CVE-2019-20632 : Vulnerability Insights and Analysis

A vulnerability has been identified in GPAC version 0.8.0 and earlier, specifically in libgpac.a. This flaw can lead to a denial of service when exploited through a manipulated MP4 file.

Understanding CVE-2019-20632

This CVE involves an invalid pointer dereference in the function gf_odf_delete_descriptor within the odf/desc_private.c file.

What is CVE-2019-20632?

The vulnerability in libgpac.a in GPAC version 0.8.0 or earlier can be triggered by MP4Box, resulting in a denial of service due to an invalid pointer dereference.

The Impact of CVE-2019-20632

Exploitation through a crafted MP4 file can lead to a denial of service attack, potentially disrupting the availability of the affected system.

Technical Details of CVE-2019-20632

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue lies in an invalid pointer dereference in the function gf_odf_delete_descriptor within the odf/desc_private.c file.

Affected Systems and Versions

GPAC version 0.8.0 and earlier

Exploitation Mechanism

The vulnerability can be exploited through a manipulated MP4 file, specifically triggered by MP4Box.

Mitigation and Prevention

To address CVE-2019-20632, follow these mitigation strategies:

Immediate Steps to Take

Update GPAC to version 0.8.0 or later to patch the vulnerability
Avoid opening or processing untrusted MP4 files

Long-Term Security Practices

Regularly update software and libraries to the latest versions
Implement file validation checks to detect malicious MP4 files

Patching and Updates

Apply patches and updates provided by GPAC to fix the vulnerability