CVE-2021-20635 : What You Need to Know

This article discusses CVE-2021-20635, a vulnerability found in LOGITEC LAN-WH450N/GR routers that allows an attacker to recover PIN and access the network within the wireless range of the device.

Understanding CVE-2021-20635

CVE-2021-20635 highlights the importance of proper authentication restrictions to prevent unauthorized access to wireless networks.

What is CVE-2021-20635?

CVE-2021-20635 is caused by improper restriction of excessive authentication attempts in LOGITEC LAN-WH450N/GR routers. This flaw enables attackers in close wireless proximity to obtain the device's PIN and subsequently infiltrate the network.

The Impact of CVE-2021-20635

The impact of CVE-2021-20635 is significant as it compromises the security of the network, allowing unauthorized access and potential data breaches.

Technical Details of CVE-2021-20635

Understanding the technical aspects of CVE-2021-20635 aids in comprehending the vulnerability's severity and the necessary mitigation measures.

Vulnerability Description

The vulnerability stems from the lack of proper restrictions on authentication attempts, enabling malicious actors to exploit this weakness and gain unauthorized access to the network.

Affected Systems and Versions

LOGITEC LAN-WH450N/GR routers are susceptible to CVE-2021-20635. Specifically, the affected version is LAN-WH450N/GR.

Exploitation Mechanism

Attackers within the wireless range of the device can exploit the vulnerability by launching multiple authentication attempts until they successfully retrieve the PIN and access the network.

Mitigation and Prevention

To safeguard against CVE-2021-20635, immediate actions and long-term security practices are crucial for maintaining network integrity.

Immediate Steps to Take

Users should update the router's firmware to the latest version, change default PINs, and implement strong authentication protocols to mitigate the risk of exploitation.

Long-Term Security Practices

Enforcing network segmentation, monitoring traffic patterns for anomalies, and regularly updating security measures are essential for long-term protection against similar vulnerabilities.

Patching and Updates

Regularly check for firmware updates and security patches provided by LOGITEC CORPORATION to address CVE-2021-20635 and enhance the security of LAN-WH450N/GR routers.