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CVE
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CVE-2020-27211Date: (C)2021-05-21   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 5.7CVSS Score : 3.3
Exploit Score: 0.5Exploit Score: 3.4
Impact Score: 5.2Impact Score: 4.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: PHYSICALAccess Vector: LOCAL
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: NONE
Integrity: HIGH 
Availability: NONE 
  
Reference:
https://eprint.iacr.org/2021/640
https://infocenter.nordicsemi.com/pdf/in_133_v1.0.pdf
https://limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass/
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html
https://www.aisec.fraunhofer.de/en/FirmwareProtection.html

CWE    1
CWE-203

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