Multiple buffer overflows in BitchX IRC client 1.0-0c19 and earlier allow remote malicious IRC servers to cause a denial of service (crash) and possibly execute arbitrary code via long hostnames, nicknames, or channel names, which are not properly handled by the functions (1) send_ctcp, (2) cannot_join_channel, (3) cluster, (4) BX_compress_modes, (5) handle_oper_vision, and (6) ban_it.
http://www.securityfocus.com/bid/7100
http://www.securityfocus.com/bid/7099
http://www.securityfocus.com/bid/7097
http://www.securityfocus.com/bid/7096
http://www.debian.org/security/2003/dsa-306
http://security.debian.org/pool/updates/main/i/ircii-pana/ircii-pana_1.0-0c16-2.1.diff.gz
http://marc.info/?l=bugtraq&m=104852615211913&w=2
http://marc.info/?l=bugtraq&m=104766521328322&w=2
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000655