CVE-2018-21210 : What You Need to Know

An unauthenticated attacker can exploit a buffer overflow vulnerability in several NETGEAR devices.

Understanding CVE-2018-21210

What is CVE-2018-21210?

CVE-2018-21210 is a buffer overflow vulnerability that affects multiple NETGEAR devices, allowing unauthenticated attackers to exploit the issue.

The Impact of CVE-2018-21210

The vulnerability has a CVSS v3.0 base score of 8.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2018-21210

Vulnerability Description

The vulnerability allows unauthenticated attackers to trigger a buffer overflow in various NETGEAR devices, including models like D3600, D6000, D7800, R6100, R7500, R7800, and others.

Affected Systems and Versions

D3600 (versions prior to 1.0.0.67)
D6000 (versions prior to 1.0.0.67)
D7800 (versions prior to 1.0.1.30)
R6100 (versions prior to 1.0.1.20)
R7500 (versions prior to 1.0.0.118)
R7800 (versions prior to 1.0.2.40)
R9000 (versions prior to 1.0.2.52)
And more

Exploitation Mechanism

The vulnerability can be exploited by an unauthenticated attacker through a buffer overflow, potentially leading to unauthorized access and control of the affected devices.

Mitigation and Prevention

Immediate Steps to Take

Update the firmware of the affected NETGEAR devices to the latest patched versions.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all network devices to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.

Patching and Updates

NETGEAR has released patches for the affected devices to address the buffer overflow vulnerability. Ensure timely installation of these updates to secure the devices against potential exploits.