CVE-2018-21093 : Security Advisory and Response

A vulnerability in certain NETGEAR devices allows unauthenticated attackers to exploit a stack-based buffer overflow.

Understanding CVE-2018-21093

This CVE identifies a security flaw in various NETGEAR models that could be exploited by attackers.

What is CVE-2018-21093?

The vulnerability in NETGEAR devices enables unauthenticated attackers to trigger a stack-based buffer overflow.

The Impact of CVE-2018-21093

CVSS Score: 6.4 (Medium Severity)
Attack Vector: Adjacent Network
Confidentiality Impact: High
Integrity Impact: High
Privileges Required: High
Scope: Unchanged
User Interaction: None

Technical Details of CVE-2018-21093

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows unauthenticated attackers to exploit a stack-based buffer overflow in NETGEAR devices.

Affected Systems and Versions

The following NETGEAR models and versions are affected:

D8500 (before 1.0.3.42)
EX3700 (before 1.0.0.70)
EX3800 (before 1.0.0.70)
EX6000 (before 1.0.0.30)
and more (refer to the provided list for full details).

Exploitation Mechanism

Attackers can exploit this vulnerability remotely through an adjacent network without requiring user interaction.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Update affected devices to the latest firmware versions.
Implement network segmentation to limit exposure.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and security patches.
Conduct security assessments and penetration testing.
Educate users on best security practices to prevent unauthorized access.

Patching and Updates

Ensure that all affected NETGEAR devices are patched with the latest firmware updates to mitigate the vulnerability.