CVE-2019-20168 : Security Advisory and Response

A vulnerability was found in GPAC versions 0.8.0 and 0.9.0-development-20191109, leading to a use-after-free issue within the gf_isom_box_dump_ex() function in isomedia/box_funcs.c.

Understanding CVE-2019-20168

This CVE identifies a specific vulnerability in GPAC software versions.

What is CVE-2019-20168?

CVE-2019-20168 is a use-after-free vulnerability present in GPAC versions 0.8.0 and 0.9.0-development-20191109, specifically within the gf_isom_box_dump_ex() function.

The Impact of CVE-2019-20168

The vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the use-after-free issue.

Technical Details of CVE-2019-20168

This section provides more technical insights into the CVE.

Vulnerability Description

The use-after-free flaw in the gf_isom_box_dump_ex() function in isomedia/box_funcs.c allows attackers to potentially execute malicious code or trigger a denial of service.

Affected Systems and Versions

GPAC version 0.8.0
GPAC version 0.9.0-development-20191109

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious input that triggers the use-after-free condition, leading to potential code execution or service disruption.

Mitigation and Prevention

Protecting systems from CVE-2019-20168 requires specific actions.

Immediate Steps to Take

Update GPAC to a patched version that addresses the use-after-free vulnerability.
Monitor for any unusual activities on the network that could indicate exploitation.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement strong input validation mechanisms to prevent exploitation of memory-related vulnerabilities.

Patching and Updates

Ensure that all systems running GPAC are updated to versions that have patched the use-after-free issue to mitigate the risk of exploitation.