Security researcher Mario Gomes and research firm Code Audit Labs reported a mechanism to short-circuit page loads through drag and drop to the addressbar by canceling the page load. This causes the address of the previously site entered to be displayed in the addressbar instead of the currently loaded page. This could lead to potential phishing attacks on users. Reference: http://www.mozilla.org/security/announce/2012/mfsa2012-43.html Acknowledgements: Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges security researcher Mario Gomes and research firm Code Audit Labs as the original reporters of this issue.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2012:1088 https://rhn.redhat.com/errata/RHSA-2012-1088.html