A vulnerability was found in Multi Kon Trade M2B GSM Wireless Alarm System (affected version unknown). It has been rated as problematic. This issue affects an unknown functionality. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The weakness was published 11/24/2016 by Gerhard Klostermeier with SYSS as [SYSS-2016-066] Multi Kon Trade M2B GSM Wireless Alarm System - Missing Protection against Replay Attacks as not defined mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 142 days. During that time the estimated underground price was around $0-$5k.

The best possible mitigation is suggested to be Workaround. The mailinglist post contains the following remark:

Do not use the 433 MHz remote control to arm or disarm the system. Instead it is recommended to use the app for iOS and Android smartphones or to arm and disarm the system manually with the on-board keypad. (Solution as suggested by the vendor.)

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• Multi Kon Trade

Name

• M2B GSM Wireless Alarm System

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