CVE-2021-27698 : Security Advisory and Response

RIOT-OS 2021.01 is identified to have a buffer overflow vulnerability in the _parse_options() function within /sys/net/gnrc/routing/rpl/gnrc_rpl_control_messages.c.

Understanding CVE-2021-27698

This section delves into the details of the CVE-2021-27698 vulnerability.

What is CVE-2021-27698?

CVE-2021-27698 is a buffer overflow vulnerability found in RIOT-OS 2021.01 that exists in the _parse_options() function in /sys/net/gnrc/routing/rpl/gnrc_rpl_control_messages.c.

The Impact of CVE-2021-27698

This vulnerability could potentially be exploited by malicious actors to execute arbitrary code or cause a denial of service (DoS) on the system.

Technical Details of CVE-2021-27698

Explore the technical aspects of CVE-2021-27698 below.

Vulnerability Description

The buffer overflow vulnerability in RIOT-OS 2021.01 stems from improper input validation within the _parse_options() function.

Affected Systems and Versions

RIOT-OS version 2021.01 is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability by crafting malicious input to overflow the buffer, leading to the execution of unauthorized commands.

Mitigation and Prevention

Learn about the steps to mitigate and prevent the CVE-2021-27698 vulnerability.

Immediate Steps to Take

Users are advised to update RIOT-OS to a patched version that addresses the buffer overflow vulnerability. It is crucial to avoid accepting unsolicited network traffic.

Long-Term Security Practices

Implementing secure coding practices and regular security audits can help in preventing buffer overflow vulnerabilities like CVE-2021-27698.

Patching and Updates

Regularly check for security updates and patches provided by RIOT-OS to ensure that your system is protected against known vulnerabilities.