CVE-2019-20489 : Exploit Details and Defense Strategies

A vulnerability exists in NETGEAR WNR1000V4 1.1.0.54 devices, allowing remote compromise through an authentication bypass in the web management interface.

Understanding CVE-2019-20489

This CVE involves an authentication bypass issue on NETGEAR WNR1000V4 1.1.0.54 devices, enabling remote compromise by an attacker.

What is CVE-2019-20489?

The vulnerability on NETGEAR WNR1000V4 1.1.0.54 devices allows attackers to compromise the device remotely through a malicious webpage by exploiting an authentication bypass in the web management interface.

The Impact of CVE-2019-20489

The vulnerability permits attackers to compromise the device remotely, posing a significant security risk to affected systems.

Technical Details of CVE-2019-20489

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue on NETGEAR WNR1000V4 1.1.0.54 devices involves an authentication bypass in the web management interface, enabling remote compromise through a malicious webpage.

Affected Systems and Versions

Product: NETGEAR WNR1000V4
Version: 1.1.0.54

Exploitation Mechanism

Attacker sends a request without a cookie to FW_remote.htm&todo=cfg_init
Reads the Set-Cookie header from the 401 Unauthorized response
Repeats the request with the provided cookie to compromise the device

Mitigation and Prevention

Protecting systems from CVE-2019-20489 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the device firmware to the latest version
Implement network segmentation to limit exposure
Monitor network traffic for suspicious activities

Long-Term Security Practices

Regularly update and patch all software and devices
Conduct security assessments and penetration testing
Educate users on safe browsing habits and phishing awareness

Patching and Updates

Apply security patches provided by NETGEAR promptly to address the vulnerability