The QNAP TS-239 Pro and TS-639 Pro with firmware 2.1.7 0613, 3.1.0 0627, and 3.1.1 0815 create a LUKS partition by using the AES-256 cipher in plain CBC mode, which allows local users to obtain sensitive information via a watermark attack.
Affected Platforms
Qnap Ts-639 Pro Turbo NasQnap Ts-239 Pro Turbo Nas