CVE-2020-6631 Explained : Impact and Mitigation

An issue was discovered in GPAC version 0.8.0, leading to a NULL pointer dereference in the function gf_m2ts_stream_process_pmt() in media_tools/m2ts_mux.c.

Understanding CVE-2020-6631

This CVE identifies a vulnerability in GPAC version 0.8.0 that can result in a NULL pointer dereference.

What is CVE-2020-6631?

The vulnerability in GPAC version 0.8.0 allows attackers to trigger a NULL pointer dereference in a specific function, potentially leading to a denial of service or other impacts.

The Impact of CVE-2020-6631

The exploitation of this vulnerability could result in a crash of the application or potentially allow attackers to execute arbitrary code on the affected system.

Technical Details of CVE-2020-6631

This section provides technical details about the vulnerability.

Vulnerability Description

The issue lies in the function gf_m2ts_stream_process_pmt() in media_tools/m2ts_mux.c, where improper handling of NULL pointers can be exploited.

Affected Systems and Versions

Affected Version: GPAC 0.8.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious input that triggers the NULL pointer dereference in the specified function.

Mitigation and Prevention

To address CVE-2020-6631, follow these mitigation strategies:

Immediate Steps to Take

Update GPAC to a patched version that addresses the NULL pointer dereference.
Implement proper input validation to prevent malicious inputs.

Long-Term Security Practices

Regularly update software to the latest versions to patch known vulnerabilities.
Conduct security assessments and code reviews to identify and address potential vulnerabilities.

Patching and Updates

Ensure timely application of security patches and updates to mitigate the risk of exploitation.