Shopzilla Comparison Shopping Script 'search.php' Cross Site Scripting Vulnerability

# SPDX-FileCopyrightText: 2011 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("1.3.6.1.4.1.25623.1.0.103227");
  script_version("2023-12-13T05:05:23+0000");
  script_tag(name:"last_modification", value:"2023-12-13 05:05:23 +0000 (Wed, 13 Dec 2023)");
  script_tag(name:"creation_date", value:"2011-08-25 15:23:29 +0200 (Thu, 25 Aug 2011)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_name("Shopzilla Comparison Shopping Script 'search.php' Cross Site Scripting Vulnerability");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/49298");

  script_tag(name:"qod_type", value:"remote_analysis");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "gb_php_http_detect.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"summary", value:"Shopzilla Affiliate Comparison Shopping Script is prone to a cross-
  site scripting vulnerability because it fails to properly sanitize user-supplied input.");

  script_tag(name:"impact", value:"An attacker may leverage this issue to execute arbitrary script code
  in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker
  to steal cookie-based authentication credentials and to launch other attacks.");

  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_tag(name:"solution_type", value:"WillNotFix");
  exit(0);
}

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

port = http_get_port( default:80 );
if( ! http_can_host_php( port:port ) ) exit( 0 );

vt_strings = get_vt_strings();

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

  if( dir == "/" ) dir = "";
  buf = http_get_cache(item:dir + "/search.php", port:port);
  if(!buf || buf !~ "^HTTP/1\.[01] 200" || "Comparison Shopping Script" >!<buf)
    continue;

  url = dir + "/search.php?s=%3Cscript%3Ealert(%27" + vt_strings["lowercase"] + "%27)%3C/script%3E";

  if( http_vuln_check( port:port, url:url, pattern:"<script>alert\('" + vt_strings["lowercase"] + "'\)</script>", check_header:TRUE, extra_check:"Comparison Shopping Script" ) ) {
    report = http_report_vuln_url( port:port, url:url );
    security_message( port:port, data:report );
    exit( 0 );
  }
}

exit( 99 );