CVE-2020-27211
3.3 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:P/A:N
5.7 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
5.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
38.1%
Nordic Semiconductor nRF52840 devices through 2020-10-19 have improper protection against physical side channels. The flash read-out protection (APPROTECT) can be bypassed by injecting a fault during the boot phase.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| nordicsemi:nrf52840_firmware | nordicsemi nrf52840 firmware | le | 2020-10-19 |
References
eprint.iacr.org/2021/640
infocenter.nordicsemi.com/pdf/in_133_v1.0.pdf
limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass/
www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html
www.aisec.fraunhofer.de/en/FirmwareProtection.html
Social References
More
Related
3.3 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:P/A:N
5.7 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
5.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
38.1%