CVE-2020-27212

high

Description

STMicroelectronics STM32L4 devices through 2020-10-19 have incorrect access control. The flash read-out protection (RDP) can be degraded from RDP level 2 (no access via debug interface) to level 1 (limited access via debug interface) by injecting a fault during the boot phase.

References

Advisories
References

https://www.aisec.fraunhofer.de/en/FirmwareProtection.html

https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html

https://eprint.iacr.org/2021/640

https://www.cisa.gov/news-events/ics-advisories/icsa-25-084-03

Details

Source: Mitre, NVD

Published: 2021-05-21

Updated: 2021-06-08

Risk Information

CVSS v2

Base Score: 4.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00159