CVE-2019-20657 : Vulnerability Insights and Analysis

A buffer overflow vulnerability affecting several NETGEAR devices when accessed by an authenticated user.

Understanding CVE-2019-20657

What is CVE-2019-20657?

The buffer overflow vulnerability impacts various NETGEAR devices when accessed by an authenticated user. The affected models and firmware versions include D6200, D7000, PR2000, R6020, R6080, R6050, JR6150, R6120, R6220, R6230, R6260, R6700v2, R6800, R6900v2, and WNR2020.

The Impact of CVE-2019-20657

The vulnerability has a CVSS base score of 8 (High severity) with high impacts on confidentiality, integrity, and availability. It requires low privileges and no user interaction.

Technical Details of CVE-2019-20657

Vulnerability Description

The buffer overflow vulnerability allows an authenticated user to execute arbitrary code on the affected NETGEAR devices.

Affected Systems and Versions

D6200 (before 1.1.00.36)
D7000 (before 1.0.1.74)
PR2000 (before 1.0.0.28)
R6020 (before 1.0.0.42)
R6080 (before 1.0.0.42)
R6050 (before 1.0.1.24)
JR6150 (before 1.0.1.24)
R6120 (before 1.0.0.48)
R6220 (before 1.1.0.86)
R6230 (before 1.1.0.86)
R6260 (before 1.1.0.64)
R6700v2 (before 1.2.0.62)
R6800 (before 1.2.0.62)
R6900v2 (before 1.2.0.62)
WNR2020 (before 1.1.0.62)

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user to trigger a buffer overflow, potentially leading to arbitrary code execution.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by NETGEAR for the affected devices.
Monitor for any unusual activities on the network.
Restrict access to vulnerable devices.

Long-Term Security Practices

Regularly update firmware and software on all network devices.
Implement strong authentication mechanisms.
Conduct regular security audits and assessments.

Patching and Updates

Ensure that all NETGEAR devices are updated with the latest firmware versions to mitigate the buffer overflow vulnerability.