CVE-2021-44377 : Vulnerability Insights and Analysis

A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102, allowing an attacker to trigger a reboot through a specially-crafted HTTP request.

Understanding CVE-2021-44377

This CVE details a denial of service vulnerability in a specific version of the Reolink RLC-410W camera.

What is CVE-2021-44377?

The vulnerability stems from improper handling of specific HTTP requests, which can cause the camera to reboot, potentially disrupting its service.

The Impact of CVE-2021-44377

The vulnerability has a CVSS base score of 8.6 (High), with a significant impact on availability when exploited. An attacker can remotely trigger the camera reboot via a crafted HTTP request.

Technical Details of CVE-2021-44377

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The issue lies in the cgiserver.cgi JSON command parser of Reolink RLC-410W v3.0.0.136_20121102, where a specific HTTP request can lead to a reboot due to improper parsing.

Affected Systems and Versions

Affected Product: Reolink RLC-410W v3.0.0.136_20121102
All versions prior to the stated one are likely affected.

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Changed
The vulnerability can be exploited remotely without authentication.

Mitigation and Prevention

To safeguard systems from CVE-2021-44377, follow these steps:

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Implement network segmentation to limit exposure.
Regularly update firmware and security configurations.

Patching and Updates

Keep the device firmware up to date.
Follow manufacturer guidelines for secure configurations and updates.