Security researcher regenrecht reported via TippingPoint's Zero Day Initiative an error in the DOM attribute cloning routine where under certain circumstances an event attribute node can be deleted while another object still contains a reference to it. This reference could subsequently be accessed, potentially causing the execution of attacker controlled memory.
This is now public: http://www.mozilla.org/security/announce/2010/mfsa2010-35.html
This issue has been addressed in following products: Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 Via RHSA-2010:0547 https://rhn.redhat.com/errata/RHSA-2010-0547.html
seamonkey-2.0.6-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
xulrunner-1.9.2.7-1.fc13, firefox-3.6.7-1.fc13, mozvoikko-1.0-12.fc13, gnome-web-photo-0.9-10.fc13, perl-Gtk2-MozEmbed-0.08-6.fc13.15, gnome-python2-extras-2.25.3-20.fc13, galeon-2.0.7-30.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
seamonkey-2.0.6-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
xulrunner-1.9.1.11-1.fc12, firefox-3.5.11-1.fc12, gnome-web-photo-0.9-8.fc12, mozvoikko-1.0-11.fc12, perl-Gtk2-MozEmbed-0.08-6.fc12.14, gnome-python2-extras-2.25.3-19.fc12, galeon-2.0.7-24.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.