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- #
- # This script was written by Matt Moore <matt.moore@westpoint.ltd.uk>
- #
- # See the Nessus Scripts License for details
- #
-
- if(description)
- {
- script_id(10838);
- script_version ("$Revision: 1.12 $");
- name["english"] = "FastCGI samples Cross Site Scripting";
- name["francais"] = "FastCGI samples Cross Site Scripting";
- script_name(english:name["english"], francais:name["francais"]);
-
- desc["english"] = "
- Two sample CGI's supplied with FastCGI are vulnerable
- to cross-site scripting attacks. FastCGI is an 'open extension to CGI
- that provides high performance without the limitations of server
- specific APIs', and is included in the default installation of the
- 'Unbreakable' Oracle9i Application Server. Various other web servers
- support the FastCGI extensions (Zeus, Pi3Web etc).
-
- Two sample CGI's are installed with FastCGI, (echo.exe and echo2.exe
- under Windows, echo and echo2 under Unix). Both of these CGI's output
- a list of environment variables and PATH information for various
- applications. They also display any parameters that were provided
- to them. Hence, a cross site scripting attack can be performed via
- a request such as:
-
- http://www.someserver.com/fcgi-bin/echo2.exe?blah=<SCRIPT>alert(document.domain)</SCRIPT>
-
- Solution:
-
- Always remove sample applications from production servers.
-
- Risk factor : High";
-
- script_description(english:desc["english"]);
-
- summary["english"] = "Tests for FastCGI samples Cross Site Scripting";
-
- script_summary(english:summary["english"]);
-
- script_category(ACT_ATTACK);
-
- script_copyright(english:"This script is Copyright (C) 2002 Matt Moore",
- francais:"Ce script est Copyright (C) 2002 Matt Moore");
- family["english"] = "CGI abuses : XSS";
- family["francais"] = "Abus de CGI";
- script_family(english:family["english"], francais:family["francais"]);
- script_dependencie("http_version.nasl", "cross_site_scripting.nasl");
- script_require_ports("Services/www", 80);
- exit(0);
- }
-
- # Check starts here
-
- include("http_func.inc");
- include("http_keepalive.inc");
-
- port = get_http_port(default:80);
- if ( get_kb_item("www/" + port + "/generic_xss") ) exit(0);
-
- if(! get_port_state(port)) exit(0);
-
- # Avoid FP against Compaq Web Management or HTTP proxy
- if (get_kb_item('www/'+port+'/generic_xss')) exit(0);
-
- file = make_list("echo", "echo.exe", "echo2", "echo2.exe");
-
- for(f = 0; file[f]; f++)
- {
- req = http_get(item:string("/fcgi-bin/", file[f], "?foo=<SCRIPT>alert(document.domain)</SCRIPT>"), port:port);
- r = http_keepalive_send_recv(port:port, data:req, bodyonly:1);
- if ( r == NULL ) exit(0);
- if("<SCRIPT>alert(document.domain)</SCRIPT>" >< r)
- {
- security_warning(port);
- exit(0);
- }
- }
-
-