CVE-2022-2471 Explained : Impact and Mitigation

A Stack-Based Buffer Overflow vulnerability in the EZVIZ Motion Detection component has been identified, impacting various camera models manufactured by EZVIZ. The vulnerability allows a remote attacker to execute arbitrary code on the affected devices.

Understanding CVE-2022-2471

This section delves into the details of the CVE-2022-2471 vulnerability, its implications, and affected systems.

What is CVE-2022-2471?

CVE-2022-2471 refers to a Stack-Based Buffer Overflow vulnerability found in the EZVIZ Motion Detection component utilized in multiple EZVIZ camera models. This flaw can be exploited by a remote attacker to run malicious code on the target device.

The Impact of CVE-2022-2471

The impact of this critical vulnerability includes a high-risk level regarding confidentiality, integrity, and availability of the affected systems. The CVSS base score for CVE-2022-2471 is 9.9, indicating a severe risk.

Technical Details of CVE-2022-2471

This section outlines the technical aspects of CVE-2022-2471, including vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises due to a stack-based buffer overflow in the EZVIZ Motion Detection component, enabling attackers to remotely execute code on the vulnerable devices.

Affected Systems and Versions

The following EZVIZ camera models are impacted by CVE-2022-2471:

CS-CV248 (Versions < 5.2.3 build 220725)
CS-C6N-A0-1C2WFR (Versions < 5.3.0 build 220428)
CS-DB1C-A0-1E2W2FR (Versions < 5.3.0 build 220802)
CS-C6N-B0-1G2WF (Versions < 5.3.0 build 220712)
CS-C3W-A0-3H4WFRL (Versions < 5.3.5 build 220723)

Exploitation Mechanism

The vulnerability can be exploited over a network with a low attack complexity, requiring no user interaction. Attackers can achieve a high impact on confidentiality, integrity, and availability of the target systems.

Mitigation and Prevention

This section provides guidance on mitigating the CVE-2022-2471 vulnerability and preventing potential exploitation.

Immediate Steps to Take

Users are advised to apply the following immediate steps:

Update the firmware to the patched versions specified by EZVIZ for the affected camera models.

Long-Term Security Practices

Incorporate the following security practices to enhance the long-term security of your devices:

Regularly update firmware and software to the latest versions.
Implement network segmentation and access controls to reduce the attack surface.
Monitor device logs for any unusual activities.

Patching and Updates

EZVIZ has released firmware updates for the affected camera models to address the CVE-2022-2471 vulnerability:

CS-CV248: Version 5.2.3 build 220725 and newer.
CS-C6N-A0-1C2WFR: Version 5.3.0 build 220428 and newer.
CS-DB1C-A0-1E2W2FR: Version 5.3.0 build 220802 and newer.
CS-C6N-B0-1G2WF: Version 5.3.0 build 220712 and newer.
CS-C3W-A0-3H4WFRL: Version 5.3.5 build 220723 and newer.