Security researcher Prateek Saxena reported that a malicious MozSearch plugin could be created using a javascript: URI in the SearchForm value. This URI is used as the default landing page when an empty search is performed. If an attacker could get a user to install the malicious plugin and perform an empty search, the SearchForm javascript: URI would be executed within the context of the target site.
This issue has been addressed in following products: Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 Via RHSA-2009:0436 https://rhn.redhat.com/errata/RHSA-2009-0436.html
xulrunner-1.9.0.9-1.fc9, firefox-3.0.9-1.fc9, epiphany-extensions-2.22.1-10.fc9, epiphany-2.22.2-10.fc9, blam-1.8.5-8.fc9.1, chmsee-1.0.1-11.fc9, devhelp-0.19.1-11.fc9, evolution-rss-0.1.0-10.fc9, galeon-2.0.7-9.fc9, gnome-python2-extras-2.19.1-26.fc9, gnome-web-photo-0.3-20.fc9, google-gadgets-0.10.5-5.fc9, gtkmozembedmm-1.4.2.cvs20060817-28.fc9, kazehakase-0.5.6-4.fc9.1, Miro-2.0.3-3.fc9, mozvoikko-0.9.5-9.fc9, mugshot-1.2.2-8.fc9, ruby-gnome2-0.17.0-8.fc9, totem-2.23.2-14.fc9, yelp-2.22.1-11.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.
xulrunner-1.9.0.9-1.fc10, firefox-3.0.9-1.fc10, epiphany-extensions-2.24.0-7.fc10, epiphany-2.24.3-5.fc10, blam-1.8.5-9.fc10, devhelp-0.22-7.fc10, galeon-2.0.7-9.fc10, gecko-sharp2-0.13-7.fc10, gnome-python2-extras-2.19.1-29.fc10, gnome-web-photo-0.3-17.fc10, google-gadgets-0.10.5-5.fc10, kazehakase-0.5.6-4.fc10.1, Miro-2.0.3-3.fc10, mozvoikko-0.9.5-9.fc10, mugshot-1.2.2-8.fc10, pcmanx-gtk2-0.3.8-8.fc10, perl-Gtk2-MozEmbed-0.08-5.fc10.2, ruby-gnome2-0.18.1-5.fc10.1, yelp-2.24.0-8.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.