CVE-2021-44394 : Exploit Details and Defense Strategies

Multiple denial of service vulnerabilities exist in the Reolink RLC-410W v3.0.0.136_20121102. The vulnerabilities are due to improper input validation in the cgiserver.cgi JSON command parser, allowing attackers to trigger reboots through specially-crafted HTTP requests.

Understanding CVE-2021-44394

This CVE relates to denial of service vulnerabilities in Reolink RLC-410W cameras.

What is CVE-2021-44394?

The CVE-2021-44394 is a high-severity vulnerability affecting Reolink RLC-410W cameras, allowing attackers to cause denial of service.

The Impact of CVE-2021-44394

This vulnerability could result in a denial of service condition, potentially leading to camera reboots when exploited by an attacker.

Technical Details of CVE-2021-44394

This section provides technical insights into the vulnerability.

Vulnerability Description

Vulnerability Type: Denial of Service (DoS)
Affected Component: cgiserver.cgi JSON command parser

Affected Systems and Versions

Product: Reolink RLC-410W
Version: v3.0.0.136_20121102

Exploitation Mechanism

The vulnerability arises from improper input validation, allowing malicious actors to craft HTTP requests that can trigger reboots on affected cameras.

Mitigation and Prevention

Protecting systems against CVE-2021-44394 is crucial for maintaining security.

Immediate Steps to Take

Update to a patched firmware version if available
Implement network segmentation to limit exposure
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update camera firmware
Conduct security assessments and penetration testing
Educate users on safe browsing and usage practices

Patching and Updates

Stay informed about security advisories from Reolink
Apply patches promptly to address known vulnerabilities