CVE-2021-33046 Explained : Impact and Mitigation

Dahua products, including IP cameras, PTZ dome cameras, thermal cameras, intercoms, NVRs, XVRs, and HCVRs, are affected by an access control vulnerability. This vulnerability allows attackers to reset device passwords via specific deployments.

Understanding CVE-2021-33046

This CVE involves an access control vulnerability in certain Dahua products, enabling malicious actors to reset device passwords.

What is CVE-2021-33046?

The CVE-2021-33046 refers to an access control vulnerability present in various Dahua products, allowing unauthorized password resets.

The Impact of CVE-2021-33046

This vulnerability can be exploited by attackers to gain unauthorized access to Dahua devices by resetting passwords, potentially compromising the security and privacy of connected systems.

Technical Details of CVE-2021-33046

This section covers the specific details of the vulnerability.

Vulnerability Description

The vulnerability lies in the password reset process of affected Dahua products, creating an opportunity for attackers to reset device passwords through specific methods.

Affected Systems and Versions

The access control vulnerability impacts Dahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, PTZ Dome Camera models, Thermal cameras, intercom devices, NVRs, XVRs, and HCVRs.

Exploitation Mechanism

Attackers can exploit this vulnerability in Dahua products by performing specific actions that trigger the unauthorized password reset process.

Mitigation and Prevention

Below are the steps to mitigate and prevent exploitation of CVE-2021-33046.

Immediate Steps to Take

Users should immediately update firmware, change default passwords, and restrict network access to affected Dahua devices to mitigate the risk of exploitation.

Long-Term Security Practices

Implement strong password policies, regularly update firmware, monitor network activity, and conduct security audits to enhance the overall security posture.

Patching and Updates

Regularly check for security updates and patches provided by Dahua, and promptly apply them to ensure protection against known vulnerabilities.