National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-14356 Detail

Current Description

** DISPUTED ** On Coldcard MK1 and MK2 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. On Coldcard MK1 and MK2 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. NOTE: At Coinkite, we?ve already mitigated it, even though we feel strongly that it is not a legitimate issue. In our opinion, it is both unproven (might not even work) and also completely impractical?even if it could be made to work perfectly.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.3 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://blog.coinkite.com/noise-troll/ Patch Vendor Advisory
https://github.com/someone42/hardware-bitcoin-wallet/blob/master/pic32/ssd1306.c Exploit Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Information Exposure NIST  

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/o:coinkite:coldcard_mk1_firmware
     Show Matching CPE(s)
Up to (excluding)
2.1.2
Running on/with
 cpe:/h:coinkite:coldcard_mk1:-
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:/o:coinkite:coldcard_mk2_firmware
     Show Matching CPE(s)
Up to (excluding)
2.1.2
Running on/with
 cpe:/h:coinkite:coldcard_mk2:-
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-14356
NVD Published Date:
10/31/2019
NVD Last Modified:
11/06/2019