Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
CVE-2023-4020

9.1CRITICAL

Key Information:

Vendor

Silabs.com

Status
Gsdk
Vendor
CVE Published:
15 December 2023

What is CVE-2023-4020?

An unvalidated input flaw in the Silicon Labs TrustZone implementation enables unauthorized reading and writing to secure memory from non-secure regions. This vulnerability can potentially allow attackers to bypass security boundaries, leading to unauthorized data manipulation or information disclosure.

Affected Version(s)

GSDK 1.0 < 4.4.0

References

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

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2023-4020 : Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory