CVE-2021-44401 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. An attacker can trigger a reboot via a specially-crafted HTTP request.

Understanding CVE-2021-44401

What is CVE-2021-44401?

This CVE refers to a denial of service vulnerability present in the JSON command parser of Reolink RLC-410W v3.0.0.136_20121102, allowing attackers to cause a reboot through specific HTTP requests.

The Impact of CVE-2021-44401

The vulnerability has a high base score of 8.6, with a high severity level, and can result in a denial of service by triggering a reboot via crafted HTTP requests.

Technical Details of CVE-2021-44401

Vulnerability Description

The vulnerability exists in the cgiserver.cgi JSON command parser of Reolink RLC-410W v3.0.0.136_20121102, where a specially-crafted HTTP request can cause a reboot due to the PtzCtrl param not being an object.

Affected Systems and Versions

Vendor: Reolink
Product: RLC-410W
Version: v3.0.0.136_20121102

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Changed
Impact: High

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Restrict network access to affected devices.
Monitor network traffic for signs of exploitation.

Long-Term Security Practices

Regularly update all software and firmware to the latest versions.
Implement network segmentation to limit the impact of potential attacks.
Conduct regular security audits and assessments.

Patching and Updates

It is crucial to apply patches or updates provided by Reolink to address the vulnerability and prevent exploitation.