title: 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.
problem types: CWE-20 Improper Input Validation
affected:
{
defaultStatus: unaffected
product: GSDK
vendor: silabs.com
versions:
lessThan: 4.4.0, status: affected, version: 1.0, versionType: patch
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 9
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL