A specially crafted hostname which contains lots of dashes can trigger a buffer overflow. http://marc.theaimsgroup.com/?l=full-disclosure&m=112624614008387&w=2 https://bugzilla.mozilla.org/show_bug.cgi?id=307259 IDN is disabled by default in Thunderbird, therefore this issue is being assigned a severity of "moderate"
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2005-791.html