Vulnerability · Published Dec 15, 2023 · Assigned by Silabs
CVE-2023-4020Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
Critical 9.0
In plain English
A critical-severity out-of-bounds read in GSDK from silabs.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)9.0Critical
Exploit odds (30 days)0.6%top 52.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| silabs.com | GSDK | 1.0 – before 4.4.0 |
Weakness: CWE-125, CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N