VulnerabilityModified
CVE-2020-27208
This allows an adversary to downgrade the RDP level and access secrets such as private ECC keys from SRAM via the debug interface.
MEDIUM 6.8EPSS 0.33%
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.8 MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-326
- Affected
- solokeys/solo firmware · solokeys/somu firmware · nitrokey/fido2 firmware
- Source
- cve@mitre.org
References
- https://eprint.iacr.org/2021/640Third Party Advisory
- https://github.com/solokeys/solo/commit/a9c02cd354f34b48195a342c7f524abdef5cbcecPatch, Third Party Advisory
- https://solokeys.comProduct
- https://twitter.com/SoloKeysSecProduct
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlThird Party Advisory
- https://www.aisec.fraunhofer.de/en/FirmwareProtection.htmlExploit, Third Party Advisory
- https://eprint.iacr.org/2021/640Third Party Advisory
- https://github.com/solokeys/solo/commit/a9c02cd354f34b48195a342c7f524abdef5cbcecPatch, Third Party Advisory
- https://solokeys.comProduct
- https://twitter.com/SoloKeysSecProduct
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlThird Party Advisory
- https://www.aisec.fraunhofer.de/en/FirmwareProtection.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.