CVE-2018-21109 : Exploit Details and Defense Strategies

Devices prior to version 1.0.2.60 of the NETGEAR R7800 are vulnerable to command injection when accessed by a user with authentication.

Understanding CVE-2018-21109

NETGEAR R7800 devices before version 1.0.2.60 are susceptible to command injection by authenticated users.

What is CVE-2018-21109?

CVE-2018-21109 is a vulnerability in NETGEAR R7800 devices that allows authenticated users to execute commands, potentially leading to unauthorized access and control of the device.

The Impact of CVE-2018-21109

The vulnerability has a CVSS base score of 6.8, indicating a medium severity issue with high impacts on confidentiality, integrity, and availability of the affected devices.

Technical Details of CVE-2018-21109

NETGEAR R7800 devices are affected by a command injection vulnerability that can be exploited by authenticated users.

Vulnerability Description

The vulnerability allows authenticated users to inject and execute commands on the affected devices, potentially leading to unauthorized actions.

Affected Systems and Versions

Product: NETGEAR R7800
Versions Affected: Devices before version 1.0.2.60

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Adjacent Network
Privileges Required: High
User Interaction: None
Scope: Unchanged

Mitigation and Prevention

Immediate action is crucial to mitigate the risks posed by CVE-2018-21109.

Immediate Steps to Take

Update NETGEAR R7800 devices to version 1.0.2.60 or later.
Restrict access to authenticated users only.
Monitor device logs for suspicious activities.

Long-Term Security Practices

Regularly update firmware and security patches.
Implement strong authentication mechanisms.
Conduct security audits and assessments periodically.

Patching and Updates

Ensure timely installation of security patches and firmware updates provided by NETGEAR to address the CVE-2018-21109 vulnerability.