CVE-2021-41456 Explained : Impact and Mitigation

CVE-2021-41456 is a stack buffer overflow vulnerability in MP4Box v1.0.1 that can lead to a denial of service. Read on to understand more about this security issue, its impact, technical details, and mitigation steps.

Understanding CVE-2021-41456

This section provides insights into the nature and implications of CVE-2021-41456.

What is CVE-2021-41456?

CVE-2021-41456 is a stack buffer overflow vulnerability present in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1004 in the nhmldmx_send_sample() function's szXmlTo parameter. This flaw can be exploited to trigger a denial of service (DoS) attack.

The Impact of CVE-2021-41456

The vulnerability can be exploited by a malicious actor to cause a denial of service condition on the affected system, potentially disrupting services or causing system downtime.

Technical Details of CVE-2021-41456

Delve into the technical aspects of CVE-2021-41456 to understand the specific details of this security issue.

Vulnerability Description

The vulnerability resides in the nhmldmx_send_sample() function's handling of the szXmlTo parameter, leading to a stack buffer overflow.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Affected Version: n/a

Exploitation Mechanism

The vulnerability can be exploited by crafting a specially designed MP4 file, potentially leading to buffer overflow and denial of service.

Mitigation and Prevention

Learn about the steps to mitigate the risks posed by CVE-2021-41456 and prevent potential exploitation.

Immediate Steps to Take

Disable MP4 file processing until a patch is available.
Monitor security advisories for updates and patches.

Long-Term Security Practices

Regularly update software and systems to patch known vulnerabilities.
Implement boundary checks and input validation in software development processes.

Patching and Updates

Apply security patches provided by the software vendor promptly to address the stack buffer overflow vulnerability in MP4Box v1.0.1.