CVE-2003-0549
The X Display Manager Control Protocol (XDMCP) support for GDM before 2.4.1.6 allows attackers to cause a denial of service (daemon crash) via a short authorization key name.
Date published : 2003-08-22
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000729
http://mail.gnome.org/archives/gnome-hackers/2003-August/msg00045.html