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CVE-2019-18199

Status Candidate

Overview

An issue was discovered on Fujitsu Wireless Keyboard Set LX390 GK381 devices. Because of the lack of proper encryption of 2.4 GHz communication, and because of password-based authentication, they are vulnerable to replay attacks.

Related Files

Fujitsu Wireless Keyboard Set LX390 Replay Attacks
Posted Oct 23, 2019
Authored by Matthias Deeg | Site syss.de

SySS GmbH found out that the wireless keyboard Fujitsu LX390 is prone to replay attacks. An attacker can simply sniff the data packets of the 2.4 GHz radio communication sent by the keyboard to the receiver (USB dongle) and replay the recorded communication data at will causing the same effect as the original data communication. A replay attack against the keyboard can, for example, be used to gain unauthorized access to a computer system that is operated with a vulnerable Fujitsu LX390 keyboard. In this attack scenario, an attacker records the radio communication during a password-based user authentication of his or her victim, for instance during a login to the operating system or during unlocking a screen lock. At an opportune moment when the victim's computer system is unattended, the attacker approaches the victim's computer and replays the previously recorded data communication for the password-based user authentication and thereby gets unauthorized access to the victim's system.

tags | advisory
advisories | CVE-2019-18199
SHA-256 | 295b09287826516575c2c41b82ab9bd3db14c75832de107e4dc41a201729e311
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