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CVE-2021-21736 Explained : Impact and Mitigation

Discover the impact of CVE-2021-21736 affecting ZTE ZXHN HS562 smart camera. Learn about the security flaw, affected versions, and essential steps to mitigate the vulnerability.

A smart camera product of ZTE, ZXHN HS562, is impacted by a permission and access control vulnerability, allowing users with revoked sharing permissions to control the camera.

Understanding CVE-2021-21736

This CVE identifies a vulnerability in the ZXHN HS562 smart camera product of ZTE that affects versions V1.0.0.0B2.0000 and V1.0.0.0B3.0000.

What is CVE-2021-21736?

CVE-2021-21736 highlights a permission management flaw in the cloud-end application of the ZXHN HS562 camera. Users who have lost sharing permissions can still manipulate the camera, including functions like restarting or resetting it.

The Impact of CVE-2021-21736

The vulnerability could lead to unauthorized control over the affected camera, compromising user privacy and security.

Technical Details of CVE-2021-21736

This section outlines critical technical aspects of the CVE.

Vulnerability Description

The flaw arises from inadequate user permission management by the cloud-end app, enabling users with revoked access to control the camera.

Affected Systems and Versions

ZXHN HS562 smart cameras with software versions V1.0.0.0B2.0000 and V1.0.0.0B3.0000 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the improper permission control issue in the cloud-end app to take unauthorized control of the camera.

Mitigation and Prevention

Protecting systems against CVE-2021-21736 is crucial to prevent unauthorized access to the smart camera.

Immediate Steps to Take

Users are advised to update the ZXHN HS562 camera firmware to a secure version provided by ZTE to mitigate the vulnerability.

Long-Term Security Practices

Adopting robust security measures, such as changing default passwords, implementing network segmentation, and monitoring camera access, can enhance overall security.

Patching and Updates

Regularly check for and apply firmware updates for the ZXHN HS562 camera to address known vulnerabilities and strengthen security measures.

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