Multiple stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier, allow (1) remote attackers to execute arbitrary code via a long HELP command on TCP port 3010 to the sysuser::exechelp function in sysuser.cc and (2) remote authenticated users to execute arbitrary code via long commands on TCP port 6809 to the servinterface::sendmulticast function in servinterface.cc, as demonstrated by a PIcallsign command.
aluigi.altervista.org/adv/fsdbof-adv.txt
secunia.com/advisories/27008
secunia.com/advisories/27045
securityreason.com/securityalert/3195
www.securityfocus.com/archive/1/481221/100/0/threaded
www.securityfocus.com/archive/1/481495/100/0/threaded
www.securityfocus.com/bid/25883
www.vupen.com/english/advisories/2007/3334
www.exploit-db.com/exploits/4484