CVE-2021-42990 : What You Need to Know

FlexiHub For Windows is affected by a Buffer Overflow vulnerability, allowing local attackers to execute arbitrary code or cause a denial of service. This CVE has been published by MITRE.

Understanding CVE-2021-42990

What is CVE-2021-42990?

FlexiHub For Windows versions above 2.0.4340 and below 5.3.14268 are susceptible to a Buffer Overflow issue in the IOCTL Handler 0x22001B, enabling local attackers to trigger arbitrary code execution in kernel mode or disrupt the system through crafted I/O Request Packets.

The Impact of CVE-2021-42990

The vulnerability could lead to memory corruption, system crashes, and unauthorized kernel code execution, posing a significant security risk to affected systems and potentially compromising data integrity.

Technical Details of CVE-2021-42990

Vulnerability Description

The flaw in IOCTL Handler 0x22001B of FlexiHub For Windows allows local attackers to exploit Buffer Overflow, opening avenues for executing malicious code or causing service denial.

Affected Systems and Versions

Product: FlexiHub For Windows
Versions Affected: Above 2.0.4340 to below 5.3.14268

Exploitation Mechanism

The vulnerability is exploited by local attackers through specially crafted I/O Request Packets to trigger arbitrary code execution or disrupt the system.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches and updates from the vendor promptly.
Implement least privilege access for users to mitigate potential impact.
Monitor system logs and network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Educate users on safe computing practices and the dangers of opening untrusted documents or links.

Patching and Updates

Regularly check for updates and security advisories from FlexiHub For Windows vendor and apply patches as soon as they are released.