CVE-2021-36410 : What You Need to Know

A stack-buffer-overflow vulnerability exists in libde265 v1.0.8, specifically in the fallback-motion.cc function put_epel_hv_fallback when running the dec265 program.

Understanding CVE-2021-36410

This section provides an overview of the CVE-2021-36410 vulnerability.

What is CVE-2021-36410?

CVE-2021-36410 is a stack-buffer-overflow vulnerability identified in libde265 v1.0.8. The issue is present in the put_epel_hv_fallback function within the fallback-motion.cc file when the dec265 program is executed.

The Impact of CVE-2021-36410

The vulnerability could be exploited by an attacker to potentially execute arbitrary code or cause a denial of service by triggering a stack buffer overflow.

Technical Details of CVE-2021-36410

In this section, we delve into the technical specifics of CVE-2021-36410.

Vulnerability Description

The stack-buffer-overflow in libde265 v1.0.8 occurs due to improper bounds checking within the put_epel_hv_fallback function, allowing an attacker to overwrite the stack buffer and execute malicious code.

Affected Systems and Versions

All systems running libde265 v1.0.8 are vulnerable to CVE-2021-36410. The specific affected versions include n/a.

Exploitation Mechanism

Exploitation of this vulnerability involves crafting a malicious input that triggers the stack buffer overflow in the put_epel_hv_fallback function, potentially leading to arbitrary code execution.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent the exploitation of CVE-2021-36410.

Immediate Steps to Take

Avoid running the dec265 program until a patch is available.
Monitor vendor sources for security updates related to libde265.

Long-Term Security Practices

Regularly update the libde265 library to the latest secure version.
Conduct routine security assessments and code reviews to identify and mitigate potential vulnerabilities.

Patching and Updates

For CVE-2021-36410, ensure to apply security updates provided by libde265 to address the stack-buffer-overflow vulnerability.