CVE-2020-22033 : Security Advisory and Response

A heap-based Buffer Overflow Vulnerability in FFmpeg 4.2 at libavfilter/vf_vmafmotion.c can lead to a Denial of Service attack.

Understanding CVE-2020-22033

This CVE involves a critical vulnerability in FFmpeg 4.2 that could be exploited by a remote malicious user to cause a Denial of Service.

What is CVE-2020-22033?

The vulnerability exists in the convolution_y_8bit function in libavfilter/vf_vmafmotion.c in FFmpeg 4.2, allowing an attacker to trigger a heap-based buffer overflow.

The Impact of CVE-2020-22033

Exploitation of this vulnerability could result in a Denial of Service condition, potentially disrupting the normal operation of the affected system.

Technical Details of CVE-2020-22033

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability is a heap-based buffer overflow in FFmpeg 4.2 at libavfilter/vf_vmafmotion.c, specifically in the convolution_y_8bit function.

Affected Systems and Versions

Product: FFmpeg 4.2
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability can be exploited by a remote malicious user to trigger the buffer overflow, leading to a Denial of Service.

Mitigation and Prevention

Protecting systems from CVE-2020-22033 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches or updates provided by the vendor to address the vulnerability.
Monitor network traffic for any signs of exploitation.
Implement strong access controls to limit potential attack surfaces.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.
Educate users and administrators about safe computing practices.

Patching and Updates

Ensure that the affected FFmpeg version is updated to a patched version that addresses the heap-based buffer overflow vulnerability.