CVE-2021-29074 : Exploit Details and Defense Strategies

A stack-based buffer overflow vulnerability has been identified in certain NETGEAR devices. This CVE affects several device models before specific firmware versions.

Understanding CVE-2021-29074

This section delves into the impact and technical details of CVE-2021-29074.

What is CVE-2021-29074?

CVE-2021-29074 is a stack-based buffer overflow vulnerability found in select NETGEAR devices. The vulnerability can be exploited by an authenticated user, leading to potential security risks.

The Impact of CVE-2021-29074

With a CVSS base score of 8.4, this high-severity vulnerability can have significant consequences. An attacker could trigger a stack-based buffer overflow, compromising the confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-29074

Let's explore the specifics of the vulnerability, including affected systems, versions, and exploitation mechanisms.

Vulnerability Description

The vulnerability results from a stack-based buffer overflow in certain NETGEAR device models. Attackers with authenticated access can exploit this issue to potentially execute malicious code or disrupt device operations.

Affected Systems and Versions

CVE-2021-29074 impacts various NETGEAR devices, including RBW30, RBK852, RBK853, RBR850, RBS850, RBK752, RBK753, RBK753S, RBK754, RBR750, and RBS750, before specific firmware versions.

Exploitation Mechanism

To exploit this vulnerability, an authenticated user can craft and send a specially designed request to the affected device, triggering the stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2021-29074 requires immediate action and long-term security measures.

Immediate Steps to Take

Users are advised to update their NETGEAR devices to the latest firmware versions provided by the manufacturer. Additionally, network segmentation and access control policies can help mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure coding practices, network monitoring, and regular security assessments can enhance overall resilience against similar vulnerabilities in the future.

Patching and Updates

Regularly check for firmware updates and security advisories from NETGEAR to ensure that devices are running the latest patches and are protected from known vulnerabilities.