CVE-2021-44378 : Security Advisory and Response

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 via a specially-crafted HTTP request.

Understanding CVE-2021-44378

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

What is CVE-2021-44378?

This CVE describes a flaw in the JSON command parser of the mentioned camera model that could be exploited by sending a malicious HTTP request, resulting in a reboot.

The Impact of CVE-2021-44378

The vulnerability has a CVSSv3 base score of 8.6, indicating a high severity issue with significant impact on availability.

Technical Details of CVE-2021-44378

The technical aspects of the vulnerability are crucial for understanding the potential risks and implications.

Vulnerability Description

The vulnerability lies in the cgiserver.cgi JSON command parser of the affected camera model, allowing an attacker to remotely trigger a reboot via a specially-crafted HTTP request.

Affected Systems and Versions

Product: Reolink RLC-410W v3.0.0.136_20121102
Versions: All versions up to the specified one are affected.

Exploitation Mechanism

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

Mitigation and Prevention

Taking immediate and long-term actions is essential to mitigate the risks associated with CVE-2021-44378.

Immediate Steps to Take

Disable remote access if not required
Implement network segmentation to limit access
Monitor network traffic for suspicious activities

Long-Term Security Practices

Regularly update the device firmware
Conduct security assessments and penetration testing
Educate users on safe practices and security awareness

Patching and Updates

Ensure timely application of security patches provided by the device vendor to address the identified vulnerability.