CVE-2021-44382 : 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-2021-44382

This CVE relates to a vulnerability in reolink RLC-410W v3.0.0.136_20121102's cgiserver.cgi JSON command parser.

What is CVE-2021-44382?

The vulnerability allows for a denial of service attack via a crafted HTTP request, potentially leading to system reboot by triggering the SetIrLights parameter.

The Impact of CVE-2021-44382

The vulnerability has a CVSS base score of 8.6, classifying it as high severity due to its potential for a significant impact on availability.

Technical Details of CVE-2021-44382

The technical details of the vulnerability provide insights into its description, affected systems, versions, and exploitation.

Vulnerability Description

The vulnerability arises from improper input validation in the cgiserver.cgi JSON command parser of reolink RLC-410W v3.0.0.136_20121102, enabling a reboot through a specially-crafted HTTP request.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: RLC-410W v3.0.0.136_20121102 (affected)

Exploitation Mechanism

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

Mitigation and Prevention

Addressing the CVE requires immediate steps and long-term security practices to enhance system resilience.

Immediate Steps to Take

Apply vendor patches promptly
Implement network segmentation to limit exposure
Monitor and filter incoming HTTP requests

Long-Term Security Practices

Conduct regular security assessments
Keep software and systems updated
Educate users on safe practices

Patching and Updates

Regularly check for vendor security advisories and update systems accordingly.