Moodle XSS

# SPDX-FileCopyrightText: 2004 Noam Rathaus
# 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

# From: Bartek Nowotarski <[email protected]>
# Subject: Cross Site Scripting in Moodle < 1.3
# Date: 2004-04-30 23:34

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.12222");
  script_version("2023-08-03T05:05:16+0000");
  script_tag(name:"last_modification", value:"2023-08-03 05:05:16 +0000 (Thu, 03 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_cve_id("CVE-2004-1978");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/10251");
  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_name("Moodle XSS");
  script_category(ACT_ATTACK);
  script_tag(name:"qod_type", value:"remote_vul");
  script_copyright("Copyright (C) 2004 Noam Rathaus");
  script_family("Web application abuses");
  script_dependencies("gb_moodle_cms_detect.nasl", "cross_site_scripting.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("Moodle/Version");

  script_tag(name:"summary", value:"The remote host is using Moodle, a course management system (CMS).
There is a bug in this software that makes it vulnerable to cross
site scripting attacks.

An attacker may use this bug to steal the credentials of the
legitimate users of this site.");

  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");

port = http_get_port(default:80);
host = http_host_name( dont_add_port:TRUE );
if( http_get_has_generic_xss( port:port, host:host ) ) exit( 0 );

install = get_kb_item(string("www/", port, "/moodle"));
if (isnull(install)) exit(0);
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches)) {
 loc = matches[2];
 req = http_get(item:string(loc, "/help.php?text=%3Cscript%3Efoo%3C/script%3E"), port:port);
 r = http_keepalive_send_recv(port:port, data:req);
 if( isnull( r ) ) exit( 0 );
 if(r =~ "^HTTP/1\.[01] 200" && egrep(pattern:"<script>foo</script>", string:r))
 {
        security_message(port);
        exit(0);
 }
}