VulnerabilityModified
CVE-2021-29415
This allows an adversary to recover the private ECC key used during an ECDSA operation.
MEDIUM 5.5EPSS 0.27%
Does this matter?
Lower severity and a low EPSS score (0.27%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.27% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-203
- Affected
- nordicsemi/nrf52840 firmware
- Source
- cve@mitre.org
References
- https://eprint.iacr.org/2021/640Third Party Advisory
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlThird Party Advisory
- https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/Not Applicable
- https://eprint.iacr.org/2021/640Third Party Advisory
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlThird Party Advisory
- https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/Not Applicable
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.