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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # See the Nessus Scripts License for details
- #
- # Details: http://www.pivx.com/kristovich/poc/bf1942dos.c
- # http://www.pivx.com/kristovich/adv/mk001/
- #
- #
-
- if(description)
- {
- script_id(11211);
- script_bugtraq_id(6636);
- script_version ("$Revision: 1.5 $");
-
- name["english"] = "GameSpy detection";
-
- script_name(english:name["english"]);
-
- desc["english"] = "
- The remote host is running a GameSpy server.
-
- This service is used to host a gaming server.
-
- It turns out that since these server use UDP as their transport layer, an
- attacker may misuse them so that they flood a third party host, as they send
- multiple UDP packets in reply to one request, by sending a spoofed
- UDP packet with the IP address of their target as the source field.
-
-
- An attacker may use this service and network connection as a mean to flood a
- third party host.
-
-
- Solution : Filter incoming traffic to this port, or disable this service
- Risk factor : Medium
- See also: http://www.pivx.com/kristovich/adv/mk001/";
-
-
- script_description(english:desc["english"]);
-
-
- summary["english"] = "Checks for the presence of a GameSpy server";
-
- script_summary(english:summary["english"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is Copyright (C) 2003 Renaud Deraison",
- francais:"Ce script est Copyright (C) 2003 Renaud Deraison");
-
- family["english"] = "Useless services";
- family["francais"] = "Services inutiles";
- script_family(english:family["english"], francais:family["francais"]);
- exit(0);
- }
-
- # There's <official port> to bind a gamespy server to, and
- # scanning all the UDP ports would take too much time. We try
- # a list of common ports instead.
-
- port[0] = 7777;
- port[1] = 8888;
- port[2] = 12203;
- port[3] = 12204;
- port[4] = 14567;
- port[5] = 14570;
- port[6] = 22000;
- port[7] = 23000;
- port[8] = 27015;
- port[9] = 27016;
- port[10] = 27960;
- port[11] = 27961;
- port[12] = 28001;
- port[13] = 28002;
- port[14] = 28016;
- port[15] = 28020;
- port[16] = 28040;
- port[17] = 28672;
-
- port[18] = 0;
-
- for(i=0;port[i];i=i+1)
- {
- soc = open_sock_udp(port[i]);
- if ( ! soc ) exit(0);
- send(socket:soc, data:string("\\players\\rules\\status\\packets\\"));
- r = recv(socket:soc, length:4096, timeout:2);
- if(strlen(r) > 0)
- {
- if(("disconnect" >< r) ||
- (strlen(r) == 4 && ord(r[0]) == 0x00 && ord(r[1]) == 0x40))
- {
- set_kb_item(name:"Services/udp/gamespy", value:port);
- security_note(port[i]);
- exit(0);
- }
- }
- close(soc);
- }
-