CVE-2020-27208

CVSS V2 Medium 4.6 CVSS V3 Medium 6.8
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.
Overview
  • CVE ID
  • CVE-2020-27208
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-21T12:15:07
  • Last Modified Date
  • 2021-05-28T15:41:32
Weakness Enumerations
CWE URL
CWE-326 http://cwe.mitre.org/data/definitions/326.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:solokeys:solo_firmware:4.0.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:solokeys:solo:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:solokeys:somu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:solokeys:somu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:nitrokey:fido2_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:nitrokey:fido2:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • PHYSICAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.8
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://twitter.com/SoloKeysSec Product
https://solokeys.com Product
https://eprint.iacr.org/2021/640 Third Party Advisory
https://www.aisec.fraunhofer.de/en/FirmwareProtection.html Exploit Third Party Advisory
https://github.com/solokeys/solo/commit/a9c02cd354f34b48195a342c7f524abdef5cbcec Patch 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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-27208
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27208
History
Created Old Value New Value Data Type Notes
2022-05-10 16:14:23 Added to TrackCVE
2022-12-05 02:44:11 2021-05-21T12:15Z 2021-05-21T12:15:07 CVE Published Date updated
2022-12-05 02:44:11 2021-05-28T15:41:32 CVE Modified Date updated
2022-12-05 02:44:11 Analyzed Vulnerability Status updated