PT-2021-11315 · Nordic Semiconductor · Nrf52840

Limitedresults · Published 2021-05-21 · Updated 2022-05-03 · CVE-2020-27211

Positive Technologies (AI Summary)

CVSS v3.1

5.7

Medium

Base vector

AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions: Nordic Semiconductor nRF52840 devices through 2020-10-19

Description: The issue concerns improper protection against physical side channels in the affected devices. Specifically, the flash read-out protection (APPROTECT) can be bypassed by injecting a fault during the boot phase.

Recommendations: For Nordic Semiconductor nRF52840 devices through 2020-10-19, consider implementing additional security measures to protect against physical side-channel attacks, such as enhancing the boot phase security to prevent fault injection. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2020-27211

Affected Products

Nrf52840

References · 9

• https://osv.dev/vulnerability/CVE-2020-27211 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27211 · Security Note
• https://aisec.fraunhofer.de/en/FirmwareProtection.html · Note
• https://eprint.iacr.org/2021/640 · Note
• https://limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass · Note
• https://t.me/cvenotify/15103 · Telegram Post
• https://aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html · Note
• https://t.me/cvenotify/14794 · Telegram Post
• https://infocenter.nordicsemi.com/pdf/in_133_v1.0.pdf · Note