Mozilla add-on developer and community member Wladimir Palant reported that two key security checks are not being called when loading XUL scripts. The checks which are skipped are intended to verify that content loading policies will not be violated by loading a XUL script. Mozilla code relying on the content policies for security, such as privileged add-ons, could potentially be exploited to run JavaScript with elevated privileges.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 4 Via RHSA-2009:1095 https://rhn.redhat.com/errata/RHSA-2009-1095.html
firefox-3.0.11-1.fc10, xulrunner-1.9.0.11-1.fc10, epiphany-2.24.3-7.fc10, epiphany-extensions-2.24.3-2.fc10, blam-1.8.5-11.fc10, devhelp-0.22-9.fc10, galeon-2.0.7-11.fc10, gecko-sharp2-0.13-9.fc10, gnome-python2-extras-2.19.1-31.fc10, gnome-web-photo-0.3-19.fc10, google-gadgets-0.10.5-7.fc10, kazehakase-0.5.6-4.fc10.3, Miro-2.0.3-5.fc10, mozvoikko-0.9.5-11.fc10, mugshot-1.2.2-10.fc10, pcmanx-gtk2-0.3.8-10.fc10, perl-Gtk2-MozEmbed-0.08-6.fc10.2, ruby-gnome2-0.18.1-5.fc10.3, yelp-2.24.0-10.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.
firefox-3.0.11-1.fc9, xulrunner-1.9.0.11-1.fc9, epiphany-2.22.2-12.fc9, epiphany-extensions-2.22.1-12.fc9, blam-1.8.5-10.fc9.1, chmsee-1.0.1-13.fc9, devhelp-0.19.1-13.fc9, evolution-rss-0.1.0-12.fc9, galeon-2.0.7-11.fc9, gnome-python2-extras-2.19.1-28.fc9, gnome-web-photo-0.3-22.fc9, google-gadgets-0.10.5-7.fc9, gtkmozembedmm-1.4.2.cvs20060817-30.fc9, kazehakase-0.5.6-4.fc9.3, Miro-2.0.3-5.fc9, mozvoikko-0.9.5-11.fc9, mugshot-1.2.2-10.fc9, ruby-gnome2-0.17.0-10.fc9, totem-2.23.2-17.fc9, yelp-2.22.1-13.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.