CVE-2018-21174 : Exploit Details and Defense Strategies

A stack-based buffer overflow vulnerability in certain NETGEAR devices allows authenticated users to exploit the system. This CVE affects various device models and firmware versions.

Understanding CVE-2018-21174

This CVE involves a critical vulnerability in NETGEAR devices that can be exploited by authenticated users.

What is CVE-2018-21174?

CVE-2018-21174 is a stack-based buffer overflow vulnerability found in specific NETGEAR devices, enabling authenticated users to execute malicious actions.

The Impact of CVE-2018-21174

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

Technical Details of CVE-2018-21174

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability allows authenticated users to trigger a stack-based buffer overflow in NETGEAR devices.

Affected Systems and Versions

The following NETGEAR device models and firmware versions are impacted:

D6100 (prior to 1.0.0.57)
R7500 (prior to 1.0.0.122)
R7800 (prior to 1.0.2.40)
R9000 (prior to 1.0.2.52)
WNDR3700v4 (prior to 1.0.2.92)
WNDR4300 (prior to 1.0.2.94)
WNDR4300v2 (prior to 1.0.0.50)
WNDR4500v3 (prior to 1.0.0.50)
WNR2000v5 (prior to 1.0.0.62)

Exploitation Mechanism

The vulnerability can be exploited by authenticated users through a stack-based buffer overflow, potentially leading to unauthorized system access.

Mitigation and Prevention

Protecting systems from CVE-2018-21174 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update affected NETGEAR devices to the latest firmware versions.
Implement strong authentication mechanisms to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and audit device logs for any suspicious activities.
Conduct security training for users to raise awareness about potential threats.

Patching and Updates

Regularly check for security updates and patches released by NETGEAR to address CVE-2018-21174.