CVE-2021-28665 : What You Need to Know

This CVE-2021-28665 involves Stormshield SNS versions before 3.7.18, 3.11.6, and 4.1.6, which have a memory-management defect in the SNMP plugin. This vulnerability could result in excessive memory and CPU resource consumption, potentially leading to a denial of service attack.

Understanding CVE-2021-28665

CVE-2021-28665 is a memory-management defect in the SNMP plugin of Stormshield SNS devices, impacting versions prior to 3.7.18, 3.11.6, and 4.1.6.

What is CVE-2021-28665?

The vulnerability in Stormshield SNS devices allows threat actors to exploit the SNMP plugin's memory-management defect, causing a significant consumption of memory and CPU resources. This exploit could potentially lead to a denial of service attack.

The Impact of CVE-2021-28665

The vulnerability can have severe repercussions, including excessive resource consumption and a potential denial of service (DoS) condition. Attackers can leverage this flaw to degrade system performance and disrupt normal operations.

Technical Details of CVE-2021-28665

The technical details of CVE-2021-28665 encompass the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

Stormshield SNS devices with versions prior to 3.7.18, 3.11.6, and 4.1.6 contain a memory-management defect in the SNMP plugin. This flaw can be exploited to trigger a DoS condition by consuming excessive memory and CPU resources.

Affected Systems and Versions

Systems running Stormshield SNS versions before 3.7.18, 3.11.6, and 4.1.6 are susceptible to this vulnerability. Organizations using these versions should take immediate action to mitigate the risk.

Exploitation Mechanism

Threat actors can exploit this vulnerability by sending specially crafted SNMP requests to the affected Stormshield SNS devices, triggering the memory-management defect and causing resource exhaustion.

Mitigation and Prevention

Understanding the mitigation strategies and preventive measures is crucial to safeguard systems from CVE-2021-28665.

Immediate Steps to Take

Organizations should promptly update their Stormshield SNS devices to versions 3.7.18, 3.11.6, or 4.1.6 to address the memory-management defect in the SNMP plugin and reduce the risk of exploitation.

Long-Term Security Practices

Implementing regular security updates, monitoring network activity for suspicious behavior, and restricting SNMP traffic can enhance the long-term security posture against potential vulnerabilities.

Patching and Updates

Staying informed about security patches released by Stormshield and applying them promptly is crucial in mitigating known vulnerabilities and strengthening the overall security posture.