CVE-2020-22021 Explained : Impact and Mitigation

FFmpeg 4.2 is affected by a Buffer Overflow vulnerability in the filter_edges function in libavfilter/vf_yadif.c. This flaw could be exploited by a remote attacker to cause a Denial of Service.

Understanding CVE-2020-22021

This CVE entry describes a specific vulnerability in FFmpeg 4.2 that could lead to a Denial of Service attack.

What is CVE-2020-22021?

The CVE-2020-22021 vulnerability is a Buffer Overflow issue in FFmpeg 4.2 at the filter_edges function in libavfilter/vf_yadif.c. It allows a remote malicious user to trigger a Denial of Service.

The Impact of CVE-2020-22021

The impact of this vulnerability is the potential for a remote attacker to exploit the Buffer Overflow issue, leading to a Denial of Service condition on the affected system.

Technical Details of CVE-2020-22021

FFmpeg 4.2 is susceptible to a Buffer Overflow vulnerability in the filter_edges function in libavfilter/vf_yadif.c.

Vulnerability Description

The vulnerability in FFmpeg 4.2 allows a remote malicious user to exploit a Buffer Overflow issue, potentially resulting in a Denial of Service.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker sending specially crafted input to the filter_edges function in libavfilter/vf_yadif.c, triggering the Buffer Overflow and causing a Denial of Service.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-22021.

Immediate Steps to Take

Apply the security update provided by the vendor promptly.
Monitor for any unusual network activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch all software to prevent known vulnerabilities.
Implement network security measures to detect and block malicious traffic.

Patching and Updates

Refer to the vendor's security advisory for patching instructions and update procedures.