CVE-2018-12293 : Security Advisory and Response

A heap-based buffer overflow vulnerability in WebKit affects versions of WebKitGTK+ and WPE WebKit. This CVE was published on June 19, 2018.

Understanding CVE-2018-12293

This CVE describes a specific vulnerability in WebKit that could be exploited by malicious HTML content.

What is CVE-2018-12293?

The vulnerability is a heap-based buffer overflow in the getImageData function within the ImageBufferCairo class in WebKit.

The Impact of CVE-2018-12293

The vulnerability affects versions of WebKitGTK+ older than 2.20.3 and WPE WebKit older than 2.20.1. It is triggered by an integer overflow and can be exploited by malicious HTML content.

Technical Details of CVE-2018-12293

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability is a heap-based buffer overflow triggered by an integer overflow in the getImageData function within the ImageBufferCairo class in WebKit.

Affected Systems and Versions

WebKitGTK+ versions older than 2.20.3
WPE WebKit versions older than 2.20.1

Exploitation Mechanism

The vulnerability can be exploited by malicious HTML content.

Mitigation and Prevention

Protecting systems from this vulnerability requires specific actions.

Immediate Steps to Take

Update WebKitGTK+ to version 2.20.3 or newer
Update WPE WebKit to version 2.20.1 or newer
Avoid visiting untrusted websites

Long-Term Security Practices

Regularly update software and applications
Implement security best practices to prevent buffer overflow vulnerabilities

Patching and Updates

Ensure timely patching of WebKitGTK+ and WPE WebKit to the latest versions to mitigate the vulnerability.