CVE-2019-18673 Information

Description

On SHIFT BitBox02 devices a side channel for the row-based OLED display was found. The power consumption of each row-based display cycle depends on the number of illuminated pixels allowing a partial recovery of display contents. For example a hardware implant in the USB cable might be able to leverage this behavior to recover confidential secrets such as the PIN and BIP39 mnemonic. Note: BIP39 secrets are not displayed by default on this device. The side channel is relevant only if the attacker has enough control over the device’s USB connection to make power-consumption measurements at a time when secret data is displayed. The side channel is not relevant in other circumstances such as a stolen device that is not currently displaying secret data.

CVSS Vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://blog.inhq.net/posts/oled-side-channel-status-summary/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.6