Vulnerability in Ledger Nano S
CVE-2019-14354
On Ledger Nano S and Nano X 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. In other words, 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.
EPSS: 0.004 (27.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Ledger Nano_s
- Ledger Nano_s_firmware
- Ledger Nano_x
- Ledger Nano_x_firmware
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-14354?
- CVE-2019-14354 is a low-severity vulnerability in Ledger Nano S, classified under Observable Discrepancy. CVSS score: 2.4/10. Published 2019-08-10.
- How severe is CVE-2019-14354?
- Low severity. CVSS v3 base score is 2.4 out of 10.