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CVE-2021-21943 : Security Advisory and Response

Learn about CVE-2021-21943, a critical heap-based buffer overflow vulnerability in Accusoft ImageGear 19.10 that allows code execution. Find out the impact, affected systems, and mitigation steps.

A heap-based buffer overflow vulnerability in Accusoft ImageGear 19.10 allows an attacker to execute code by providing a specially-crafted file.

Understanding CVE-2021-21943

This CVE involves a critical vulnerability in the XWD parser functionality of ImageGear 19.10.

What is CVE-2021-21943?

The CVE-2021-21943 is a heap-based buffer overflow vulnerability in Accusoft ImageGear 19.10, which can be exploited by a malicious actor to achieve code execution by using a specifically crafted file.

The Impact of CVE-2021-21943

With a CVSS base score of 9.8, this critical vulnerability poses a high risk to confidentiality, integrity, and availability of affected systems. An attacker can exploit this vulnerability remotely without requiring any special privileges or user interaction.

Technical Details of CVE-2021-21943

This section covers the technical aspects of the vulnerability.

Vulnerability Description

The heap-based buffer overflow in the XWD parser functionality of Accusoft ImageGear 19.10 allows an attacker to execute arbitrary code by providing a malicious file.

Affected Systems and Versions

Accusoft ImageGear version 19.10 is affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a malicious file and providing it to the target system, triggering the buffer overflow and potentially leading to code execution.

Mitigation and Prevention

To protect your system from CVE-2021-21943, consider the following mitigation strategies.

Immediate Steps to Take

        Apply the vendor-released security patches for ImageGear 19.10 promptly.
        Implement network-level protections to detect and block potentially malicious input files.

Long-Term Security Practices

        Regularly update and patch all software and applications to address known vulnerabilities.
        Conduct security training for users to increase awareness of social engineering tactics used by attackers.

Patching and Updates

Stay informed about security updates and advisories released by Accusoft. Implement a robust patch management process to ensure timely deployment of fixes.

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