CVE-2020-11558 : Security Advisory and Response

An issue was discovered in libgpac.a in GPAC 0.8.0, as demonstrated by MP4Box. This vulnerability can lead to use-after-free outcomes in certain functions within the software.

Understanding CVE-2020-11558

This CVE identifies a specific vulnerability in GPAC 0.8.0 that can result in use-after-free scenarios, potentially leading to security risks.

What is CVE-2020-11558?

The vulnerability in libgpac.a in GPAC 0.8.0 allows attackers to trigger use-after-free issues by manipulating certain functions, potentially leading to exploitation.

The Impact of CVE-2020-11558

The vulnerability can result in various use-after-free outcomes involving specific functions within the software, such as mdia_Read, gf_isom_delete_movie, and gf_isom_parse_movie_boxes.

Technical Details of CVE-2020-11558

This section provides more in-depth technical details about the vulnerability.

Vulnerability Description

The issue lies in the audio_sample_entry_Read function in isomedia/box_code_base.c, where improper decision-making regarding gf_isom_box_del calls can be exploited.

Affected Systems and Versions

Affected Version: GPAC 0.8.0
Product: GPAC
Vendor: N/A

Exploitation Mechanism

The vulnerability can be exploited by manipulating the audio_sample_entry_Read function, leading to use-after-free outcomes in mdia_Read, gf_isom_delete_movie, and gf_isom_parse_movie_boxes.

Mitigation and Prevention

To address CVE-2020-11558, follow these mitigation strategies:

Immediate Steps to Take

Apply patches or updates provided by the software vendor.
Monitor security advisories for any new information or updates regarding this vulnerability.

Long-Term Security Practices

Regularly update software and systems to ensure the latest security patches are in place.
Conduct security assessments and audits to identify and address any potential vulnerabilities.

Patching and Updates

Stay informed about patches or updates released by GPAC to address this vulnerability.