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# This script was written by David Maciejak <david dot maciejak at kyxar dot fr>
# based on work from
# (C) Tenable Network Security
#
# Ref: Javier Ubilla and Ariel
#
# This script is released under the GNU GPLv2
if (description)
{
script_id(14257);
script_cve_id("CVE-2004-1711");
script_bugtraq_id(10884);
if ( defined_func("script_xref") )
script_xref(name:"OSVDB", value:"8383");
script_version("$Revision: 1.7 $");
script_name(english:"Moodle post.php XSS");
desc["english"] = "
The version of Moodle on the remote host contains a flaw that allows a
remote cross site scripting attack because the application does not
validate the 'reply' variable upon submission to the 'post.php'
script.
This could allow a user to create a specially crafted URL that would execute
arbitrary code in a user's browser within the trust relationship between the
browser and the server, leading to a loss of integrity.
Solution : Upgrade to Moodle 1.4 or newer.
Risk factor : Medium";
script_description(english:desc["english"]);
script_summary(english:"Determines if Moodle is vulnerable to post.php XSS");
script_category(ACT_GATHER_INFO);
script_family(english:"CGI abuses : XSS", francais:"Abus de CGI");
script_copyright(english:"This script is Copyright (C) 2004 David Maciejak");
script_dependencie("moodle_detect.nasl", "cross_site_scripting.nasl");
script_require_ports("Services/www", 80);
exit(0);
}
include("http_func.inc");
include("http_keepalive.inc");
port = get_http_port(default:80);
if(!get_port_state(port))
exit(0);
if(!can_host_php(port:port))
exit(0);
if (get_kb_item("www/"+port+"/generic_xss")) exit(0);
# Test an install.
install = get_kb_item(string("www/", port, "/moodle"));
if (isnull(install)) exit(0);
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches)) {
dir = matches[2];
req = http_get(item:string(dir, "/post.php?reply=<script>document.write('Nessus plugin to detect post.php flaw');</script>"), port:port);
res = http_keepalive_send_recv(port:port, data:req, bodyonly:1);
if(res == NULL )
exit(0);
if (ereg(pattern:"Nessus plugin to detect post.php flaw", string:res ))
{
security_warning(port);
exit(0);
}
}
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