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CVE-2021-21807 : Vulnerability Insights and Analysis

Learn about CVE-2021-21807, a critical integer overflow vulnerability in Accusoft ImageGear 19.9 that allows attackers to trigger a stack-based buffer overflow by exploiting a specially crafted file.

A critical integer overflow vulnerability has been identified in Accusoft ImageGear 19.9, specifically in the DICOM parse_dicom_meta_info functionality. This flaw can be exploited by an attacker through a specially crafted file to trigger a stack-based buffer overflow.

Understanding CVE-2021-21807

This CVE details a severe vulnerability in the popular imaging software, Accusoft ImageGear 19.9.

What is CVE-2021-21807?

The vulnerability in Accusoft ImageGear 19.9 allows an attacker to execute a stack-based buffer overflow by providing a specially crafted malicious file.

The Impact of CVE-2021-21807

With a CVSS base score of 9.8 out of 10, this critical vulnerability poses a high risk to confidentiality, integrity, and availability of affected systems. Attackers can exploit this flaw without any special privileges and without user interaction, making it particularly dangerous.

Technical Details of CVE-2021-21807

Here are the specifics of the CVE:

Vulnerability Description

Accusoft ImageGear 19.9 is susceptible to an integer overflow vulnerability in the DICOM parse_dicom_meta_info function. The flaw can result in a stack-based buffer overflow upon processing a malformed file.

Affected Systems and Versions

The affected product is Accusoft ImageGear 19.9.

Exploitation Mechanism

An attacker can exploit this vulnerability by providing a specially crafted, malicious file to the target system, triggering the stack-based buffer overflow.

Mitigation and Prevention

To address CVE-2021-21807, consider the following steps:

Immediate Steps to Take

Ensure that all systems running Accusoft ImageGear 19.9 are updated with the latest patches. Implement network monitoring to detect any suspicious activity.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities from being exploited. Conduct security training for users to recognize and report suspicious files.

Patching and Updates

Stay informed about security updates released by Accusoft and apply them promptly to mitigate the risk of exploitation.

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