Zebedee 2.4.1, when "allowed redirection port" is not set, allows remote attackers to cause a denial of service (application crash) via a zero in the port number of the protocol option header, which triggers an assert error in the makeConnection function in zebedee.c.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-2904
http://www.securityfocus.com/bid/14796
http://www.gentoo.org/security/en/glsa/glsa-200509-14.xml