CVE-2021-40566 Explained : Impact and Mitigation

This CVE record discusses a Segmentation fault caused by a heap use after free vulnerability in Gpac through 1.0.1, leading to a denial of service.

Understanding CVE-2021-40566

This section provides an overview of the vulnerability.

What is CVE-2021-40566?

The CVE-2021-40566 vulnerability involves Gpac through version 1.0.1, specifically affecting the mpgviddmx_process function in reframe_mpgvid.c when using mp4box. The issue triggers a Segmentation fault due to a heap use after free vulnerability, resulting in a denial of service.

The Impact of CVE-2021-40566

The vulnerability allows attackers to cause a denial of service, potentially disrupting services and affecting system availability.

Technical Details of CVE-2021-40566

Explore the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability stems from a Segmentation fault caused by a heap use after free issue in Gpac through version 1.0.1.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Affected Version: n/a

Exploitation Mechanism

The vulnerability can be exploited by manipulating specific functionalities in Gpac through version 1.0.1, triggering the heap use after free condition and subsequently leading to a denial of service.

Mitigation and Prevention

Learn how to mitigate the impact and prevent similar vulnerabilities.

Immediate Steps to Take

Update Gpac to a patched version if available.
Implement network-level controls to restrict access.

Long-Term Security Practices

Conduct regular security assessments and audits.
Train staff on secure coding practices.
Monitor and analyze system logs for suspicious activities.

Patching and Updates

Stay informed about security patches and updates released by Gpac. Apply patches promptly to prevent exploitation of known vulnerabilities.