CVE-2018-21162 : Vulnerability Insights and Analysis

NETGEAR devices, including D6400, EX6200, EX7000, R6250, R6300v2, R6400, R6700, R7000, R7100LG, R7300DST, R7900, R8000, R8300, R8500, WNDR3400v3, and WNR3500Lv2, are vulnerable to command injection attacks.

Understanding CVE-2018-21162

This CVE involves multiple NETGEAR device models being susceptible to command injection attacks by unauthenticated attackers.

What is CVE-2018-21162?

CVE-2018-21162 is a vulnerability that allows unauthenticated attackers to execute commands on certain NETGEAR devices, potentially leading to unauthorized access and control.

The Impact of CVE-2018-21162

The vulnerability has a CVSS v3.0 base score of 8.8 (High severity) with significant impacts on confidentiality, integrity, and availability of affected devices.

Technical Details of CVE-2018-21162

NETGEAR devices are affected by command injection vulnerabilities, as detailed below:

Vulnerability Description

The vulnerability allows unauthenticated attackers to execute arbitrary commands on vulnerable devices.

Affected Systems and Versions

The following NETGEAR device models are affected:

D6400 (before 1.0.0.78)
EX6200 (before 1.0.3.86)
R6250 (before 1.0.4.8)
R7000 (before 1.0.7.10)
and more (refer to the full list in the description).

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted requests to the affected devices, allowing them to execute commands remotely.

Mitigation and Prevention

To address CVE-2018-21162, consider the following steps:

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update and patch all network devices.
Conduct security assessments and penetration testing.
Educate users on best security practices to prevent unauthorized access.
Consider network segmentation to isolate critical devices.

Patching and Updates

Ensure that all NETGEAR devices are updated to versions that have addressed the command injection vulnerability.