CVE-2021-42688 : Security Advisory and Response
Learn about CVE-2021-42688, an Integer Overflow vulnerability in Accops HyWorks Windows Client allowing attackers to execute code in kernel mode or trigger denial of service attacks. Find mitigation steps and prevention strategies.
An Integer Overflow vulnerability exists in Accops HyWorks Windows Client prior to v 3.2.8.200. The vulnerability allows local attackers to execute arbitrary code in kernel mode or cause a denial of service via specially crafted I/O Request Packet.
Understanding CVE-2021-42688
This CVE describes a critical vulnerability in Accops HyWorks Windows Client.
What is CVE-2021-42688?
CVE-2021-42688 is an Integer Overflow vulnerability in Accops HyWorks Windows Client, allowing local attackers to execute arbitrary code in kernel mode or trigger a denial of service attack.
The Impact of CVE-2021-42688
The vulnerability can result in memory corruption, OS crashes, and potentially lead to unauthorized code execution on the affected system.
Technical Details of CVE-2021-42688
Accops HyWorks Windows Client prior to v 3.2.8.200 is susceptible to this vulnerability.
Vulnerability Description
The issue lies in the IOCTL Handler 0x22005B, enabling attackers to exploit the vulnerability through specially crafted I/O Request Packets.
Affected Systems and Versions
- Affected Systems: Accops HyWorks Windows Client
- Affected Version: Prior to v 3.2.8.200
Exploitation Mechanism
- Local attackers can launch arbitrary code execution in kernel mode or carry out a denial of service attack using malicious I/O Request Packets.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-42688.
Immediate Steps to Take
- Upgrade Accops HyWorks Windows Client to version 3.2.8.200 or newer.
- Monitor and restrict I/O Request Packet handling.
Long-Term Security Practices
- Regular security assessments and code reviews.
- Implement least privilege access.
- Keep systems and software up to date.
- Educate users about safe computing practices.
- Implement network segmentation to contain potential attacks.
- Use endpoint protection solutions.
Patching and Updates
- Apply official patches provided by Accops for Accops HyWorks Windows Client.
- Stay informed about security advisories and updates.