CVE-2023-4020 Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
Attackers can read or write secure memory from non-secure regions due to unvalidated input in the PSA Attestation service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-4020?
CVE-2023-4020 is a critical memory corruption vulnerability in silabs.com GSDK, published on 15 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Which versions are affected by CVE-2023-4020?
It affects 1 product.
Products include Silabs Gecko Software Development Kit.
How do I fix CVE-2023-4020?
No fix has been published for CVE-2023-4020 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-4020 being exploited?
There is no known exploitation of CVE-2023-4020 in the wild and no public exploit code.
Other vulnerabilities in silabs.com GSDK
- CVE-2023-45318 Memory corruption in Gecko Platform
- CVE-2023-2686 Memory corruption in Gecko Platform
- CVE-2023-4280 Unvalidated input in Silicon Labs TrustZone implementation leads to accessing Trusted memory region
- CVE-2023-25181 Memory corruption in Cesium NET
- CVE-2023-27882 Memory corruption in Cesium NET
Sources
Also known as GHSA-2cr6-32m2-cxhc.