CVE-2019-18673 Information disclosure in n/a
A power side-channel in the OLED display allows attackers with USB access to recover secrets like PINs and mnemonics.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-18673?
CVE-2019-18673 is a medium-severity vulnerability in n/a, published on 2 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-203
Which versions are affected by CVE-2019-18673?
It affects 1 product.
Products include Shiftcrypto Bitbox02.
How do I fix CVE-2019-18673?
No fix has been published for CVE-2019-18673 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-18673 being exploited?
There is no known exploitation of CVE-2019-18673 in the wild and no public exploit code.
Sources
Also known as GHSA-f7fr-pcf5-8f29.