CVE-2023-4280 : What You Need to Know

This CVE-2023-4280 was published on January 2, 2024, by Silicon Labs. It pertains to an unvalidated input in Silicon Labs TrustZone implementation in version 4.3.x and earlier of the Gecko SDK. The vulnerability allows an attacker to access the trusted region of memory from the untrusted region.

Understanding CVE-2023-4280

This section delves into the details of CVE-2023-4280, highlighting its impact, technical description, affected systems, and mitigation strategies.

What is CVE-2023-4280?

CVE-2023-4280 involves an unvalidated input in Silicon Labs TrustZone implementation that permits an attacker to breach the boundary between trusted and untrusted memory regions.

The Impact of CVE-2023-4280

The impact of this vulnerability is categorized by CAPEC-233 as "Privilege Escalation," signifying the severity of unauthorized access it enables.

Technical Details of CVE-2023-4280

Let's explore the technical specifics of CVE-2023-4280 to better understand its implications and how to address it effectively.

Vulnerability Description

The vulnerability stems from improper input validation in the Silicon Labs TrustZone implementation, manifesting in version 4.3.x and prior of the Gecko SDK. This flaw allows an attacker to infiltrate the trusted memory region from the untrusted area.

Affected Systems and Versions

The issue affects the product "GSDK" by silabs.com, specifically version 1.0 with versions up to 4.3.x being vulnerable to this exploit.

Exploitation Mechanism

The vulnerability's exploitation requires low attack complexity and is locally executed. It pertains to privilege escalation, emphasizing high impacts on availability, confidentiality, and integrity without the need for user interaction.

Mitigation and Prevention

Mitigating CVE-2023-4280 is crucial to safeguard systems and prevent potential security breaches. Here are some steps to address this vulnerability effectively.

Immediate Steps to Take

Ensure timely security updates and patches are applied to the affected systems.
Implement strong input validation mechanisms to prevent unvalidated inputs.

Long-Term Security Practices

Conduct regular security assessments and audits to identify and remediate vulnerabilities promptly.
Educate developers and users on secure coding practices and the importance of input validation.

Patching and Updates

Stay informed about security advisories from Silicon Labs and promptly apply any patches or updates released to address CVE-2023-4280 and enhance system security.