CVE-2020-21604 : Exploit Details and Defense Strategies

CVE-2020-21604 is a vulnerability found in libde265 v1.0.4 due to a heap buffer overflow fault in the _mm_loadl_epi64 function, which can be exploited through a crafted file.

Understanding CVE-2020-21604

This CVE identifies a specific vulnerability in the libde265 library that can lead to security issues.

What is CVE-2020-21604?

The vulnerability in libde265 v1.0.4 arises from a heap buffer overflow fault in the _mm_loadl_epi64 function, making it susceptible to exploitation via a specially crafted file.

The Impact of CVE-2020-21604

This vulnerability can potentially allow attackers to execute arbitrary code or cause a denial of service by exploiting the heap buffer overflow in libde265 v1.0.4.

Technical Details of CVE-2020-21604

Vulnerability Description

The vulnerability is a heap buffer overflow fault in the _mm_loadl_epi64 function within libde265 v1.0.4.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can exploit this vulnerability by using a specially crafted file to trigger the heap buffer overflow in libde265 v1.0.4.

Mitigation and Prevention

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update software and libraries to the latest secure versions.
Implement proper input validation mechanisms to prevent buffer overflows.

Patching and Updates

Apply patches provided by the libde265 project to fix the heap buffer overflow vulnerability.