CVE-2021-21795 : What You Need to Know

A heap-based buffer overflow vulnerability in Accusoft ImageGear 19.9 allows attackers to trigger a heap buffer overflow by providing a specially crafted file.

Understanding CVE-2021-21795

This CVE describes a critical vulnerability in Accusoft ImageGear 19.9 that can be exploited by an attacker to execute malicious code.

What is CVE-2021-21795?

CVE-2021-21795 is a heap-based buffer overflow vulnerability in the PSD read_icc_icCurve_data functionality of Accusoft ImageGear 19.9. It occurs due to a specially crafted malformed file that can lead to an integer overflow, resulting in a heap buffer overflow.

The Impact of CVE-2021-21795

With a CVSS base score of 9.8 (Critical), this vulnerability has a significant impact on confidentiality, integrity, and availability. Attackers can exploit it remotely without requiring any privileges.

Technical Details of CVE-2021-21795

This section provides more in-depth technical details regarding the vulnerability.

Vulnerability Description

The vulnerability arises from a heap-based buffer overflow in the PSD read_icc_icCurve_data functionality of Accusoft ImageGear 19.9, allowing attackers to execute arbitrary code by providing a specially crafted file.

Affected Systems and Versions

Accusoft ImageGear 19.9 is the only confirmed affected version by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking a user into opening a malicious file that triggers the heap buffer overflow, leading to potential code execution.

Mitigation and Prevention

To protect systems from CVE-2021-21795, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Update Accusoft ImageGear to a patched version to mitigate the vulnerability.
Ensure employees are educated on the risks of opening unknown or suspicious files.

Long-Term Security Practices

Employ network monitoring and intrusion detection systems to detect unusual behavior.
Regularly update and patch software to guard against known vulnerabilities.

Patching and Updates

Accusoft may release security patches or updates to address CVE-2021-21795; ensure timely installation to enhance system security.