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HistoryAug 29, 2011 - 9:08 p.m.

Security update for Mozilla Firefox (important)


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Mozilla Firefox was updated to version 3.6.20.

It fixes bugs and security issues. Following security
issues were fixed: Mozilla Foundation Security Advisory
2011-30 - MFSA 2011-30
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Miscellaneous memory safety hazards

Mozilla developers and community members identified
and fixed several memory safety bugs in the browser engine
used in Firefox 3.6 and other Mozilla-based products. Some
of these bugs showed evidence of memory corruption under
certain circumstances, and we presume that with enough
effort at least some of these could be exploited to run
arbitrary code.

Gary Kwong, Igor Bukanov, Nils and Bob Clary reported
memory safety issues which affected Firefox 3.6.

Crash in SVGTextElement.getCharNumAtPosition()

Security researcher regenrecht reported via
TippingPoint’s Zero Day Initiative that a SVG text
manipulation routine contained a dangling pointer
vulnerability. (CVE-2011-0084)

Privilege escalation using event handlers

Mozilla security researcher moz_bug_r_a_4 reported a
vulnerability in event management code that would permit
JavaScript to be run in the wrong context, including that
of a different website or potentially in a
chrome-privileged context. (CVE-2011-2981)

Dangling pointer vulnerability in appendChild

Security researcher regenrecht reported via
TippingPoint’s Zero Day Initiative that appendChild did not
correctly account for DOM objects it operated upon and
could be exploited to dereference an invalid pointer.

Privilege escalation dropping a tab element in
content area

Mozilla security researcher moz_bug_r_a4 reported
that web content could receive chrome privileges if it
registered for drop events and a browser tab element was
dropped into the content area. (CVE-2011-2984)

Binary planting vulnerability in

Security researcher Mitja Kolsek of Acros Security
reported that ThinkPadSensor::Startup could potentially be
exploited to load a malicious DLL into the running process.
(CVE-2011-2980) (This issue is likely Windows only)

Private data leakage using RegExp.input

Security researcher shutdown reported that data from
other domains could be read when RegExp.input was set.