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CVE-2021-38394 Detail

Current Description

An attacker with physical access to the device can extract the binary that checks for the hardware key and reverse engineer it, which could be used to create a physical duplicate of a valid hardware key. The hardware key allows access to special settings when inserted.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.4 MEDIUM
Vector:  CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  ICS-CERT
Base Score:  6.2 MEDIUM
Vector:  CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://us-cert.cisa.gov/ics/advisories/icsma-21-273-01 Third Party Advisory  US Government Resource 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1278 Missing Protection Against Hardware Reverse Engineering Using Integrated Circuit (IC) Imaging Techni Provider acceptance level ICS-CERT  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-38394
NVD Published Date:
10/04/2021
NVD Last Modified:
10/13/2021
Source:
ICS-CERT