilla untrusted events can trigger autocomplete popup (MFSA 2011-14)
700657 - CVE-2011-0066 Mozilla mObserverList use after free (MFSA 2011-13)
700658 - CVE-2011-0065 Mozilla mChannel use after free (MFSA 2011-13)
700676 - CVE-2011-0081 Mozilla memory safety issue (MFSA 2011-12)
700677 - CVE-2011-0080 Mozilla memory safety issue (MFSA 2011-12)

https://www.redhat.com/security/data/cve/CVE-2011-0065.html
https://www.redhat.com/security/data/cve/CVE-2011-0066.html
https://www.redhat.com/security/data/cve/CVE-2011-0067.html
https://www.redhat.com/security/data/cve/CVE-2011-0069.html
https://www.redhat.com/security/data/cve/CVE-2011-0070.html
https://www.redhat.com/security/data/cve/CVE-2011-0071.html
https://www.redhat.com/security/data/cve/CVE-2011-0072.html
https://www.redhat.com/security/data/cve/CVE-2011-0073.html
https://www.redhat.com/security/data/cve/CVE-2011-0074.html
https://www.redhat.com/security/data/cve/CVE-2011-0075.html
https://www.redhat.com/security/data/cve/CVE-2011-0077.html
https://www.redhat.com/security/data/cve/CVE-2011-0078.html
https://www.redhat.com/security/data/cve/CVE-2011-0080.html
https://www.redhat.com/security/data/cve/CVE-2011-0081.html
https://www.redhat.com/security/data/cve/CVE-2011-1202.html
https://access.redhat.com/security/updates/classification/#critical
http://www.mozilla.org/security/known-vulnerabilities/firefox36.html#firefox3.6.17