CVE-2020-21595 : What You Need to Know

CVE-2020-21595 involves a heap buffer overflow in the mc_luma function of libde265 v1.0.4, allowing exploitation through a crafted file.

Understanding CVE-2020-21595

What is CVE-2020-21595?

CVE-2020-21595 is a vulnerability in libde265 v1.0.4 that enables a heap buffer overflow in the mc_luma function, potentially leading to security breaches.

The Impact of CVE-2020-21595

The vulnerability can be exploited by malicious actors through specially crafted files, posing a risk of unauthorized access or denial of service.

Technical Details of CVE-2020-21595

Vulnerability Description

The heap buffer overflow occurs in the mc_luma function of libde265 v1.0.4, allowing attackers to execute arbitrary code or crash the application.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions are affected.

Exploitation Mechanism

The vulnerability can be exploited by manipulating a file to trigger the heap buffer overflow in the mc_luma function.

Mitigation and Prevention

Immediate Steps to Take

Update libde265 to a patched version that addresses the heap buffer overflow.
Avoid opening files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Implement file input validation to prevent malicious file execution.

Patching and Updates

Apply patches provided by the software vendor to fix the heap buffer overflow vulnerability in libde265.