CVE-2023-4020

Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory

State: Published
Severity: 9.0 Critical
Published: Dec 15, 2023
Updated: Sep 26, 2024
Reserved: Jul 31, 2023

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.

Scores

CVSS	Score	Vector	Source
3.1	9.0 Critical	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N	Silabs

Weaknesses

CWE-125 Out-of-bounds Read
CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
GSDKsilabs.com	1.0 to before 4.4.0Affected

References

https://github.com/SiliconLabs/gecko_sdk/releases
https://community.silabs.com/069Vm0000004b95IAA

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