Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a select event handler for XUL tree items could be called after the tree item was deleted. This results in the execution of previously freed memory which an attacker could use to crash a victim's browser and run arbitrary code on the victim's computer.
This is now public http://www.mozilla.org/security/announce/2010/mfsa2010-17.html
This issue has been addressed in following products: Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 3 Via RHSA-2010:0333 https://rhn.redhat.com/errata/RHSA-2010-0333.html
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 4 Via RHSA-2010:0332 https://rhn.redhat.com/errata/RHSA-2010-0332.html
epiphany-extensions-2.26.1-11.fc11,yelp-2.26.0-12.fc11,google-gadgets-0.11.1-6.fc11,perl-Gtk2-MozEmbed-0.08-6.fc11.10,Miro-2.5.4-3.fc11,mozvoikko-0.9.7-0.12.rc1.fc11,kazehakase-0.5.8-5.fc11.1,gnome-python2-extras-2.25.3-12.fc11,galeon-2.0.7-22.fc11,hulahop-0.4.9-13.fc11,gnome-web-photo-0.7-11.fc11,evolution-rss-0.1.4-11.fc11,chmsee-1.0.1-16.fc11,blam-1.8.5-19.fc11,epiphany-2.26.3-9.fc11,pcmanx-gtk2-0.3.9-4.20100222svn.fc11,firefox-3.5.9-1.fc11,xulrunner-1.9.1.9-1.fc11 has been submitted as an update for Fedora 11. http://admin.fedoraproject.org/updates/epiphany-extensions-2.26.1-11.fc11,yelp-2.26.0-12.fc11,google-gadgets-0.11.1-6.fc11,perl-Gtk2-MozEmbed-0.08-6.fc11.10,Miro-2.5.4-3.fc11,mozvoikko-0.9.7-0.12.rc1.fc11,kazehakase-0.5.8-5.fc11.1,gnome-python2-extras-2.25.3-12.fc11,galeon-2.0.7-22.fc11,hulahop-0.4.9-13.fc11,gnome-web-photo-0.7-11.fc11,evolution-rss-0.1.4-11.fc11,chmsee-1.0.1-16.fc11,blam-1.8.5-19.fc11,epiphany-2.26.3-9.fc11,pcmanx-gtk2-0.3.9-4.20100222svn.fc11,firefox-3.5.9-1.fc11,xulrunner-1.9.1.9-1.fc11
Miro-2.5.4-3.fc12,galeon-2.0.7-22.fc12,gnome-python2-extras-2.25.3-17.fc12,perl-Gtk2-MozEmbed-0.08-6.fc12.12,gnome-web-photo-0.9-6.fc12,mozvoikko-1.0-9.fc12,firefox-3.5.9-1.fc12,xulrunner-1.9.1.9-1.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/Miro-2.5.4-3.fc12,galeon-2.0.7-22.fc12,gnome-python2-extras-2.25.3-17.fc12,perl-Gtk2-MozEmbed-0.08-6.fc12.12,gnome-web-photo-0.9-6.fc12,mozvoikko-1.0-9.fc12,firefox-3.5.9-1.fc12,xulrunner-1.9.1.9-1.fc12
thunderbird-3.0.4-1.fc11,sunbird-1.0-0.16.20090715hg.fc11 has been submitted as an update for Fedora 11. http://admin.fedoraproject.org/updates/thunderbird-3.0.4-1.fc11,sunbird-1.0-0.16.20090715hg.fc11
thunderbird-3.0.4-1.fc13,sunbird-1.0-0.21.20090916hg.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/thunderbird-3.0.4-1.fc13,sunbird-1.0-0.21.20090916hg.fc13
thunderbird-3.0.4-1.fc12,sunbird-1.0-0.21.20090916hg.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/thunderbird-3.0.4-1.fc12,sunbird-1.0-0.21.20090916hg.fc12
Miro-2.5.4-3.fc12, galeon-2.0.7-22.fc12, gnome-python2-extras-2.25.3-17.fc12, perl-Gtk2-MozEmbed-0.08-6.fc12.12, gnome-web-photo-0.9-6.fc12, mozvoikko-1.0-9.fc12, firefox-3.5.9-1.fc12, xulrunner-1.9.1.9-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
epiphany-extensions-2.26.1-11.fc11, yelp-2.26.0-12.fc11, google-gadgets-0.11.1-6.fc11, perl-Gtk2-MozEmbed-0.08-6.fc11.10, Miro-2.5.4-3.fc11, mozvoikko-0.9.7-0.12.rc1.fc11, kazehakase-0.5.8-5.fc11.1, gnome-python2-extras-2.25.3-12.fc11, galeon-2.0.7-22.fc11, hulahop-0.4.9-13.fc11, gnome-web-photo-0.7-11.fc11, evolution-rss-0.1.4-11.fc11, chmsee-1.0.1-16.fc11, blam-1.8.5-19.fc11, epiphany-2.26.3-9.fc11, pcmanx-gtk2-0.3.9-4.20100222svn.fc11, firefox-3.5.9-1.fc11, xulrunner-1.9.1.9-1.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
thunderbird-3.0.4-1.fc11, sunbird-1.0-0.16.20090715hg.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
thunderbird-3.0.4-1.fc12, sunbird-1.0-0.21.20090916hg.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
thunderbird-3.0.4-1.fc13, sunbird-1.0-0.21.20090916hg.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
seamonkey-2.0.4-1.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/seamonkey-2.0.4-1.fc12
seamonkey-2.0.4-1.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/seamonkey-2.0.4-1.fc13
seamonkey-2.0.4-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
seamonkey-2.0.4-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Via RHSA-2010:0545 https://rhn.redhat.com/errata/RHSA-2010-0545.html
This issue has been addressed in following products: Red Hat Enterprise Linux 4 Via RHSA-2010:0544 https://rhn.redhat.com/errata/RHSA-2010-0544.html