ViewCVS viewcvs.cgi Multiple Parameter XSS

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(14823);
  script_version("1.25");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/07");

  script_cve_id("CVE-2002-0771");
  script_bugtraq_id(4818);

  script_name(english:"ViewCVS viewcvs.cgi Multiple Parameter XSS");

  script_set_attribute(attribute:"synopsis", value:
"A web application on the remote host has a cross-site scripting
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote host is running ViewCVS, a tool written in Python to
browse CVS repositories via the web.

The version of ViewCVS running on the remote host has a cross-site
scripting vulnerability.  Input to the 'viewcvs' parameter is not
properly sanitized.  A remote attacker could exploit this by tricking
a user into requesting a maliciously crafted URL, resulting in the
execution of arbitrary script code.");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2002/May/170");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the latest version of this software.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990);

  script_set_attribute(attribute:"vuln_publication_date", value:"2002/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/27");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:viewcvs:viewcvs");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses : XSS");

  script_copyright(english:"This script is Copyright (C) 2004-2022 Tenable Network Security, Inc.");

  script_dependencies("cross_site_scripting.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);

  exit(0);
}

#
# The script code starts here
#

include("global_settings.inc");
include("http_func.inc");
include("http_keepalive.inc");

port = get_http_port(default:80, embedded:TRUE);
if(!get_port_state(port))exit(0);
if ( get_kb_item("www/" + port + "/generic_xss") ) exit(0);

function check(url)
{
  local_var r, req;
  req = http_get(item:string(url, "/viewcvs.cgi/?cvsroot=<script>foo</script>"), port:port);
  r = http_keepalive_send_recv(port:port, data:req, bodyonly:1);
  if ( r == NULL ) exit(0);

  if ('The CVS root "<script>foo</script>" is unknown' >< r)
  {
    security_warning(port);
    set_kb_item(name: 'www/'+port+'/XSS', value: TRUE);
    exit(0);
  }
}


foreach dir (cgi_dirs())
{
 check(url:dir);
}