CVE-2021-32440 : What You Need to Know
Learn about CVE-2021-32440, a vulnerability in GPAC 1.0.1's Media_RewriteODFrame function that allows denial of service attacks via crafted files in the MP4Box command. Find mitigation steps here.
GPAC 1.0.1's Media_RewriteODFrame function is vulnerable to a denial of service attack. Attackers can exploit this issue via a crafted file in the MP4Box command. Learn more about CVE-2021-32440 and how to protect your systems.
Understanding CVE-2021-32440
This section provides an overview of the CVE-2021-32440 vulnerability in GPAC 1.0.1.
What is CVE-2021-32440?
The Media_RewriteODFrame function in GPAC 1.0.1 is susceptible to a denial of service attack, initiated by a NULL pointer dereference caused by a malicious file in the MP4Box command.
The Impact of CVE-2021-32440
The exploitation of this vulnerability can lead to a denial of service condition, affecting the availability and reliability of systems that utilize GPAC 1.0.1.
Technical Details of CVE-2021-32440
In this section, we dive into the technical aspects of CVE-2021-32440.
Vulnerability Description
The vulnerability in GPAC 1.0.1 allows attackers to trigger a NULL pointer dereference, resulting in a denial of service through a specifically crafted file input in the MP4Box command.
Affected Systems and Versions
The affected version is GPAC 1.0.1. Systems utilizing this specific version are at risk of exploitation if exposed to malicious inputs through the MP4Box command.
Exploitation Mechanism
Attackers can exploit this vulnerability by providing a specially designed file as input to the MP4Box command, triggering the NULL pointer dereference and causing a denial of service.
Mitigation and Prevention
Protecting your systems from CVE-2021-32440 is crucial. Here are some mitigation techniques and best practices to consider.
Immediate Steps to Take
- Apply patches or updates released by GPAC to address the vulnerability promptly.
- Restrict access to the MP4Box command to prevent unauthorized inputs.
Long-Term Security Practices
- Regularly update GPAC and other software components to ensure the latest security fixes are in place.
- Implement input validation mechanisms to filter out potentially harmful files.
Patching and Updates
Stay informed about security advisories from GPAC and apply patches or updates as soon as they are available to protect your systems from CVE-2021-32440.