The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades.

The following packages are affected: thunderbird mozilla-thunderbird CVE-2006-0884 The WYSIWYG rendering engine in Mozilla Thunderbird 1.0.7 and earlier allows user-complicit attackers to bypass javascript security settings and obtain sensitive information or cause a crash via an e-mail containing a javascript URI in the SRC attribute of an IFRAME tag, which is executed when the user edits the e-mail.