CVE-2021-44919 : Exploit Details and Defense Strategies

A Null Pointer Dereference vulnerability exists in the gf_sg_vrml_mf_alloc function in gpac 1.1.0-DEV, leading to a segmentation fault and application crash.

Understanding CVE-2021-44919

This CVE highlights a critical flaw in the gpac software.

What is CVE-2021-44919?

The CVE-2021-44919 is a Null Pointer Dereference vulnerability in gpac 1.1.0-DEV, presenting a risk of crashing the application due to a segmentation fault.

The Impact of CVE-2021-44919

The vulnerability allows attackers to cause a denial of service (DoS) by crashing the application, posing a risk to system stability.

Technical Details of CVE-2021-44919

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The issue lies in the gf_sg_vrml_mf_alloc function in gpac 1.1.0-DEV, where a Null Pointer Dereference occurs, leading to a segmentation fault and application crash.

Affected Systems and Versions

Affected Version: gpac 1.1.0-DEV

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted requests to the affected function, triggering the Null Pointer Dereference and causing the application to crash.

Mitigation and Prevention

Protect your systems against CVE-2021-44919 with these strategies.

Immediate Steps to Take

Update gpac to a patched version to mitigate the vulnerability.
Implement strict input validation to prevent malicious inputs.

Long-Term Security Practices

Conduct regular security audits to identify and address vulnerabilities promptly.
Train developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Apply patches provided by the software provider to fix the Null Pointer Dereference vulnerability in gpac.