CVE-2021-38090 : What You Need to Know
Learn about CVE-2021-38090, an Integer Overflow vulnerability in Ffmpeg 4.2.1, allowing attackers to trigger a Denial of Service or other adverse impacts. Find out the impact, affected systems, and mitigation steps.
A vulnerability known as an Integer Overflow has been identified in the function filter16_roberts in libavfilter/vf_convolution.c in Ffmpeg 4.2.1. This vulnerability allows attackers to trigger a Denial of Service attack or potentially cause other unspecified impacts.
Understanding CVE-2021-38090
This section provides insights into the nature of CVE-2021-38090.
What is CVE-2021-38090?
CVE-2021-38090 is an Integer Overflow vulnerability present in Ffmpeg 4.2.1, specifically in the function filter16_roberts within libavfilter/vf_convolution.c. Attackers can exploit this vulnerability to launch a Denial of Service attack or other adverse actions.
The Impact of CVE-2021-38090
The impact of this vulnerability includes the ability for malicious actors to disrupt the service and potentially cause further unspecified damage to affected systems.
Technical Details of CVE-2021-38090
In this section, we delve into the technical aspects of CVE-2021-38090.
Vulnerability Description
The vulnerability lies in an Integer Overflow in the filter16_roberts function in Ffmpeg 4.2.1, which can be exploited by threat actors.
Affected Systems and Versions
Ffmpeg 4.2.1 is the specific version affected by this vulnerability. Other versions may not be impacted.
Exploitation Mechanism
Threat actors can exploit this vulnerability by manipulating the filter16_roberts function in libavfilter/vf_convolution.c, leading to a Denial of Service or other adverse outcomes.
Mitigation and Prevention
This section outlines how to mitigate and prevent the risks posed by CVE-2021-38090.
Immediate Steps to Take
Immediate steps include updating Ffmpeg to a non-vulnerable version and implementing additional security measures.
Long-Term Security Practices
Long-term security practices involve regularly updating software, conducting security assessments, and staying informed about new vulnerabilities.
Patching and Updates
Ensure timely installation of patches and updates for Ffmpeg to address the CVE-2021-38090 vulnerability.