CVE-2019-14360

4.6 MEDIUM

On Hyundai Pay Kasse HK-1000 devices, a side channel for the row-based OLED display was found

Published: 2019-11-02 · Last updated: 2026-06-04

Severity and scoring

CVSS: 4.6 MEDIUM
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE: CWE-203

Affected products

Vendor	Product
hyundai-pay	kasse_hk-1000_firmware

Description

On Hyundai Pay Kasse HK-1000 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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2019-14360
[Exploit reference]https://blog.inhq.net/posts/oled-side-channel-status-summary/
[Exploit reference]https://blog.inhq.net/posts/oled-side-channel-status-summary/

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