CVE-2021-21938 : Security Advisory and Response

A heap-based buffer overflow vulnerability in Accusoft ImageGear 19.10 allows malicious files to trigger code execution.

Understanding CVE-2021-21938

This CVE involves a critical heap-based buffer overflow vulnerability in Accusoft ImageGear 19.10, impacting the Palette box parser functionality.

What is CVE-2021-21938?

Accusoft ImageGear 19.10 is affected by a heap-based buffer overflow flaw, potentially leading to remote code execution when processing a specially-crafted file.

The Impact of CVE-2021-21938

The vulnerability poses a critical risk as an attacker can exploit it by providing a malicious file, resulting in arbitrary code execution.

Technical Details of CVE-2021-21938

This section discusses the specific details related to the vulnerability.

Vulnerability Description

The vulnerability arises in the Palette box parser functionality of Accusoft ImageGear 19.10 due to an off-by-one error (CWE-193), allowing an attacker to achieve code execution by crafting a malicious file.

Affected Systems and Versions

Accusoft ImageGear 19.10 is the affected version by this critical vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by an attacker supplying a specially-crafted file to the affected system, triggering the heap-based buffer overflow and potentially achieving remote code execution.

Mitigation and Prevention

Protecting systems from CVE-2021-21938 requires immediate action and ongoing security practices.

Immediate Steps to Take

Update Accusoft ImageGear to the latest version to patch the vulnerability.
Implement network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly apply security patches and updates to all software components.
Conduct security training for employees to recognize and avoid malicious files.

Patching and Updates

Accusoft has released updates to address the vulnerability in ImageGear 19.10, and users are advised to apply the latest patches to secure their systems.