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Status published
Critical
CVE-2023-4020
Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
silabs.com
View all reports →Affected Software
GSDK
Vulnerable Versions:
1.0
Timeline
Official Publish:
December 15th, 2023
Last Modified:
September 26th, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
MITRE ATT&CK TTPs
T1190
Exploit Public-Facing Application
Initial Access
T1213
Data from Information Repositories
Collection
T1003
OS Credential Dumping
Credential Access
T1552
Unsecured Credentials
Credential Access
T1068
Exploitation for Privilege Escalation
Privilege Escalation
T1055
Process Injection
Defense Evasion
T1105
Ingress Tool Transfer
Command and Control
T1485
Data Destruction
Impact