CVE-2021-26461 Explained : Impact and Mitigation

Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc, and memalign. This can lead to arbitrary memory allocation, resulting in unexpected behavior like a crash or remote code injection.

Understanding CVE-2021-26461

This CVE affects Apache NuttX, specifically versions prior to 10.1.0, exposing vulnerabilities related to integer wrap-around.

What is CVE-2021-26461?

The vulnerability lies in the malloc, realloc, and memalign functions of Apache NuttX versions prior to 10.1.0 due to improper memory assignment, leading to potential arbitrary memory allocation.

The Impact of CVE-2021-26461

The vulnerability can result in unexpected behavior, including system crashes or even remote code injection and execution.

Technical Details of CVE-2021-26461

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability is related to an integer wrap-around issue in the malloc, realloc, and memalign functions of Apache NuttX.

Affected Systems and Versions

Apache NuttX versions prior to 10.1.0 are affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit this vulnerability to perform arbitrary memory allocation, which can lead to system instability or malicious code execution.

Mitigation and Prevention

Here's how you can mitigate the risks associated with CVE-2021-26461.

Immediate Steps to Take

Ensure you update Apache NuttX to version 10.1.0 or newer to eliminate the vulnerability. Additionally, monitor for any suspicious activities on the system.

Long-Term Security Practices

Implement secure coding practices and regular security audits to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security updates and patches released by Apache NuttX to stay protected against potential threats.