CVE-2020-27208

Public Exploit

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.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Third-Party Advisory iacr.org Third-Party Advisory github.com Third-Party Advisory fraunhofer.de Third-Party Advisory fraunhofer.de
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.aisec.fraunhofer.de/en/FirmwareProtection.html third party advisory exploit
https://twitter.com/SoloKeysSec product
https://solokeys.com product
https://eprint.iacr.org/2021/640 third party advisory
https://github.com/solokeys/solo/commit/a9c02cd354f34b48195a342c7f524abdef5cbcec third party advisory patch
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-27208?
CVE-2020-27208 has been scored as a medium severity vulnerability.
How to fix CVE-2020-27208?
To fix CVE-2020-27208, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27208 being actively exploited in the wild?
It is possible that CVE-2020-27208 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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