CVE-2022-47949 : Exploit Details and Defense Strategies

A critical vulnerability identified as ENLBufferPwn in the Nintendo NetworkBuffer class used in various products like Animal Crossing: New Horizons, Mario Kart, Splatoon, and more, allows remote attackers to execute arbitrary code through a buffer overflow by sending a large UDP packet.

Understanding CVE-2022-47949

This section provides insights into the nature of the vulnerability and its impact.

What is CVE-2022-47949?

The Nintendo NetworkBuffer class vulnerability, known as ENLBufferPwn, enables attackers to trigger a buffer overflow by sending a large UDP packet, leading to the execution of arbitrary code. The attacker must lure the victim to join a game session.

The Impact of CVE-2022-47949

The impact of this vulnerability is critical, with high severity ratings in confidentiality, integrity, and availability. Attackers can exploit this flaw remotely without requiring any special privileges.

Technical Details of CVE-2022-47949

In this section, we delve into the technical aspects of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper handling of large UDP packets in the Nintendo NetworkBuffer class, leading to a buffer overflow and subsequent execution of arbitrary code.

Affected Systems and Versions

Products affected by this vulnerability include Animal Crossing: New Horizons (before 2.0.6), Mario Kart series, Splatoon series, Super Mario Maker 2, and Nintendo Switch Sports.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by sending a specifically crafted large UDP packet to the victim, triggering a buffer overflow and executing malicious code.

Mitigation and Prevention

This section outlines the steps to mitigate the risk posed by CVE-2022-47949.

Immediate Steps to Take

Users are advised to update the affected products to the latest patched versions as soon as possible. Additionally, avoid joining game sessions with unknown or untrusted entities.

Long-Term Security Practices

Implement network segmentation, regular security audits, and user awareness training to enhance overall cybersecurity posture.

Patching and Updates

Stay informed about security updates released by Nintendo for the affected products and promptly apply patches to protect against potential exploitation.