CVE-2021-44390 : 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. An attacker can trigger a reboot by sending a specially-crafted HTTP request.

Understanding CVE-2021-44390

What is CVE-2021-44390?

This CVE identifies a denial of service vulnerability in Reolink RLC-410W v3.0.0.136_20121102, where a malicious HTTP request can cause the system to reboot.

The Impact of CVE-2021-44390

This vulnerability has a high base severity score of 8.6, posing a significant risk to system availability.

Technical Details of CVE-2021-44390

Vulnerability Description

The vulnerability is due to improper handling of HTTP requests by the cgiserver.cgi JSON command parser, allowing attackers to force a reboot.

Affected Systems and Versions

Affected System: Reolink RLC-410W v3.0.0.136_20121102
Affected Version: Not specified

Exploitation Mechanism

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

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-provided patches promptly
Implement network security measures to filter out malicious HTTP requests
Monitor for unusual system reboots or high HTTP traffic

Long-Term Security Practices

Regularly update and patch all software components
Conduct security assessments and penetration testing
Educate users on safe browsing practices

Patching and Updates

Ensure timely installation of security patches and updates to mitigate the vulnerability.