CVE-2021-21965 : What You Need to Know

A denial of service vulnerability exists in the SeaMax remote configuration functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34, allowing attackers to trigger a denial of service attack by sending specially-crafted network packets.

Understanding CVE-2021-21965

This section provides an overview of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-21965?

The CVE-2021-21965 vulnerability is classified as CWE-284: Improper Access Control. It affects Sealevel Systems, Inc. SeaConnect 370W v1.3.34, allowing remote attackers to disrupt services by exploiting the SeaMax remote configuration functionality.

The Impact of CVE-2021-21965

The vulnerability has a CVSS v3.0 base score of 8.6, indicating a high severity level. Attackers can exploit this flaw via specially-crafted network packets to trigger a denial of service, potentially causing significant disruption and downtime.

Technical Details of CVE-2021-21965

Below are the technical specifics related to the CVE-2021-21965 vulnerability:

Vulnerability Description

The vulnerability arises due to improper access control in the SeaMax remote configuration of Sealevel Systems, Inc. SeaConnect 370W v1.3.34, enabling attackers to launch denial of service attacks.

Affected Systems and Versions

This vulnerability affects Sealevel Systems, Inc. SeaConnect 370W v1.3.34.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending malicious network packets to the target system, leading to denial of service.

Mitigation and Prevention

To safeguard systems from CVE-2021-21965, consider the following steps:

Immediate Steps to Take

Monitor network traffic for any suspicious or malicious activity targeting the SeaMax remote configuration.
Implement firewall rules to restrict unauthorized access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch Sealevel Systems, Inc. SeaConnect 370W to address known vulnerabilities.
Conduct security assessments and audits to identify and address weaknesses in network configurations.

Patching and Updates

Stay informed about security advisories and patches released by Sealevel to address CVE-2021-21965 and other potential vulnerabilities.