CVE-2017-15186 Explained : Impact and Mitigation

A vulnerability related to double free has been identified in versions of FFmpeg prior to 3.3.4. This vulnerability could be exploited by remote attackers to disrupt the functionality of FFmpeg by using a specially crafted AVI file.

Understanding CVE-2017-15186

This CVE entry highlights a double free vulnerability in FFmpeg versions before 3.3.4, allowing remote attackers to potentially cause a denial of service by leveraging a maliciously crafted AVI file.

What is CVE-2017-15186?

The CVE-2017-15186 vulnerability is a double free flaw in FFmpeg versions earlier than 3.3.4, enabling attackers to trigger a denial of service through a specifically crafted AVI file.

The Impact of CVE-2017-15186

This vulnerability poses a risk of remote attackers disrupting FFmpeg's operations by exploiting the double free issue, potentially leading to a denial of service.

Technical Details of CVE-2017-15186

This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in FFmpeg versions prior to 3.3.4 allows remote attackers to execute a denial of service attack by utilizing a crafted AVI file that triggers a double free condition.

Affected Systems and Versions

FFmpeg versions before 3.3.4

Exploitation Mechanism

Remote attackers can exploit this vulnerability by sending a specially crafted AVI file to the target system, causing FFmpeg to double free memory and potentially crash.

Mitigation and Prevention

To address CVE-2017-15186, users and administrators should take immediate steps and adopt long-term security practices to enhance system protection.

Immediate Steps to Take

Update FFmpeg to version 3.3.4 or later to mitigate the vulnerability.
Avoid opening AVI files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network security measures to prevent unauthorized access to systems.

Patching and Updates

Apply the latest patches and updates provided by FFmpeg to address the double free vulnerability.