CVE-2021-21945 : What You Need to Know

Accusoft ImageGear 19.10 is impacted by two heap-based buffer overflow vulnerabilities in the TIFF parser functionality, which can be exploited by a specially-crafted file. These vulnerabilities have a CVSS base score of 9.8, marking them as critical.

Understanding CVE-2021-21945

What is CVE-2021-21945?

Two heap-based buffer overflow vulnerabilities are present in Accusoft ImageGear 19.10's TIFF parser, allowing attackers to trigger a heap buffer overflow by providing a malicious file.

The Impact of CVE-2021-21945

The vulnerabilities have a high impact on confidentiality, integrity, and availability, with a base score of 9.8, indicating a critical severity issue.

Technical Details of CVE-2021-21945

Vulnerability Description

The vulnerabilities occur due to heap-based buffer overflows in the TIFF parser functionality of Accusoft ImageGear 19.10, enabling attackers to execute malicious code.

Affected Systems and Versions

Accusoft ImageGear version 19.10 is affected by these vulnerabilities.

Exploitation Mechanism

By providing a specially-crafted file, attackers can trigger the heap buffer overflow, compromising the targeted system's security.

Mitigation and Prevention

Immediate Steps to Take

It is recommended to update Accusoft ImageGear to a non-vulnerable version and avoid opening untrusted TIFF files to prevent exploitation.

Long-Term Security Practices

Regularly update software, apply security patches promptly, and follow secure coding practices to mitigate the risk of buffer overflow vulnerabilities.

Patching and Updates

Accusoft should release patches addressing the heap-based buffer overflow vulnerabilities in ImageGear 19.10 to safeguard users from potential exploitation.