CVE-2021-40567 : Vulnerability Insights and Analysis

This CVE article provides insights into a segmentation fault vulnerability in Gpac (GPAC: Multimedia Framework) through version 1.0.1, causing denial of service.

Understanding CVE-2021-40567

This section delves into the specifics of the identified vulnerability.

What is CVE-2021-40567?

The vulnerability stems from a segmentation fault issue in Gpac via the gf_odf_size_descriptor function in desc_private.c when utilizing mp4box. This flaw leads to a denial of service.

The Impact of CVE-2021-40567

The presence of this vulnerability allows malicious actors to trigger a denial of service attack on systems running the affected version of Gpac.

Technical Details of CVE-2021-40567

Exploring the technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in Gpac versions up to 1.0.1, particularly within the gf_odf_size_descriptor function in desc_private.c when mp4box is in use. This flaw can be exploited for a denial of service attack.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions up to 1.0.1 are affected.

Exploitation Mechanism

The vulnerability is exploited through the gf_odf_size_descriptor function in desc_private.c when utilizing mp4box, causing the system to crash and resulting in a denial of service state.

Mitigation and Prevention

Guidelines to mitigate the impact and prevent future occurrences.

Immediate Steps to Take

Organizations using Gpac should update to the latest version to mitigate the vulnerability.
Monitor for any unusual system behavior.

Long-Term Security Practices

Conduct regular security assessments and audits.
Implement network segmentation to contain potential attacks.

Patching and Updates

Stay informed about security updates and patches released by the Gpac project.