CVE-2018-21196 Explained : Impact and Mitigation

#-CVE-2018-21196: What You Need to Know Certain NETGEAR devices are susceptible to a stack-based buffer overflow when accessed by an authorized user. This vulnerability impacts various device versions including D6100, R6100, R7800, R9000, WNDR3700v4, WNDR4300, and WNR2000v5.

Understanding CVE-2018-21196

This CVE involves a stack-based buffer overflow vulnerability in specific NETGEAR devices.

What is CVE-2018-21196?

The CVE-2018-21196 vulnerability affects NET-GEAR devices due to a stack-based buffer overflow, but exploitation requires authorization.

The Impact of CVE-2018-21196

The vulnerability poses a medium severity risk with high impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2018-21196

This section delves into the technical aspects of the CVE.

Vulnerability Description

Stack-based buffer overflow in certain NETGEAR devices

Affected Systems and Versions

D6100 before 1.0.0.57
R6100 before 1.0.1.20
R7800 before 1.0.2.40
R9000 before 1.0.2.52
WNDR3700v4 before 1.0.2.92
WNDR4300 before 1.0.2.94
WNR2000v5 before 1.0.0.62

Exploitation Mechanism

Requires an authorized user to access the affected NETGEAR devices

Mitigation and Prevention

Protecting against and addressing the CVE-2018-21196 vulnerability.

Immediate Steps to Take

Update affected devices to the patched versions
Restrict unauthorized access to the devices

Long-Term Security Practices

Regularly monitor for security advisories and updates from NETGEAR
Implement network segmentation to limit the impact of potential breaches

Patching and Updates

Apply firmware updates provided by NETGEAR to address the vulnerability