CVE-2021-45547 : Vulnerability Insights and Analysis

Certain NETGEAR devices are affected by command injection by an authenticated user. This impacts various router models before specific firmware versions. The vulnerability has a CVSS base score of 8.4.

Understanding CVE-2021-45547

This CVE describes the issue of command injection affecting certain NETGEAR devices when exploited by an authenticated user.

What is CVE-2021-45547?

Command injection allows an attacker to execute arbitrary commands on a targeted device, potentially leading to unauthorized access or data breaches.

The Impact of CVE-2021-45547

CVSS Base Score: 8.4 (High)
Attack Vector: Adjacent Network
Scope: Changed
Privileges Required: High
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
User Interaction: None
The affected NETGEAR devices are susceptible to unauthorized command execution by authenticated users, posing a significant risk to confidentiality, integrity, and availability.

Technical Details of CVE-2021-45547

This section provides more specific technical details regarding the vulnerability.

Vulnerability Description

The vulnerability allows for command injection by authenticated users on impacted NETGEAR devices.

Affected Systems and Versions

The following NETGEAR devices are affected:

R7850 before 1.0.5.74
R7900P before 1.4.2.84
R7960P before 1.4.2.84
R8000 before 1.0.4.74
R8000P before 1.4.2.84
RAX200 before 1.0.4.120
RAX75 before 1.0.4.120
RAX80 before 1.0.4.120
RBK752 before 3.2.17.12
RBK852 before 3.2.17.12
RBR750 before 3.2.17.12
RBR850 before 3.2.17.12
RBS750 before 3.2.17.12
RBS850 before 3.2.17.12

Exploitation Mechanism

The vulnerability can be exploited when an authenticated user injects malicious command inputs into the affected NETGEAR devices, potentially compromising their security.

Mitigation and Prevention

It is essential to take immediate and long-term security measures to mitigate the risks associated with CVE-2021-45547.

Immediate Steps to Take

Update the firmware of affected NETGEAR devices to the latest versions that contain security patches.
Monitor network traffic for any suspicious activities that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly review and update access controls and user privileges on network devices.
Conduct security training for users to raise awareness of potential security threats like command injection.

Patching and Updates

Stay informed about security advisories from NETGEAR and promptly apply recommended patches to address known vulnerabilities.