CVE-2021-27357 : Vulnerability Insights and Analysis

RIOT-OS 2020.01 contains a buffer overflow vulnerability in /sys/net/gnrc/routing/rpl/gnrc_rpl_control_messages.c.

Understanding CVE-2021-27357

This CVE identifies a buffer overflow vulnerability in RIOT-OS version 2020.01 that can be exploited by attackers.

What is CVE-2021-27357?

The CVE-2021-27357 vulnerability exists in the /sys/net/gnrc/routing/rpl/gnrc_rpl_control_messages.c file of RIOT-OS version 2020.01, allowing potential buffer overflow attacks.

The Impact of CVE-2021-27357

This vulnerability could lead to remote code execution, denial of service, or arbitrary code execution by attackers compromising the affected system.

Technical Details of CVE-2021-27357

The technical details encompass the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability involves a buffer overflow in the specified file, potentially leading to a security breach in RIOT-OS.

Affected Systems and Versions

All instances of RIOT-OS version 2020.01 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability through specially crafted inputs that overrun the buffer in the affected component.

Mitigation and Prevention

To address CVE-2021-27357, immediate actions should be taken along with long-term security measures and regular patching.

Immediate Steps to Take

Immediately update RIOT-OS to the latest version or apply patches provided by the vendor to mitigate the risk of exploitation.

Long-Term Security Practices

Implement network segmentation, access controls, and regular security assessments to enhance overall system security and resilience.

Patching and Updates

Regularly monitor for security advisories and updates from RIOT-OS to apply patches promptly and safeguard against known vulnerabilities.