Security issues were identified and fixed in mozilla firefox and thunderbird: 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 . Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a SVG text manipulation routine contained a dangling pointer vulnerability . 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 . 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 . 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 . Security researcher Mitja Kolsek of Acros Security reported that ThinkPadSensor::Startup could potentially be exploited to load a malicious DLL into the running process . Security researcher shutdown reported that data from other domains could be read when RegExp.input was set . Packages for 2009.0 are provided as of the Extended Maintenance Program