A vulnerability classified as problematic was found in Logitech M520. Affected by this vulnerability is some unknown functionality of the component Communication. The manipulation with an unknown input leads to a missing encryption vulnerability. The CWE definition for the vulnerability is CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 09/30/2016 by Matthias Deeg with SYSS as SYSS-2016-060 as confirmed mailinglist post (Bugtraq). The advisory is shared at seclists.org. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1600 for this issue. The advisory points out:

The SySS GmbH found out that the mouse of the wireless desktop set Logitech Wireless Combo MK520 is prone to spoofing attacks, as the mouse data communication is unencrypted and unauthenticated. An attacker can analyze the unencrypted mouse data packets of the 2.4 GHz radio communication sent by the mouse to the receiver (USB dongle) in order to learn the used protocol. By knowing the used mouse data protocol, it is possible to spoof mouse actions like mouse movements or mouse clicks by sending forged data packets.

A public exploit has been developed by Matthias Deeg and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 94 days. During that time the estimated underground price was around $0-$5k. The advisory illustrates:

The SySS GmbH could successfully perform mouse spoofing attacks against a target system operated with the wireless desktop set Logitech Wireless Combo MK520 using an in-house developed software tool in combination with the USB radio dongle Crazyradio PA.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Affected

• Logitech Wireless Combo MK520

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Vendor

• Logitech

Name

• M520

License

• commercial

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