CVE-2018-11713 : Security Advisory and Response

In the WebKitGTK+ software package, a vulnerability existed in the libsoup network backend that could lead to the deanonymization of users when accessing malicious websites through WebSocket connections.

Understanding CVE-2018-11713

This CVE highlights a security issue in the WebKitGTK+ software package related to WebSocket connections.

What is CVE-2018-11713?

The vulnerability in the libsoup network backend of WebKitGTK+ allowed malicious websites to potentially deanonymize users by not correctly utilizing system proxy settings for WebSocket connections.

The Impact of CVE-2018-11713

The vulnerability could result in the deanonymization of users accessing malicious websites through WebSocket connections, compromising their privacy and security.

Technical Details of CVE-2018-11713

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue resided in the SocketStreamHandleImplSoup.cpp file within the libsoup network backend of WebKitGTK+, affecting versions prior to 2.20.0 or without libsoup version 2.62.0.

Affected Systems and Versions

WebKitGTK+ versions prior to 2.20.0
WebKitGTK+ without libsoup version 2.62.0

Exploitation Mechanism

The system proxy settings were not correctly utilized for WebSocket connections, enabling malicious websites to potentially deanonymize users.

Mitigation and Prevention

Protecting systems from this vulnerability requires specific actions.

Immediate Steps to Take

Update WebKitGTK+ to version 2.20.0 or higher.
Ensure libsoup is at version 2.62.0 or above.
Monitor WebSocket connections for suspicious activity.

Long-Term Security Practices

Regularly update software packages to patch known vulnerabilities.
Implement network monitoring to detect anomalous WebSocket behavior.

Patching and Updates

Apply patches provided by WebKitGTK+ to address the vulnerability.