CVE-2017-5047 : Vulnerability Insights and Analysis

A vulnerability related to ChunkDemuxer in FFmpeg has been discovered in Google Chrome versions prior to 57.0.2987.98 for Mac, Windows, and Linux, and 57.0.2987.108 for Android. This vulnerability, known as an integer overflow, enables a remote attacker to carry out an out-of-bounds memory write by using a specifically created video file.

Understanding CVE-2017-5047

This CVE identifies an integer overflow vulnerability in FFmpeg affecting specific versions of Google Chrome on various operating systems.

What is CVE-2017-5047?

An integer overflow in FFmpeg in Google Chrome prior to version 57.0.2987.98 for Mac, Windows, and Linux, and 57.0.2987.108 for Android, allows a remote attacker to perform an out-of-bounds memory write via a crafted video file, related to ChunkDemuxer.

The Impact of CVE-2017-5047

The vulnerability could be exploited by a remote attacker to execute arbitrary code or cause a denial of service on the affected system.

Technical Details of CVE-2017-5047

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability is due to an integer overflow in FFmpeg, which could be exploited by an attacker to perform an out-of-bounds memory write.

Affected Systems and Versions

Google Chrome versions prior to 57.0.2987.98 for Mac, Windows, and Linux
Google Chrome version 57.0.2987.108 for Android

Exploitation Mechanism

Attackers can exploit this vulnerability by using a specially crafted video file to trigger the integer overflow, leading to an out-of-bounds memory write.

Mitigation and Prevention

Protecting systems from CVE-2017-5047 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Google Chrome to version 57.0.2987.98 for Mac, Windows, and Linux, and 57.0.2987.108 for Android to mitigate the vulnerability.
Avoid opening or accessing suspicious video files from untrusted sources.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Implement network security measures to detect and prevent potential attacks.

Patching and Updates

Google Chrome users should apply the latest updates provided by the vendor to address the integer overflow vulnerability in FFmpeg.