CVE-2021-44398 : Security Advisory and Response

A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102, which can be triggered by a specially-crafted HTTP request, leading to a reboot.

Understanding CVE-2021-44398

This CVE is related to improper input validation in the affected version of the Reolink RLC-410W.

What is CVE-2021-44398?

The vulnerability in cgiserver.cgi JSON command parser of Reolink RLC-410W allows for a denial of service due to a specially-crafted HTTP request.

The Impact of CVE-2021-44398

The impact of this vulnerability is rated as High with a CVSS base score of 8.6. It can result in a denial of service where an attacker can trigger a system reboot.

Technical Details of CVE-2021-44398

This section outlines the technical details and specifics of the vulnerability.

Vulnerability Description

The vulnerability resides in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102.
A specially-crafted HTTP request can exploit this issue.

Affected Systems and Versions

Affected version: Reolink RLC-410W v3.0.0.136_20121102.
Other versions are not reported as affected.

Exploitation Mechanism

An attacker can send a specifically crafted HTTP request to trigger the vulnerability.

Mitigation and Prevention

It is crucial to take immediate and long-term security measures to address CVE-2021-44398.

Immediate Steps to Take

Implement firewall rules to filter potentially malicious HTTP requests.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update the firmware of the Reolink RLC-410W to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Keep the device firmware up to date to ensure all security patches are applied.