The timed program (in.timed) in UnixWare 7 and OpenUnix 8.0.0 does not properly terminate certain strings with a null, which allows remote attackers to cause a denial of service.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-1556
http://archives.neohapsis.com/archives/linux/caldera/2001-q4/0020.html