CVE-2020-21602 : Vulnerability Insights and Analysis

CVE-2020-21602 is a vulnerability found in libde265 v1.0.4, involving a heap buffer overflow in the put_weighted_bipred_16_fallback function.

Understanding CVE-2020-21602

This CVE identifies a specific security issue within the libde265 library.

What is CVE-2020-21602?

The vulnerability in libde265 v1.0.4 allows for a heap buffer overflow, which can be triggered by a specially crafted file.

The Impact of CVE-2020-21602

Exploitation of this vulnerability could lead to arbitrary code execution or denial of service attacks.

Technical Details of CVE-2020-21602

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from improper handling of data in the put_weighted_bipred_16_fallback function, leading to a heap buffer overflow.

Affected Systems and Versions

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

Exploitation Mechanism

An attacker can exploit this vulnerability by providing a malicious file that triggers the heap buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2020-21602 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Implement file input validation to prevent malicious inputs.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security audits and code reviews.
Educate users on safe file handling practices.
Keep software and libraries up to date to prevent known vulnerabilities.

Patching and Updates

Ensure that the libde265 library is updated to a patched version that addresses the heap buffer overflow vulnerability.