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- #
- # This script was written by Renaud Deraison <deraison@cvs.nessus.org>
- #
- # Script audit and contributions from Carmichael Security <http://www.carmichaelsecurity.com>
- # Erik Anderson <eanders@carmichaelsecurity.com>
- # Added link to the Bugtraq message archive and Securiteam
- #
- # See the Nessus Scripts License for details
- #
-
- if(description)
- {
- script_id(10493);
- script_version ("$Revision: 1.15 $");
-
- name["english"] = "SWC Overflow";
- name["francais"] = "DΘpassement de buffer dans SWC";
- script_name(english:name["english"], francais:name["francais"]);
-
- desc["english"] = "
- The CGI 'swc' (Simple Web Counter) is present and vulnerable
- to a buffer overflow when issued a too long value to the
- 'ctr=' argument.
-
- An attacker may use this flaw to gain a shell on this host
-
- Solution : Use another web counter, or patch this one by hand
-
- Reference : http://online.securityfocus.com/archive/1/76818
- Reference : http://www.securiteam.com/unixfocus/5FP0O202AE.html
-
- Risk factor : High";
-
-
- desc["francais"] = "
- Le CGI 'swc' (Simple Web Counter) est prΘsent et vulnΘrable α un
- dΘpassement de buffer lorsqu'une valeur trop longue est donnΘe
- α l'argument 'ctr='.
-
- Un pirate peut utiliser ce problΦme pour obtenir un shell sur
- ce systΦme.
-
- Solution : Utilisez un autre compteur web, ou patchez celui-ci α
- la main
- Facteur de risque : SΘrieux";
-
-
- script_description(english:desc["english"], francais:desc["francais"]);
-
- summary["english"] = "Checks for the presence of /cgi-bin/swc";
- summary["francais"] = "VΘrifie la prΘsence de /cgi-bin/swc";
-
- script_summary(english:summary["english"], francais:summary["francais"]);
-
- script_category(ACT_GATHER_INFO);
-
-
- script_copyright(english:"This script is Copyright (C) 2000 Renaud Deraison",
- francais:"Ce script est Copyright (C) 2000 Renaud Deraison");
- family["english"] = "CGI abuses";
- family["francais"] = "Abus de CGI";
- script_family(english:family["english"], francais:family["francais"]);
- script_dependencie("find_service.nes", "no404.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_port_state(port))exit(0);
-
-
- foreach dir (cgi_dirs())
- {
- req = http_get(item:string(dir, "/swc?ctr=", crap(500)),
- port:port);
- r = http_keepalive_send_recv(port:port, data:req);
- if( r == NULL ) exit(0);
-
- if("Could not open input file" >< r)
- {
- soc = http_open_socket(port);
- req = http_get(item:string(dir, "/swc?ctr=", crap(5000)), port:port);
- send(socket:soc, data:req);
- r = recv_line(socket:soc, length:1024);
- http_close_socket(soc);
- if(ereg(pattern:"HTTP/[0-9]\.[0-9] 500 ",
- string:r))security_hole(port);
- }
- }
-