CVE-2021-44366 Explained : Impact and Mitigation

Multiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. An attacker can send a specially-crafted HTTP request to trigger a reboot.

Understanding CVE-2021-44366

This CVE involves denial of service vulnerabilities in Reolink RLC-410W v3.0.0.136_20121102.

What is CVE-2021-44366?

The vulnerability resides in the JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102, allowing attackers to cause denial of service using a crafted HTTP request.

The Impact of CVE-2021-44366

CVSS Base Score: 8.6 (High)
Attack Vector: Network
Attack Complexity: Low
Availability Impact: High
Scope: Changed
Vulnerability Type: Improper Input Validation (CWE-20)

Technical Details of CVE-2021-44366

This section provides in-depth technical details regarding the CVE.

Vulnerability Description

Multiple denial of service vulnerabilities present in the cgiserver.cgi JSON command parser of Reolink RLC-410W v3.0.0.136_20121102.

Affected Systems and Versions

The vulnerability affects:

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

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted HTTP request to trigger a system reboot.

Mitigation and Prevention

Protect your systems from CVE-2021-44366 using these strategies:

Immediate Steps to Take

Implement network-level protections to filter out potentially malicious HTTP requests.
Apply vendor-released patches promptly to mitigate the vulnerability.

Long-Term Security Practices

Regularly update and patch all network-connected devices.
Conduct security assessments to identify and address any vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories and updates provided by Reolink.