CVE-2021-42987 : Vulnerability Insights and Analysis

Eltima USB Network Gate is affected by an Integer Overflow vulnerability, allowing local attackers to execute arbitrary code in kernel mode or cause a denial of service. Learn more about the impact, technical details, and mitigation steps.

Understanding CVE-2021-42987

What is CVE-2021-42987?

Eltima USB Network Gate versions above 7.0.1370 and below 9.2.2420 are vulnerable to Integer Overflow via IOCTL Handler 0x22001B, enabling attackers to trigger memory corruption and OS crashes.

The Impact of CVE-2021-42987

The vulnerability allows local attackers to execute arbitrary code in kernel mode or launch denial-of-service attacks, compromising system integrity and stability.

Technical Details of CVE-2021-42987

Vulnerability Description

An Integer Overflow in IOCTL Handler 0x22001B of Eltima USB Network Gate can be exploited by local attackers using specially crafted I/O Request Packets to compromise system security.

Affected Systems and Versions

Products: Not Applicable
Vendor: Not Applicable
Versions: above 7.0.1370, below 9.2.2420

Exploitation Mechanism

Attackers can exploit the vulnerability by sending malicious I/O Request Packets, triggering memory corruption and potentially leading to arbitrary code execution or system crashes.

Mitigation and Prevention

Immediate Steps to Take

Disable or restrict access to affected versions of Eltima USB Network Gate.
Implement strong firewall rules to limit unauthorized network traffic.

Long-Term Security Practices

Regularly update software to patched versions.
Conduct security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply official patches and updates provided by Eltima for USB Network Gate to address the Integer Overflow vulnerability.