Vulnerability in Nitrokey Fido2
CVE-2020-27208
The flash read-out protection (RDP) level is not enforced during the device initialization phase of the SoloKeys Solo 4.0.0 & Somu and the Nitrokey FIDO2 token. This allows an adversary to downgrade the RDP level and access secrets such as private ECC keys from SRAM via the debug interface.
EPSS: 0.003 (25.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Nitrokey Fido2
- Nitrokey Fido2_firmware
- Solokeys Solo
- Solokeys Solo_firmware — versions 4.0.0
- Solokeys Somu
- Solokeys Somu_firmware
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Product, x_refsource_MISC)
- cve@mitre.org (Product, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-27208?
- CVE-2020-27208 is a medium-severity vulnerability in Nitrokey Fido2, classified under Inadequate Encryption Strength. CVSS score: 6.8/10. Published 2021-05-21.
- How severe is CVE-2020-27208?
- Medium severity. CVSS v3 base score is 6.8 out of 10.