full-disclosure - [FD] CVE-2017-12577: an hardcode credential in PLANEX CS-QR20

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Date: Tue, 21 Aug 2018 06:16:59 +0000
From: "kenney_lu@...ndmicro.com" <kenney_lu@...ndmicro.com>
To: "fulldisclosure@...lists.org" <fulldisclosure@...lists.org>
Subject: [FD] CVE-2017-12577: an hardcode credential in PLANEX CS-QR20

Reserved CVE: CVE-2017-12577

# Description
A hardcoded account / password is used in the Android application that allows attackers to leverage hidden functions and execute arbitrary code on the device.

# Vulnerability Type
Insecure Permissions

# Affected Product Code Base
Firmware ver  1.30

# Affected Component
Web management UI

# Attack Type
Remote

# Attack Vectors
Use predefine default password to login

# Discoverer
Kenney Lu (Trend Micro)

# Vulnerability Detail
A hardcode credential “admin:password" was used by mobile app in order to control the device, because the credential is fixed, user can’t change it, otherwise, the app will lose control. the credential can be used in a hidden API URL “/goform/SystemCommand” to execute any command with root permission.

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