CVE-2021-30199 : Exploit Details and Defense Strategies

A vulnerability has been discovered in GPAC 1.0.1 that leads to a Null Pointer Dereference when the function gf_filter_pck_get_data is invoked. This vulnerability can be exploited by a crafted mp4 file, resulting in a system crash.

Understanding CVE-2021-30199

This section delves into the critical aspects of CVE-2021-30199.

What is CVE-2021-30199?

The vulnerability in filters/reframe_latm.c in GPAC 1.0.1 triggers a Null Pointer Dereference when a specific function is called, enabling a crash through a specially crafted mp4 file.

The Impact of CVE-2021-30199

Exploitation of this CVE may lead to a denial of service (DoS) condition, causing affected systems to crash, impacting availability.

Technical Details of CVE-2021-30199

Explore the technical specifics of CVE-2021-30199.

Vulnerability Description

The issue arises in GPAC due to a flaw in the way certain data is processed, leading to a Null Pointer Dereference vulnerability.

Affected Systems and Versions

GPAC 1.0.1 is confirmed to be affected by this vulnerability, impacting systems leveraging this version.

Exploitation Mechanism

An attacker can exploit this vulnerability by creating a malicious mp4 file that triggers the Null Pointer Dereference, resulting in a system crash.

Mitigation and Prevention

Discover the necessary steps to mitigate the risks posed by CVE-2021-30199.

Immediate Steps to Take

Mitigate the risk by avoiding opening untrusted mp4 files or content from unverified sources to prevent exploitation.

Long-Term Security Practices

Ensure regular software updates and security patches are applied to prevent potential vulnerabilities from being exploited.

Patching and Updates

Stay informed about security updates released by GPAC and promptly install relevant patches to safeguard systems against known vulnerabilities.