CVE-2020-20891 Explained : Impact and Mitigation

A Buffer Overflow vulnerability in function config_input in libavfilter/vf_gblur.c in Ffmpeg 4.2.1 can lead to Denial of Service attacks or other unspecified impacts.

Understanding CVE-2020-20891

This CVE involves a specific vulnerability in Ffmpeg 4.2.1 that could be exploited by attackers.

What is CVE-2020-20891?

This CVE identifies a Buffer Overflow vulnerability in the config_input function within libavfilter/vf_gblur.c in Ffmpeg 4.2.1.

The Impact of CVE-2020-20891

The vulnerability allows attackers to trigger a Denial of Service (DoS) or other potential impacts on the affected systems.

Technical Details of CVE-2020-20891

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

Vulnerability Description

The vulnerability exists in the config_input function in libavfilter/vf_gblur.c in Ffmpeg 4.2.1, enabling attackers to exploit a Buffer Overflow.

Affected Systems and Versions

Affected Version: Ffmpeg 4.2.1
Systems using this specific version are vulnerable to the exploit.

Exploitation Mechanism

Attackers can exploit this vulnerability to execute a Denial of Service attack or potentially cause other unspecified impacts.

Mitigation and Prevention

Protecting systems from CVE-2020-20891 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Ffmpeg to a non-vulnerable version if available.
Implement network security measures to detect and block potential exploitation attempts.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories related to Ffmpeg and apply patches as soon as they are released.