Tenda N3 Wireless N150 Home Router - Authentication Bypass

# Exploit Title: Complete Authentication Bypass In Tenda N3 Wireless N150 Routers

# Date: 03-09-2015

# Software Link: http://tendacn.com/en/product/N150.html

# Exploit Author: Mandeep Jadon

# Contact: http://twitter.com/1337tr0lls

# Website: http://twitter.com/1337tr0lls

# CVE: CVE-2015-5995

# Category: Device





Description:



The router (AP) is using very poor authentication mechanism . It uses a

static cookie to verify the incoming authentication. After careful

inspection it was found that the cookie used were same for any number of

authentication by the Admin .



Thus the cookie can be easily forged and the admin account could be

compromised without supplying the credentials .



Proof Of Concept:



Inject the following cookie in the browser with the given values :



admin:language : en



Reload the page . You are logged into the admin account .



Video POC : https://www.youtube.com/watch?v=dvF-7KK0g6E



Mitigation :



Use: a secure authentication mechanism consisting of random , complex

cookies .



References :

https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5995

https://www.kb.cert.org/vuls/id/630872