CVE-2022-47656 Explained : Impact and Mitigation

A buffer overflow vulnerability has been identified in GPAC MP4box 2.1-DEV-rev617-g85ce76efd affecting the gf_hevc_read_sps_bs_internal function of media_tools/av_parsers.c:8273.

Understanding CVE-2022-47656

This article provides insights into the CVE-2022-47656 vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2022-47656?

The CVE-2022-47656 vulnerability is a buffer overflow issue in GPAC MP4box 2.1-DEV-rev617-g85ce76efd, specifically in the gf_hevc_read_sps_bs_internal function of media_tools/av_parsers.c:8273.

The Impact of CVE-2022-47656

This vulnerability could allow an attacker to execute arbitrary code or crash the application, potentially leading to denial of service or remote code execution.

Technical Details of CVE-2022-47656

Here are the technical specifics of the CVE-2022-47656 vulnerability:

Vulnerability Description

The vulnerability resides in the gf_hevc_read_sps_bs_internal function of media_tools/av_parsers.c:8273, leading to a buffer overflow.

Affected Systems and Versions

The affected system includes GPAC MP4box 2.1-DEV-rev617-g85ce76efd.

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a malicious MP4 file to trigger the buffer overflow.

Mitigation and Prevention

To address CVE-2022-47656, consider the following mitigation strategies:

Immediate Steps to Take

Avoid opening or playing untrusted MP4 files.
Apply security updates or patches provided by GPAC.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Implement network security measures to prevent malicious file downloads.

Patching and Updates

Ensure timely installation of security patches and updates released by GPAC to address the CVE-2022-47656 vulnerability.