CVE-2022-35218 : Security Advisory and Response

A heap-based buffer overflow vulnerability in the NHI card’s web service component could allow a LAN attacker to disrupt services by exploiting insufficient validation for a packet origin parameter length.

Understanding CVE-2022-35218

This CVE involves a vulnerability in the NHI card’s web service component that could be exploited by an attacker with general user privileges to cause service disruption.

What is CVE-2022-35218?

The NHI card’s web service component is impacted by a heap-based buffer overflow vulnerability due to inadequate validation of the packet origin parameter length. This flaw can be leveraged by an attacker to disrupt services.

The Impact of CVE-2022-35218

With a CVSS base score of 5.5, this vulnerability has a medium severity rating. An attacker with general user privileges on a LAN can exploit this flaw to disrupt services, leading to a high availability impact.

Technical Details of CVE-2022-35218

This section provides more insight into the vulnerability details, affected systems, and exploitation mechanisms.

Vulnerability Description

The NHI card’s web service component is susceptible to a heap-based buffer overflow due to insufficient validation of a packet origin parameter length, making it exploitable by an attacker with localized attack vector.

Affected Systems and Versions

The vulnerability affects the NHI card’s web service component running on Windows with version 'dae0509e5aabde2f110ce8418af67cf7'.

Exploitation Mechanism

An attacker with general user privileges within the LAN can exploit the insufficient validation for the packet origin parameter length to trigger a heap-based buffer overflow, leading to service disruption.

Mitigation and Prevention

To address CVE-2022-35218, it is crucial to take immediate steps to secure systems and implement long-term security measures.

Immediate Steps to Take

Download the latest version of the NHI card’s web service component to patch the vulnerability and prevent exploitation.

Long-Term Security Practices

Regularly update systems and software to ensure the latest security patches are applied.

Patching and Updates

Stay informed about security advisories from NHI and implement patches promptly to mitigate the risk of exploitation.