CVE-2021-44395 : What You Need to Know

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-2021-44395

This CVE involves a vulnerability in the JSON command parser of a specific version of Reolink RLC-410W.

What is CVE-2021-44395?

The CVE-2021-44395 vulnerability is related to a denial of service issue that can be exploited by sending a malicious HTTP request to the affected device, resulting in a reboot.

The Impact of CVE-2021-44395

The vulnerability has a CVSS base score of 8.6 (High), with a high impact on availability. It does not require any special privileges for exploitation and can be triggered over a network.

Technical Details of CVE-2021-44395

Details on the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from improper input validation in the cgiserver.cgi JSON command parser, allowing an attacker to cause a reboot through a crafted HTTP request.

Affected Systems and Versions

Affected System: reolink RLC-410W v3.0.0.136_20121102
Affected Versions: Not specified, assumed to be the mentioned version

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Changed
Confidentiality & Integrity Impact: None
Availability Impact: High

Mitigation and Prevention

Measures to address and prevent exploitation of the vulnerability.

Immediate Steps to Take

Disable remote access if not required
Implement network segmentation to restrict access

Long-Term Security Practices

Regularly update firmware and security patches
Conduct security audits and penetration testing

Patching and Updates

Check for vendor patches and updates
Apply recommended security configurations and best practices