CVE-2021-45605 : What You Need to Know

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects various router models.

Understanding CVE-2021-45605

Certain NETGEAR routers are vulnerable to a stack-based buffer overflow when manipulated by an authenticated user.

What is CVE-2021-45605?

CVE-2021-45605 is a vulnerability that allows an authenticated user to cause a stack-based buffer overflow on specific NETGEAR router models.

The Impact of CVE-2021-45605

This vulnerability has a medium severity base score of 6 and a high availability impact. Attack complexity is low, and privileged access is required.

Technical Details of CVE-2021-45605

Expanding on the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from a stack-based buffer overflow in certain NETGEAR routers due to insufficient input validation.

Affected Systems and Versions

R6400 before 1.0.1.68
R7000 before 1.0.11.116
R6900P before 1.3.3.140
R7000P before 1.3.3.140
R7900 before 1.0.4.38
RAX75 before 1.0.3.102
RAX80 before 1.0.3.102
XR300 before 1.0.3.50

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user sending crafted requests to the affected routers, potentially leading to a denial of service or arbitrary code execution.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2021-45605.

Immediate Steps to Take

Update the affected routers to the latest firmware versions provided by NETGEAR.
Restrict network access to trusted users and devices.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update router firmware to patch known vulnerabilities.
Implement network segmentation and access controls to limit the attack surface.

Patching and Updates

NETGEAR has released firmware updates addressing CVE-2021-45605. Ensure timely installation of these updates to secure the affected devices.