CVE-2018-21123 : Security Advisory and Response

Unauthenticated attackers can exploit command injection vulnerabilities in specific NETGEAR devices. This vulnerability affects WC7500 devices prior to version 6.5.3.9, WC7520 devices prior to version 6.5.3.9, WC7600v1 devices prior to version 6.5.3.9, and WC7600v2 devices prior to version 6.5.3.9.

Understanding CVE-2018-21123

This CVE involves command injection vulnerabilities in certain NETGEAR devices, allowing unauthenticated attackers to exploit them.

What is CVE-2018-21123?

CVE-2018-21123 is a security vulnerability that enables unauthenticated attackers to perform command injections on specific NETGEAR devices.

The Impact of CVE-2018-21123

The vulnerability has a high severity level with a CVSS base score of 8.8. It can result in high impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2018-21123

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability allows unauthenticated attackers to execute commands on affected NETGEAR devices, including WC7500, WC7520, WC7600v1, and WC7600v2, before version 6.5.3.9.

Affected Systems and Versions

WC7500 devices before version 6.5.3.9
WC7520 devices before version 6.5.3.9
WC7600v1 devices before version 6.5.3.9
WC7600v2 devices before version 6.5.3.9

Exploitation Mechanism

The vulnerability can be exploited by unauthenticated attackers through command injections on the specified NETGEAR devices.

Mitigation and Prevention

Protecting systems from CVE-2018-21123 is crucial to prevent unauthorized access and potential damage.

Immediate Steps to Take

Update affected devices to version 6.5.3.9 or later to patch the vulnerability.
Implement network segmentation to limit access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and security patches on all network devices.
Conduct security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure timely installation of security updates and patches provided by NETGEAR to mitigate the CVE-2018-21123 vulnerability.