CVEvulnerability
CVE-2021-29415
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-05-21
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203
Description
The elliptic curve cryptography (ECC) hardware accelerator, part of the ARM® TrustZone® CryptoCell 310, contained in the NordicSemiconductor nRF52840 through 2021-03-29 has a non-constant time ECDSA implemenation. This allows an adversary to recover the private ECC key used during an ECDSA operation.
Affected configurations
• nordicsemi nrf52840 firmware (<= 2021-03-29)
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://eprint.iacr.org/2021/640 Third Party Advisory
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html Third Party Advisory
- https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/ Not Applicable
- https://eprint.iacr.org/2021/640 Third Party Advisory
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html Third Party Advisory
- https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/ Not Applicable