CVE-2021-44412 : 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 that can lead to a reboot when a specially-crafted HTTP request is sent.

Understanding CVE-2021-44412

This CVE refers to a denial of service vulnerability in a specific version of Reolink RLC-410W.

What is CVE-2021-44412?

The vulnerability exists in the cgiserver.cgi JSON command parser of Reolink RLC-410W v3.0.0.136_20121102, where a crafted HTTP request can trigger a reboot due to the flawed GetRec param.

The Impact of CVE-2021-44412

This vulnerability has a CVSS base score of 8.6, indicating a high severity impact with a potential denial of service through a specially crafted request.

Technical Details of CVE-2021-44412

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The flaw lies in the JSON command parser functionality of cgiserver.cgi, allowing an attacker to remotely trigger a reboot through a manipulated HTTP request.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Reolink RLC-410W v3.0.0.136_20121102

Exploitation Mechanism

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

Mitigation and Prevention

It is crucial to take immediate steps to mitigate and prevent exploitation.

Immediate Steps to Take

Disable remote access if not required
Implement network segmentation
Apply firewall rules to limit incoming HTTP requests

Long-Term Security Practices

Regularly update firmware and software
Conduct security assessments and penetration testing
Educate users about safe internet practices

Patching and Updates

Monitor vendor security advisories for patches
Apply patches promptly after testing in a safe environment