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CRITICAL · 9.0

CVE-2023-4020

An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure re...

Vulnerability Description

An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure region of memory from the non-secure region of memory.

CVSS Score

9.0

CRITICAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
SilabsGecko Software Development Kit>= 1.0.0, < 4.4.0

Related Weaknesses (CWE)

CWE-787CWE-125

References

FAQ

What is CVE-2023-4020?

CVE-2023-4020 is a vulnerability with a CVSS score of 9.0 (CRITICAL). An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure re...

How severe is CVE-2023-4020?

CVE-2023-4020 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-4020?

Check the references section above for vendor advisories and patch information. Affected products include: Silabs Gecko Software Development Kit.