CVE-2018-21183 : Security Advisory and Response

A stack-based buffer overflow vulnerability affecting certain NETGEAR devices has been identified, allowing exploitation by authenticated users. This CVE impacts specific router models.

Understanding CVE-2018-21183

This CVE involves a stack-based buffer overflow vulnerability in NETGEAR routers, potentially leading to unauthorized access and control.

What is CVE-2018-21183?

The security flaw in certain NETGEAR devices allows authenticated users to trigger a stack-based buffer overflow, compromising the affected routers' security.

The Impact of CVE-2018-21183

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

Technical Details of CVE-2018-21183

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability is a stack-based buffer overflow in NETGEAR routers, affecting R7800, R9000, WNDR3700v4, and WNDR4300 models.

Affected Systems and Versions

R7800 models before version 1.0.2.40
R9000 models before version 1.0.2.52
WNDR3700v4 models before version 1.0.2.92
WNDR4300 models before version 1.0.2.94

Exploitation Mechanism

Authenticated users can exploit the vulnerability to execute arbitrary code on the affected devices.

Mitigation and Prevention

Protecting systems from CVE-2018-21183 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update affected devices to the recommended firmware versions provided by NETGEAR.
Monitor network traffic for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Regularly update router firmware to patch known vulnerabilities.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

NETGEAR has released firmware updates to address the CVE-2018-21183 vulnerability. Ensure all affected devices are promptly updated to the latest secure versions.