CVE-2021-31572 : Vulnerability Insights and Analysis

This CVE pertains to an integer overflow vulnerability in the kernel of Amazon Web Services FreeRTOS before version 10.4.3. The flaw exists in stream_buffer.c, affecting a stream buffer.

Understanding CVE-2021-31572

This section will delve into the specifics of the CVE, its impacts, technical details, and mitigation strategies.

What is CVE-2021-31572?

The vulnerability in Amazon Web Services FreeRTOS allows for an integer overflow in the stream buffer handling within the kernel.

The Impact of CVE-2021-31572

If exploited, this vulnerability could lead to potential security breaches, data leaks, or system crashes, posing a significant risk to affected systems.

Technical Details of CVE-2021-31572

Let's explore the technical aspects of this vulnerability to gain a better understanding.

Vulnerability Description

The flaw arises due to an integer overflow issue in stream_buffer.c, a component of Amazon Web Services FreeRTOS before version 10.4.3.

Affected Systems and Versions

All versions of FreeRTOS prior to 10.4.3 are affected by this vulnerability, making them susceptible to exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific inputs to trigger the integer overflow in the stream buffer, potentially leading to unauthorized access or system compromise.

Mitigation and Prevention

To safeguard systems from CVE-2021-31572, immediate actions and long-term security measures are essential.

Immediate Steps to Take

Update FreeRTOS to version 10.4.3 or later to mitigate the vulnerability.
Monitor system logs for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Regularly apply security patches and updates to software components to prevent known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses proactively.

Patching and Updates

Stay informed about security advisories and patches released by Amazon Web Services for FreeRTOS to address CVE-2021-31572 effectively.