CVE-2023-4020

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

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.

Category

9.0
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.22%
Affected: silabs.com GSDK
Published at:
Updated at:

References

Link Tags
https://github.com/SiliconLabs/gecko_sdk/releases release notes
https://community.silabs.com/069Vm0000004b95IAA permissions required

Frequently Asked Questions

What is the severity of CVE-2023-4020?
CVE-2023-4020 has been scored as a critical severity vulnerability.
How to fix CVE-2023-4020?
To fix CVE-2023-4020, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4020 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4020 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4020?
CVE-2023-4020 affects silabs.com GSDK.
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