The remote host is missing an update to firefox-3.0 announced via advisory USN-717-2.

The problem can be corrected by upgrading your system to the following package versions: Ubuntu 7.10: firefox 2.0.0.21~20090209t122238+nobinonly-0ubuntu0.7.10.1 After a standard system upgrade you need to restart Firefox to effect the necessary changes. https://secure1.securityspace.com/smysecure/catid.html?in=USN-717-2

A flaw was discovered in the browser engine when restoring closed tabs. If a user were tricked into restoring a tab to a malicious website with form input controls, an attacker could steal local files on the user's system. (CVE-2009-0355) Wladimir Palant discovered that Firefox did not restrict access to cookies in HTTP response headers. If a user were tricked into opening a malicious web page, a remote attacker could view sensitive information. (CVE-2009-0357)