PT-2021-18198 · Nordic Semiconductor+1 · Nrf52840+1

Published 2021-05-21 · Updated 2022-07-12 · CVE-2021-29415

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: NordicSemiconductor nRF52840 versions prior to 2021-03-29

Description: The issue concerns a non-constant time ECDSA implementation in the elliptic curve cryptography (ECC) hardware accelerator, part of the ARM TrustZone CryptoCell 310. This allows an adversary to recover the private ECC key used during an ECDSA operation.

Recommendations: For versions prior to 2021-03-29, at the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2021-29415

Affected Products

Arm Trustzone Cryptocell 310

Nrf52840

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-29415 · Security Note
• https://osv.dev/vulnerability/CVE-2021-29415 · Vendor Advisory
• https://aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html · Note
• https://sit.fraunhofer.de/en/news-events/downloads-services/cve · Note
• https://eprint.iacr.org/2021/640 · Note