CVE-2022-29326 Explained : Impact and Mitigation

D-Link DIR-816 A2_v1.10CNB04 was discovered to contain a stack overflow via the addhostfilter parameter in /goform/websHostFilter.

Understanding CVE-2022-29326

This article discusses the details and impact of CVE-2022-29326 affecting D-Link DIR-816 A2_v1.10CNB04.

What is CVE-2022-29326?

CVE-2022-29326 is a vulnerability found in D-Link DIR-816 A2_v1.10CNB04, which allows an attacker to trigger a stack overflow via the addhostfilter parameter in /goform/websHostFilter.

The Impact of CVE-2022-29326

The vulnerability in D-Link DIR-816 A2_v1.10CNB04 could be exploited by an attacker to execute arbitrary code or cause a denial of service (DoS) condition.

Technical Details of CVE-2022-29326

Let's delve into the technical specifics of CVE-2022-29326.

Vulnerability Description

The vulnerability arises due to improper handling of user-supplied input in the addhostfilter parameter, leading to a stack overflow.

Affected Systems and Versions

D-Link DIR-816 A2_v1.10CNB04 is confirmed to be affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit this issue by sending a specially crafted request to the vulnerable parameter, potentially resulting in arbitrary code execution or DoS.

Mitigation and Prevention

Here are some steps to mitigate the CVE-2022-29326 vulnerability.

Immediate Steps to Take

Immediately update D-Link DIR-816 A2_v1.10CNB04 to a non-vulnerable version if available. Implement network controls to restrict access to the affected system.

Long-Term Security Practices

Regularly monitor vendor security bulletins and apply patches promptly. Consider network segmentation and strong access controls to reduce the attack surface.

Patching and Updates

Ensure that you regularly check for firmware updates from D-Link and apply them as soon as they are released to address security vulnerabilities.