CVE-2021-35346 Explained : Impact and Mitigation

A heap-based buffer overflow vulnerability was discovered in tsMuxer v2.6.16 through the function HevcSpsUnit::short_term_ref_pic_set(int) in hevc.cpp.

Understanding CVE-2021-35346

This CVE relates to a specific vulnerability found in tsMuxer v2.6.16.

What is CVE-2021-35346?

tsMuxer v2.6.16 was found to have a heap-based buffer overflow via the function HevcSpsUnit::short_term_ref_pic_set(int) in hevc.cpp.

The Impact of CVE-2021-35346

The vulnerability could potentially allow attackers to execute arbitrary code or cause a denial of service by triggering the buffer overflow.

Technical Details of CVE-2021-35346

This section covers the specific technical aspects of the vulnerability.

Vulnerability Description

tsMuxer v2.6.16 is affected by a heap-based buffer overflow due to improper input validation in the HevcSpsUnit::short_term_ref_pic_set(int) function.

Affected Systems and Versions

The affected version is tsMuxer v2.6.16.

Exploitation Mechanism

By crafting a malicious input and exploiting the mentioned function, an attacker can trigger the heap-based buffer overflow.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-35346.

Immediate Steps to Take

Users are advised to update tsMuxer to a non-vulnerable version and avoid processing untrusted media files.

Long-Term Security Practices

Practicing secure coding, input validation, and monitoring for security updates can help prevent buffer overflow vulnerabilities.

Patching and Updates

Stay informed about security patches for tsMuxer and promptly apply them to safeguard against known vulnerabilities.