CVE-2021-42682 : Vulnerability Insights and Analysis

An Integer Overflow vulnerability exists in Accops HyWorks DVM Tools prior to v3.3.1.105. The IOCTL Handler 0x22001B allows local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

Understanding CVE-2021-42682

What is CVE-2021-42682?

The CVE-2021-42682 vulnerability involves an Integer Overflow in Accops HyWorks DVM Tools, enabling local attackers to execute malicious code in kernel mode or trigger a denial of service attack.

The Impact of CVE-2021-42682

This vulnerability can lead to local attackers executing arbitrary code at the kernel level or causing denial of service through memory corruption and OS crashes.

Technical Details of CVE-2021-42682

Vulnerability Description

The vulnerability stems from an Integer Overflow in Accops HyWorks DVM Tools, specifically in the IOCTL Handler 0x22001B, which can be exploited by attackers.

Affected Systems and Versions

Affected: Accops HyWorks DVM Tools prior to v3.3.1.105.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious I/O Request Packet to trigger the Integer Overflow.

Mitigation and Prevention

Immediate Steps to Take

Update Accops HyWorks DVM Tools to version v3.3.1.105 or later.
Implement strong kernel-level security measures.

Long-Term Security Practices

Regularly monitor and analyze I/O Request Packets for unusual patterns.
Conduct security training for staff on identifying and reporting suspicious activities.

Patching and Updates

Apply patches and updates provided by Accops to fix the Integer Overflow vulnerability.