CVE-2021-45536 Explained : Impact and Mitigation

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects several models before specific versions.

Understanding CVE-2021-45536

This CVE involves command injection vulnerability in certain NETGEAR devices.

What is CVE-2021-45536?

Command injection vulnerability on NETGEAR devices allows an authenticated user to execute arbitrary commands. Affected models include RAX75, RAX80, RBK752, RBR750, RBS750, RBK852, RBR850, and RBS850.

The Impact of CVE-2021-45536

The vulnerability has a CVSS base score of 8.4, indicating a high severity issue with significant impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2021-45536

This section provides technical details of the CVE.

Vulnerability Description

The vulnerability allows an authenticated user to inject and execute arbitrary commands on affected NETGEAR devices.

Affected Systems and Versions

RAX75 before 1.0.3.106
RAX80 before 1.0.3.106
RBK752 before 3.2.16.6
RBR750 before 3.2.16.6
RBS750 before 3.2.16.6
RBK852 before 3.2.16.6
RBR850 before 3.2.16.6
RBS850 before 3.2.16.6

Exploitation Mechanism

The attack complexity is low, and an adjacent network vector is needed. Privileges are required, and user interaction is not necessary for exploitation.

Mitigation and Prevention

Mitigation strategies for CVE-2021-45536.

Immediate Steps to Take

Update affected devices to the patched versions immediately.
Restrict network access to vulnerable devices.
Monitor network traffic for signs of exploitation.

Long-Term Security Practices

Regularly update firmware to the latest versions.
Implement network segmentation to limit the impact of potential future vulnerabilities.
Conduct security audits and penetration testing regularly.

Patching and Updates

Apply the latest firmware updates provided by NETGEAR to address the command injection vulnerability.