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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # See the Nessus Scripts License for details
- #
- #
- # Thanks to Joao Gouveia
-
- if(description)
- {
- script_id(10703);
- script_bugtraq_id(2988);
- script_version ("$Revision: 1.19 $");
- script_cve_id("CVE-2001-0504");
- name["english"] = "SMTP Authentication Error";
- name["francais"] = "SMTP Authentication Error";
- script_name(english:name["english"],
- francais:name["francais"]);
-
- desc["english"] = "
- The remote SMTP server is vulnerable to a flaw in its authentication
- process.
-
- This vulnerability allows any unauthorized user to successfully
- authenticate and use the remote SMTP server.
-
- An attacker may use this flaw to use this SMTP server
- as a spam relay.
-
- Solution : see http://www.microsoft.com/technet/security/bulletin/MS01-037.mspx.
-
- Risk factor : High";
-
-
- 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";
- script_summary(english:summary["english"],
- francais:summary["francais"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is Copyright (C) 2001 Renaud Deraison",
- francais:"Ce script est Copyright (C) 2001 Renaud Deraison");
-
- family["english"] = "SMTP problems";
- family["francais"] = "ProblΦmes SMTP";
- script_family(english:family["english"], francais:family["francais"]);
- script_dependencie("find_service.nes", "sendmail_expn.nasl");
- script_exclude_keys("SMTP/wrapped", "SMTP/qmail", "SMTP/postfix");
- 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))
- {
- soc = open_sock_tcp(port);
- if(!soc)exit(0);
- data = smtp_recv_banner(socket:soc);
- if(!egrep(pattern:"^220.*", string:data))exit(0);
-
- cmd = string("HELO example.com\r\n");
- send(socket:soc, data:cmd);
- data = recv_line(socket:soc, length:1024);
- cmd = string("AUTH GSSAPI\r\n");
- send(socket:soc, data:cmd);
- r = recv_line(socket:soc, length:4096);
-
- if(ereg(string:r, pattern:"^334 .*"))
- {
- cmd = string(".\r\n");
- send(socket:soc, data:cmd);
- r = recv_line(socket:soc, length:4096);
- if(ereg(string:r, pattern:"^235 .*successful.*"))security_warning(port);
- }
- send(socket:soc, data:string("QUIT\r\n"));
- close(soc);
- }
-