CUPS before 1.1.19 allows remote attackers to cause a denial of service via a partial printing request to the IPP port (631), which does not time out.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6
http://www.turbolinux.com/security/TLSA-2003-33.txt
http://www.securityfocus.com/bid/7637
http://www.novell.com/linux/security/advisories/2003_028.html
http://www.mandriva.com/security/advisories?name=MDKSA-2003:062
http://www.debian.org/security/2003/dsa-317
http://marc.info/?l=bugtraq&m=105427288724449&w=2
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000678