The remote host is missing an update to firefox announced via advisory USN-717-3.

The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: firefox 1.5.dfsg+1.5.0.15~prepatch080614j-0ubuntu1 After a standard system upgrade you need to restart Firefox to effect the necessary changes. https://secure1.securityspace.com/smysecure/catid.html?in=USN-717-3

Kojima Hajime discovered that Firefox did not properly handle an escaped null character. An attacker may be able to exploit this flaw to bypass script sanitization. (CVE-2008-5510) 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)