CVE-2021-34262 : Vulnerability Insights and Analysis

A buffer overflow vulnerability in the USBH_ParseEPDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.

Understanding CVE-2021-34262

This CVE record details a critical buffer overflow vulnerability in STMicroelectronics STM32Cube Middleware.

What is CVE-2021-34262?

CVE-2021-34262 is a security flaw in the USBH_ParseEPDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and earlier versions. Exploiting this vulnerability can lead to the execution of arbitrary code by malicious actors.

The Impact of CVE-2021-34262

The exploitation of this vulnerability can result in unauthorized remote code execution, potentially compromising the affected systems and leading to serious security breaches.

Technical Details of CVE-2021-34262

This section discusses the technical aspects of the CVE-2021-34262 vulnerability.

Vulnerability Description

The vulnerability arises due to a buffer overflow in the USBH_ParseEPDesc() function, allowing attackers to overwrite memory beyond the allocated buffer, leading to arbitrary code execution.

Affected Systems and Versions

STMicroelectronics STM32Cube Middleware versions up to v1.8.0 are impacted by this vulnerability. Users utilizing these versions are at risk and should take immediate action.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted input to the vulnerable USBH_ParseEPDesc() function, triggering the buffer overflow and executing malicious code.

Mitigation and Prevention

Protecting systems from CVE-2021-34262 requires prompt action and the implementation of security measures.

Immediate Steps to Take

Users are advised to update their STMicroelectronics STM32Cube Middleware to a patched version that addresses the buffer overflow vulnerability. It is crucial to apply security patches promptly.

Long-Term Security Practices

Practicing secure coding standards and conducting regular security audits can help prevent similar buffer overflow vulnerabilities in software applications.

Patching and Updates

Stay informed about security updates released by STMicroelectronics for the STM32Cube Middleware. Regularly check for patches and apply them to ensure your systems are protected against known vulnerabilities.