CVE-2021-45863 : Security Advisory and Response

This CVE-2021-45863 article provides detailed information about a heap-based buffer overflow vulnerability found in tsMuxer git-2678966.

Understanding CVE-2021-45863

What is CVE-2021-45863?

tsMuxer git-2678966 is identified to have a heap-based buffer overflow through the function HevcUnit::updateBits in hevc.cpp.

The Impact of CVE-2021-45863

This vulnerability could allow an attacker to execute arbitrary code or crash the application, leading to a potential denial of service (DoS) attack.

Technical Details of CVE-2021-45863

Vulnerability Description

The vulnerability is a heap-based buffer overflow present in the HevcUnit::updateBits function in hevc.cpp within tsMuxer git-2678966.

Affected Systems and Versions

Affected Systems: Not specified
Affected Versions: Not specified

Exploitation Mechanism

The vulnerability can be exploited by an attacker to trigger the heap-based buffer overflow by crafting a specially designed input.

Mitigation and Prevention

Immediate Steps to Take

Users should avoid processing untrusted or malicious video files with tsMuxer git-2678966.
Consider using alternative software until a patch is available.

Long-Term Security Practices

Regularly update the software to the latest version to mitigate known vulnerabilities.
Implement network security measures to prevent unauthorized access to the application.

Patching and Updates

Vendor patches or updates for tsMuxer git-2678966 should be applied as soon as they are released.