CVE-2021-42683 : Security Advisory and Response

A Buffer Overflow vulnerability in Accops HyWorks Windows Client prior to v 3.2.8.200 allows local attackers to execute arbitrary code or cause denial of service.

Understanding CVE-2021-42683

This CVE involves a Buffer Overflow vulnerability in Accops HyWorks Windows Client, potentially leading to arbitrary code execution or denial of service.

What is CVE-2021-42683?

A Buffer Overflow flaw in Accops HyWorks Windows Client allows local attackers to execute arbitrary code in kernel mode or cause a denial of service via crafted I/O Request Packets.

The Impact of CVE-2021-42683

Attackers can exploit the vulnerability to execute arbitrary code in kernel mode.
It may lead to a denial of service with memory corruption and OS crash.

Technical Details of CVE-2021-42683

This section delves into the technical aspects of the CVE.

Vulnerability Description

The IOCTL Handler 0x22001B in Accops HyWorks Windows Client is susceptible to Buffer Overflow, enabling local attackers to execute arbitrary code.

Affected Systems and Versions

Product: Accops HyWorks Windows Client
Versions affected: Prior to v 3.2.8.200

Exploitation Mechanism

The vulnerability can be exploited via specially crafted I/O Request Packets.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Update Accops HyWorks Windows Client to version 3.2.8.200 or newer.
Employ network segmentation to restrict access to affected systems.
Monitor for any suspicious activities.

Long-Term Security Practices

Regularly update and patch software to fix vulnerabilities.
Conduct security training for employees on identifying and reporting potential threats.

Patching and Updates

Install security patches promptly to mitigate the risk of exploitation.