CVE-2023-48694 : Exploit Details and Defense Strategies

Azure RTOS USBX Remote Code Execution Vulnerability

Understanding CVE-2023-48694

Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, fully integrated with Azure RTOS ThreadX. This CVE highlights remote code execution risks due to expired pointer dereference and type confusion vulnerabilities.

What is CVE-2023-48694?

CVE-2023-48694 exposes Azure RTOS USBX to remote code execution threats. The impacted components involve functions/processes within the host stack and host class, specifically related to device linked classes such as ASIX, Prolific, SWAR, audio, and CDC ECM in RTOS v6.2.1 and below. The recommended action is to update to USBX release 6.3.0.

The Impact of CVE-2023-48694

The severity of this CVE is rated as MEDIUM, with a CVSS v3.1 base score of 6.8. The exploitation does not require user interaction, and the attacker can achieve high impact on confidentiality, integrity, and availability.

Technical Details of CVE-2023-48694

The vulnerability is primarily associated with expired pointer dereference and type confusion issues within Azure RTOS USBX.

Vulnerability Description

The vulnerability allows an attacker to execute remote code, posing a significant threat to the affected systems.

Affected Systems and Versions

Azure RTOS USBX versions below 6.3.0 are vulnerable to this exploit.

Exploitation Mechanism

The exploit involves manipulating the expired pointer dereference and type confusion vulnerabilities to achieve remote code execution.

Mitigation and Prevention

To safeguard your system against CVE-2023-48694, follow the necessary mitigation and prevention steps.

Immediate Steps to Take

Upgrade to USBX release 6.3.0 to patch the vulnerabilities.

Long-Term Security Practices

Implement regular security updates and patches to mitigate future vulnerabilities.

Patching and Updates

Stay informed about security advisories and update your systems promptly to ensure protection against evolving threats.