TP-LINK WDR4300 – Stored XSS & DoS

Advisory Information
===============
 
Vendors Contacted: TP-LINK
Vendor Patched: Yes, Firmware 140916
System Affected: N750 Wireless Dual Band Gigabit Router (TL-WDR4300), might affect others.
Versions Affected: 130617 , possibly earlier 
CVE Numbers Assigned: CVE-2014-4727, CVE-2014-4728
 
 
Vulnerabilities Description
===================
 
# Stored XSS -
 
It is possible inject javascript code via DHCP hostname field, 
If the administrator will visit the dhcp clients page (web panel)
the script will execute.
 
# DoS (web server) -
Denial of service condition to the device web server, remotely or locally send the
device a "GET" request with an extra "Header" with a long value (A x 3000 times).
 
 
Proof of Concept:
============
 

http://elisyan.com/tplink/wdr4300.html


http://elisyan.com/tplink/wdr4300.py

 
Report Timeline:
===========
 
2014-07-04:
Vendor notified about the vulnerabilities with all the relevant technical information.
 
2013-09-16:
Vendor released a fix.
 
Credits:
======
 
The Vulnerabilities was discovered by Oz Elisyan.
 
 
References:
========
 

http://www.tp-link.com/lk/products/details/?model=TL-WDR4300