CVE-2021-40942 : Vulnerability Insights and Analysis

GPAC MP4Box v1.1.0 contains a heap-buffer-overflow vulnerability that can lead to a denial of service (DOS).

Understanding CVE-2021-40942

This CVE describes a specific vulnerability in GPAC MP4Box v1.1.0.

What is CVE-2021-40942?

The issue arises from a heap-buffer-overflow in the function filter_parse_dyn_args in filter_core/filter.c:1454 of GPAC, potentially causing a DOS.

The Impact of CVE-2021-40942

The vulnerability can be exploited to trigger a denial of service condition, impacting the availability of the affected system.

Technical Details of CVE-2021-40942

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

A heap-buffer-overflow occurs in GPAC MP4Box v1.1.0 due to improper validation of user-supplied input in the filter_parse_dyn_args function, leading to a potential DOS.

Affected Systems and Versions

Affected Version: GPAC MP4Box v1.1.0
Vendor: N/A
Products: N/A

Exploitation Mechanism

The issue can be exploited by an attacker providing malicious input to trigger the overflow, potentially causing a denial of service.

Mitigation and Prevention

Protecting systems from CVE-2021-40942 requires immediate action and long-term strategies.

Immediate Steps to Take

Implement patches or updates provided by the vendor to address the vulnerability.
Consider network segmentation to limit the impact of potential attacks.
Monitor for any unusual system behavior that could indicate exploitation.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate potential weaknesses.

Patching and Updates

Apply security patches from GPAC promptly to fix the heap-buffer-overflow vulnerability in GPAC MP4Box v1.1.0.