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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # See the Nessus Scripts License for details
- #
-
- if(description)
- {
- script_id(10167);
- script_version ("$Revision: 1.28 $");
- script_cve_id("CVE-1999-0819");
- name["english"] = "NTMail3 spam feature";
- name["francais"] = "NTMail3 spam feature";
- name["deutsch"] = "NTMail3 spam M÷glichkeit";
- script_name(english:name["english"],
- francais:name["francais"],
- deutsch:name["deutsch"]);
-
- desc["english"] = "
- The remote SMTP server allows anyone to
- use it as a mail relay, provided that the source address
- is set to '<>'.
- This problem allows any spammer to use your mail server
- to spam the world, thus blacklisting your mailserver, and
- using your network resources.
-
- Risk factor : Medium
-
- Solution : reconfigure this server properly";
-
-
-
-
- script_description(english:desc["english"]);
-
- summary["english"] = "Checks if the remote mail server can be used as a spam relay";
- summary["francais"] = "VΘrifie si le serveur de mail distant peut etre utilisΘ comme relais de spam";
- summary["deutsch"] = "▄berprⁿft ob der Mailserver als Spam-Relay mi▀braucht werden kann";
- script_summary(english:summary["english"],
- francais:summary["francais"],
- deutsch:summary["deutsch"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is Copyright (C) 1999 Renaud Deraison",
- francais:"Ce script est Copyright (C) 1999 Renaud Deraison",
- deutsch:"Dieses Skript ist urheberrechtlich geschⁿtzt (C) 1999 Renaud Deraison");
-
- family["english"] = "SMTP problems";
- family["francais"] = "ProblΦmes SMTP";
- family["deutsch"] = "SMTP Probleme";
- script_family(english:family["english"], francais:family["francais"], deutsch:family["deutsch"]);
- script_dependencie("find_service.nes", "smtp_relay.nasl",
- "sendmail_expn.nasl", "smtp_settings.nasl");
- script_exclude_keys("SMTP/fake", "SMTP/spam", "SMTP/qmail", "SMTP/postfix");
- script_require_ports("Services/smtp", 25);
- exit(0);
- }
-
- #
- # The script code starts here
- #
-
- include("smtp_func.inc");
-
- if(islocalhost())exit(0);
-
- port = get_kb_item("Services/smtp");
- if(!port)port = 25;
-
- # Don't give the information twice
- if (get_kb_item("SMTP/" + port + "/spam")) exit(0);
-
- if(get_port_state(port))
- {
- domain = get_kb_item("Settings/third_party_domain");
-
- soc = open_sock_tcp(port);
- if(!soc)exit(0);
-
- data = smtp_recv_banner(socket:soc);
- if(!data)exit(0);
- if(!ereg(pattern:"^220 ", string:data))exit(0);
-
- crp = string("HELO ", domain, "\r\n");
- send(socket:soc, data:crp);
- data = recv_line(socket:soc, length:1024);
- if(!ereg(pattern:"^250 ", string:data))exit(0);
-
- crp = string("MAIL FROM:<>\r\n");
- send(socket:soc, data:crp);
- data = recv_line(socket:soc, length:1024);
- if(!ereg(pattern:"^250 ", string:data))exit(0);
- crp = string("RCPT TO: nobody@", domain, "\r\n");
- send(socket:soc, data:crp);
- data = recv_line(socket:soc, length:1024);
- if(ereg(pattern:"^250 ", string:data)){
- send(socket:soc, data:string("DATA\r\n"));
- data = recv_line(socket:soc, length:1024);
- if(ereg(pattern:"^[2-3][0-9][0-9] .*", string:data))security_warning(port);
- }
- close(soc);
- }
-