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- #
- # This script was written by Noam Rathaus <noamr@securiteam.com>
- #
- # See the Nessus Scripts License for details
- #
- head = "
- Some Web Servers use a file called /robot(s).txt to make search engines and
- any other indexing tools visit their WebPages more frequently and
- more efficiently.
-
- By connecting to the server and requesting the /robot(s).txt file, an
- attacker may gain additional information about the system they are
- attacking.
-
- Such information as, restricted directories, hidden directories, cgi script
- directories and etc. Take special care not to tell the robots not to index
- sensitive directories, since this tells attackers exactly which of your
- directories are sensitive.
-
- ";
-
-
- tail = "
-
- Risk factor : Medium";
-
- if(description)
- {
- script_id(10302);
- # script_cve_id("CVE-MAP-NOMATCH");
- script_version ("$Revision: 1.23 $");
-
- name["english"] = "robot(s).txt exists on the Web Server";
- script_name(english:name["english"]);
-
- desc["english"] = head + tail;
-
- script_description(english:desc["english"]);
-
- summary["english"] = "robot(s).txt exists on the Web Server";
- script_summary(english:summary["english"]);
-
- script_category(ACT_ATTACK);
-
- script_copyright(english:"This script is Copyright (C) 1999 SecuriTeam");
- family["english"] = "General";
- script_family(english:family["english"]);
-
- script_dependencie("find_service.nes", "http_version.nasl");
- script_require_ports("Services/www", 80);
-
- exit(0);
- }
-
- #
- # The script code starts here
- #
-
- include("http_func.inc");
- include("http_keepalive.inc");
- port = get_http_port(default:80);
- if ( get_kb_item("www/" + port + "/no404") ) exit(0);
-
- res = is_cgi_installed_ka(port:port, item:"/robot.txt");
- if(res)
- {
- sockwww = http_open_socket(port);
- if (sockwww)
- {
- sendata = http_get(item:"/robot.txt", port:port);
- send(socket:sockwww, data:sendata);
- headers = http_recv_headers(sockwww);
- body = http_recv_body(socket:sockwww, headers:headers, length:0);
- if("llow" >< body || "agent:" >< body)
- {
- if (body)
- {
- body = string("The file 'robot.txt' contains the following:\n", body);
- security_warning(port:port, data:head + body + tail);
- }
- http_close_socket(sockwww);
- }
- }
- else exit(0);
- }
- else
- {
- res = is_cgi_installed_ka(port:port, item:"/robots.txt");
- if(res)
- {
- sockwww = http_open_socket(port);
- if (sockwww)
- {
- sendata = http_get(item:"/robots.txt", port:port);
- send(socket:sockwww, data:sendata);
- headers = http_recv_headers(sockwww);
- body = http_recv_body(socket:sockwww, headers:headers, length:0);
- if("llow" >!< body && "agent:" >!< body)exit(0);
-
- if (body)
- {
- body = string("The file 'robots.txt' contains the following:\n", body);
- security_warning(port:port, data:head + body + tail);
- }
- http_close_socket(sockwww);
- }
- }
- }
-