CVE-2021-44384 : Exploit Details and Defense Strategies

A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. This vulnerability can result in a reboot when triggered by a specially-crafted HTTP request.

Understanding CVE-2021-44384

What is CVE-2021-44384?

The CVE-2021-44384 is a denial of service vulnerability found in the JSON command parser of the Reolink RLC-410W device, potentially leading to a system reboot when exploited.

The Impact of CVE-2021-44384

This vulnerability has a CVSS base score of 8.6, marking it as a high-severity issue. It can result in a denial of service attack with a high impact on availability, requiring no user interaction or special privileges to exploit.

Technical Details of CVE-2021-44384

Vulnerability Description

The vulnerability is due to improper input validation in the cgiserver.cgi JSON command parser of the affected Reolink camera model. By sending a crafted HTTP request, an attacker can trigger the flaw, causing the device to reboot.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by sending a specially-crafted HTTP request to the Reolink RLC-410W camera, specifically targeting the cgiserver.cgi JSON command parser.

Mitigation and Prevention

Immediate Steps to Take

Users should apply security patches provided by the vendor promptly.
Implement network segmentation to restrict access to vulnerable devices.
Monitor network traffic for any suspicious activity that might indicate an ongoing attack.

Long-Term Security Practices

Regularly update camera firmware to ensure the latest security fixes are in place.
Conduct security assessments and penetration testing on IoT devices to identify potential vulnerabilities.

Patching and Updates

Vendor-supplied patches should be applied as soon as they are released to mitigate the CVE-2021-44384 vulnerability.