CVE-2021-34865 : What You Need to Know

This CVE-2021-34865 article provides detailed information about a critical vulnerability impacting multiple NETGEAR routers, allowing attackers to bypass authentication and execute arbitrary code.

Understanding CVE-2021-34865

This section delves into the specifics of the CVE-2021-34865 vulnerability affecting NETGEAR routers.

What is CVE-2021-34865?

CVE-2021-34865 is a security flaw that enables network-adjacent attackers to bypass authentication on affected NETGEAR routers. The vulnerability exists in the mini_httpd service, allowing attackers to escalate privileges and execute unauthorized code.

The Impact of CVE-2021-34865

The impact of CVE-2021-34865 is severe, with a CVSS base score of 8.8 (High Severity). Attackers can exploit this flaw to compromise confidentiality, integrity, and availability of the affected systems without requiring any user interaction.

Technical Details of CVE-2021-34865

This section dives into the technical aspects of the CVE-2021-34865 vulnerability.

Vulnerability Description

The vulnerability results from incorrect string matching logic in the mini_httpd service, allowing unauthorized access to protected pages and enabling privilege escalation.

Affected Systems and Versions

Multiple NETGEAR routers running version 1.2.0.76_1.0.1 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit CVE-2021-34865 by leveraging the flaw in the mini_httpd service on TCP port 80 to bypass authentication, elevate privileges, and execute arbitrary code.

Mitigation and Prevention

This section provides guidance on mitigating the risks associated with CVE-2021-34865.

Immediate Steps to Take

Users are advised to apply security patches released by NETGEAR promptly to address this vulnerability. Additionally, network segmentation and firewall rules can help limit exposure.

Long-Term Security Practices

Implementing strong password policies, keeping systems up to date, and regularly monitoring network traffic are essential for maintaining security.

Patching and Updates

Regularly update firmware and apply security patches provided by NETGEAR to mitigate the risk of exploitation related to CVE-2021-34865.