CVE-2021-44387 : 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, potentially leading to a reboot when a specially-crafted HTTP request is sent. This vulnerability has a CVSS base score of 8.6 (High).

Understanding CVE-2021-44387

What is CVE-2021-44387?

The CVE-2021-44387 is a denial of service vulnerability in the cgiserver.cgi JSON command parser of reolink RLC-410W v3.0.0.136_20121102, allowing an attacker to trigger a reboot through a specially-crafted HTTP request.

The Impact of CVE-2021-44387

This vulnerability has a high impact on availability, with a CVSS base severity score of 8.6, making it a significant threat.

Technical Details of CVE-2021-44387

Vulnerability Description

The vulnerability exists in the cgiserver.cgi JSON command parser of the specified Reolink camera model, triggered by a malformed HTTP request.

Affected Systems and Versions

Affected Versions: Reolink RLC-410W v3.0.0.136_20121102
Systems: Reolink RLC-410W camera

Exploitation Mechanism

The vulnerability can be exploited by sending a specially-crafted HTTP request to the affected JSON command parser, leading to a reboot of the camera.

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-supplied patches or updates once available to mitigate the vulnerability.
Monitor network traffic for any signs of attacks targeting this vulnerability.

Long-Term Security Practices

Regularly update and patch all devices on the network to prevent known vulnerabilities from being exploited.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Keep the firmware of the affected Reolink RLC-410W camera up to date to protect against this vulnerability.