Security researcher Hish reported that the persist attribute in XUL elements can be used to store cookie-like information on a user's computer which could later be read by a website. This creates a privacy issue for users who have a non-standard cookie preference and wish to prevent sites from setting cookies on their machine. Even with cookies turned off, this issue could be used by a website to write persistent data in a user's browser and track the user across browsing sessions. Additionally, this issue could allow a website to bypass the limits normally placed on cookie size and number.
This is now public: http://www.mozilla.org/security/announce/2008/mfsa2008-63.html
xulrunner-1.9.0.5-1.fc10, firefox-3.0.5-1.fc10, epiphany-2.24.1-3.fc10, epiphany-extensions-2.24.0-3.fc10, blam-1.8.5-5.fc10, devhelp-0.22-2.fc10, evolution-rss-0.1.2-3.fc10, galeon-2.0.7-4.fc10, gecko-sharp2-0.13-3.fc10, gnome-python2-extras-2.19.1-25.fc10, gnome-web-photo-0.3-13.fc10, google-gadgets-0.10.3-2.fc10, kazehakase-0.5.6-1.fc10.2, Miro-1.2.7-3.fc10, mozvoikko-0.9.5-5.fc10, mugshot-1.2.2-4.fc10, pcmanx-gtk2-0.3.8-4.fc10, ruby-gnome2-0.18.1-2.fc10, yelp-2.24.0-4.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.
xulrunner-1.9.0.5-1.fc9, firefox-3.0.5-1.fc9, epiphany-2.22.2-6.fc9, epiphany-extensions-2.22.1-6.fc9, blam-1.8.5-4.fc9.1, cairo-dock-1.6.3.1-1.fc9.2, chmsee-1.0.1-7.fc9, devhelp-0.19.1-7.fc9, evolution-rss-0.1.0-5.fc9, galeon-2.0.7-4.fc9, gnome-python2-extras-2.19.1-22.fc9, gnome-web-photo-0.3-16.fc9, google-gadgets-0.10.3-2.fc9, gtkmozembedmm-1.4.2.cvs20060817-24.fc9, kazehakase-0.5.6-1.fc9.2, Miro-1.2.7-3.fc9, mozvoikko-0.9.5-5.fc9, mugshot-1.2.2-4.fc9, ruby-gnome2-0.17.0-4.fc9, totem-2.23.2-9.fc9, yelp-2.22.1-7.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.
This was addressed via: Red Hat Enterprise Linux version 4 (firefox) RHSA-2008:1036 Red Hat Enterprise Linux version 5 (firefox) RHSA-2008:1036