CVE-2021-44406 Explained : Impact and Mitigation

A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. This vulnerability could allow an attacker to trigger a reboot via a specially-crafted HTTP request.

Understanding CVE-2021-44406

What is CVE-2021-44406?

The CVE-2021-44406 is a denial of service vulnerability in the JSON command parser of reolink RLC-410W v3.0.0.136_20121102 camera that could be exploited by sending a malicious HTTP request.

The Impact of CVE-2021-44406

This vulnerability has a CVSS base score of 8.6, indicating a high severity level. It has the potential to cause a reboot of the affected camera, leading to a denial of service condition.

Technical Details of CVE-2021-44406

Vulnerability Description

The cgiserver.cgi JSON command parser in reolink RLC-410W v3.0.0.136_20121102 is susceptible to a denial of service attack triggered by a specially-crafted HTTP request.

Affected Systems and Versions

Affected Product: reolink RLC-410W v3.0.0.136_20121102
Affected Version: Not specified

Exploitation Mechanism

The vulnerability can be exploited by sending a specially-crafted HTTP request to the cgiserver.cgi JSON command parser, leading to a reboot of the camera.

Mitigation and Prevention

Immediate Steps to Take

Update the camera firmware to the latest version provided by the vendor.
Implement strong network access controls to restrict access to the camera.

Long-Term Security Practices

Regularly monitor security advisories for the camera and apply patches promptly.
Conduct security assessments to identify and mitigate potential vulnerabilities.
Implement network segmentation to isolate IoT devices like cameras.

Patching and Updates

Apply vendor-provided patches and firmware updates as soon as they are made available to address this vulnerability.