CVE-2020-13543 : Security Advisory and Response

A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0, allowing remote code execution via a crafted web page triggering a use-after-free vulnerability.

Understanding CVE-2020-13543

This CVE involves a high-severity code execution vulnerability in Webkit WebKitGTK 2.30.0.

What is CVE-2020-13543?

The vulnerability in Webkit WebKitGTK 2.30.0 allows attackers to execute remote code by exploiting a use-after-free issue through a specially crafted webpage.

The Impact of CVE-2020-13543

CVSS Base Score: 8.8 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Technical Details of CVE-2020-13543

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows remote attackers to execute arbitrary code via a crafted webpage, exploiting a use-after-free flaw in Webkit WebKitGTK 2.30.0.

Affected Systems and Versions

Affected Product: Webkit
Affected Version: Webkit WebKitGTK 2.30.0

Exploitation Mechanism

Attackers can exploit this vulnerability by enticing a user to visit a malicious webpage, triggering the use-after-free vulnerability.

Mitigation and Prevention

To address CVE-2020-13543, follow these mitigation strategies:

Immediate Steps to Take

Update Webkit to a non-vulnerable version.
Avoid clicking on suspicious links or visiting untrusted websites.
Implement network-level protections to block malicious web traffic.

Long-Term Security Practices

Regularly update software and apply security patches.
Educate users about safe browsing practices and potential threats.

Patching and Updates

Apply security updates provided by Webkit promptly to patch the vulnerability.