CVE-2021-3575 : What You Need to Know

A heap-based buffer overflow vulnerability was discovered in OpenJPEG affecting versions up to v2.4.0. This flaw could allow an attacker to execute arbitrary code by exploiting a crafted .j2k file during decompression.

Understanding CVE-2021-3575

This section delves into the impact and technical details of the CVE-2021-3575 vulnerability.

What is CVE-2021-3575?

The CVE-2021-3575 vulnerability is a heap-based buffer overflow in OpenJPEG's sycc420_to_rgb function, allowing an attacker to potentially execute arbitrary code with the application's permissions.

The Impact of CVE-2021-3575

The impact of this vulnerability lies in the ability for an attacker to exploit a specially crafted .j2k file during decompression, leading to unauthorized arbitrary code execution.

Technical Details of CVE-2021-3575

Explore the specifics of the vulnerability, including affected systems, the exploitation mechanism, and recommended mitigation strategies.

Vulnerability Description

The vulnerability manifests as a heap-based buffer overflow in color.c:379:42 in the sycc420_to_rgb function of OpenJPEG, facilitating unauthorized code execution upon decompressing a malicious .j2k file.

Affected Systems and Versions

OpenJPEG versions up to v2.4.0 are susceptible to this vulnerability, potentially impacting systems that utilize the affected versions.

Exploitation Mechanism

An attacker can leverage a crafted .j2k file to trigger the heap-based buffer overflow in OpenJPEG, ultimately enabling the execution of malicious code within the application's context.

Mitigation and Prevention

Learn about the immediate steps to take and long-term security practices to safeguard against CVE-2021-3575.

Immediate Steps to Take

It is crucial to apply security patches promptly, implement appropriate access controls, and restrict network access to mitigate the risk associated with CVE-2021-3575.

Long-Term Security Practices

Incorporating regular security audits, maintaining updated software versions, and educating users on safe file handling practices are essential for bolstering long-term security resilience.

Patching and Updates

Stay informed about security advisories and updates from OpenJPEG, ensuring timely application of patches and fixes to address known vulnerabilities.