CVE-2020-27208

Severity CVSS v4.0:

Pending analysis

Type:

CWE-326 Inadequate Encryption Strength

Publication date:

21/05/2021

Last modified:

28/05/2021

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.

Impact

Vector 3.x

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

6.80

Severity 3.x

MEDIUM

Vector 2.0

AV:L/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

4.60

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:solokeys:solo_firmware:4.0.0:::::::*
cpe:2.3:h:solokeys:solo:-:::::::*
cpe:2.3:o:solokeys:somu_firmware:-:::::::*
cpe:2.3:h:solokeys:somu:-:::::::*
cpe:2.3:o:nitrokey:fido2_firmware:-:::::::*
cpe:2.3:h:nitrokey:fido2:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:o:solokeys:solo_firmware:4.0.0:::::::*
cpe:2.3:h:solokeys:solo:-:::::::*
cpe:2.3:o:solokeys:somu_firmware:-:::::::*
cpe:2.3:h:solokeys:somu:-:::::::*
cpe:2.3:o:nitrokey:fido2_firmware:-:::::::*
cpe:2.3:h:nitrokey:fido2:-:::::::*

CVE-2020-27208

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools