CVE-2021-45831 Explained : Impact and Mitigation

A Null Pointer Dereference vulnerability exists in GPAC 1.0.1 in MP4Box via __strlen_avx2, leading to a Denial of Service.

Understanding CVE-2021-45831

A vulnerability in GPAC 1.0.1 in MP4Box could be exploited, causing a Denial of Service.

What is CVE-2021-45831?

This CVE refers to a Null Pointer Dereference vulnerability in GPAC 1.0.1 in MP4Box through __strlen_avx2 function, resulting in a Denial of Service.

The Impact of CVE-2021-45831

The vulnerability can be exploited to trigger a Denial of Service, potentially disrupting services relying on the affected system.

Technical Details of CVE-2021-45831

Vulnerability Description

A Null Pointer Dereference vulnerability in GPAC 1.0.1 in MP4Box via __strlen_avx2 leads to a Denial of Service due to improper error handling.

Affected Systems and Versions

Vendor: Not applicable
Product: Not applicable
Affected Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by triggering the __strlen_avx2 function in MP4Box, resulting in a Null Pointer Dereference and subsequent Denial of Service.

Mitigation and Prevention

Immediate Steps to Take

Monitor vendor updates for patches or mitigations
Apply security best practices for software development and testing
Implement access controls to limit potential attack vectors

Long-Term Security Practices

Perform regular security audits and code reviews
Train staff on identifying and reporting security vulnerabilities
Stay informed about emerging threats and security best practices

Patching and Updates

Check for patches or updates from the vendor
Apply security patches as soon as they are available to mitigate the vulnerability.