vBulletin <= 2.2.9 XSS Vulnerability - Active Check

# SPDX-FileCopyrightText: 2004 David Maciejak
# 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

CPE = "cpe:/a:vbulletin:vbulletin";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.14833");
  script_version("2025-06-03T05:40:40+0000");
  script_tag(name:"last_modification", value:"2025-06-03 05:40:40 +0000 (Tue, 03 Jun 2025)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_cve_id("CVE-2004-1824");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/6226");
  script_xref(name:"OSVDB", value:"3280");
  script_name("vBulletin <= 2.2.9 XSS Vulnerability - Active Check");
  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2004 David Maciejak");
  script_family("Web application abuses");
  script_dependencies("cross_site_scripting.nasl", "vbulletin_http_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("vbulletin/http/detected");

  script_tag(name:"summary", value:"vBulletin is vulnerable to a cross-site scripting (XSS) issue,
  due to a failure of the application to properly sanitize user-supplied URI input.");

  script_tag(name:"vuldetect", value:"Sends a crafted HTTP GET request and checks the response.");

  script_tag(name:"impact", value:"As a result of this vulnerability, it is possible for a remote
  attacker to create a malicious link containing script code that will be executed in the browser
  of an unsuspecting user when followed.

  This may facilitate the theft of cookie-based authentication credentials as well as other
  attacks.");

  script_tag(name:"affected", value:"vBulletin versions 2.2.9 and prior.");

  script_tag(name:"solution", value:"Update to the latest version.");

  script_tag(name:"qod_type", value:"remote_vul");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

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

if(!port = get_app_port(cpe:CPE, service:"www"))
  exit(0);

if(!dir = get_app_location(cpe:CPE, port:port))
  exit(0);

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

host = http_host_name(dont_add_port:TRUE);
if(http_get_has_generic_xss(port:port, host:host))
  exit(0);

url = dir + "/memberlist.php?s=23c37cf1af5d2ad05f49361b0407ad9e&what=<script>vt-test</script>";
req = http_get(item:url, port:port);
res = http_keepalive_send_recv(port:port, data:req);
if(!res)
  exit(0);

if(res =~ "^HTTP/1\.[01] 200" && egrep(pattern:"<script>vt-test</script>", string:res)) {
  report = http_report_vuln_url(port:port, url:url);
  security_message(port:port, data:report);
  exit(0);
}

exit(99);