CVE-2023-48695 : What You Need to Know

Azure RTOS USBX Remote Code Execution Vulnerability allows attackers to remotely execute code through out-of-bounds write vulnerabilities in Azure RTOS USBX. This CVE has a CVSS base score of 7.2, indicating a high severity level.

Understanding CVE-2023-48695

This section will provide an overview of the Azure RTOS USBX Remote Code Execution Vulnerability.

What is CVE-2023-48695?

Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack integrated with Azure RTOS ThreadX. The vulnerability allows for remote code execution due to out-of-bounds write vulnerabilities in host and device classes associated with CDC ECM and RNDIS in RTOS v6.2.1 and below. The issue has been resolved in version 6.3.0 of USBX. Users are urged to update as there are no known workarounds.

The Impact of CVE-2023-48695

The impact of this vulnerability is rated as high, with confidentiality and integrity impacts both assessed as high as well. The attack complexity is low, making it easier for threat actors to exploit the vulnerability.

Technical Details of CVE-2023-48695

This section will delve into the technical details of the Azure RTOS USBX Remote Code Execution Vulnerability.

Vulnerability Description

The vulnerability stems from out-of-bounds write issues in Azure RTOS USBX, enabling attackers to execute code remotely. The affected components include functions/processes in host and device classes related to CDC ECM and RNDIS in RTOS v6.2.1 and below.

Affected Systems and Versions

Azure-RTOS usbx versions below 6.3.0 are affected by this vulnerability. It is crucial for users to check and update to the latest version to mitigate risks.

Exploitation Mechanism

The exploitation involves leveraging the out-of-bounds write vulnerabilities in Azure RTOS USBX to achieve remote code execution. Attackers can target functions/processes in host and device classes to exploit the vulnerability.

Mitigation and Prevention

This section will outline steps to mitigate and prevent the Azure RTOS USBX Remote Code Execution Vulnerability.

Immediate Steps to Take

Users should update their Azure-RTOS usbx to version 6.3.0 or above to eliminate the out-of-bounds write vulnerabilities. Regularly monitor for security advisories and apply patches promptly.

Long-Term Security Practices

Implement strong security practices such as code reviews, input validation, and secure coding guidelines to prevent similar vulnerabilities. Conduct regular security audits and penetration testing to identify and address any security gaps.

Patching and Updates

Stay informed about security updates and patches released by Azure RTOS. Promptly apply patches to ensure that your systems are protected against known vulnerabilities and security threats.