CVE-2019-0768 : Security Advisory and Response

A security feature bypass vulnerability in Internet Explorer 11 has been identified, allowing VBScript to execute inappropriately under certain conditions, leading to a security loophole. This vulnerability is also known as the 'Internet Explorer Security Feature Bypass Vulnerability'.

Understanding CVE-2019-0768

This CVE ID is distinct from CVE-2019-0761.

What is CVE-2019-0768?

This vulnerability arises from the inadequate restriction of VBScript execution in Internet Explorer, enabling the processing of requests that should be disregarded, thereby compromising security.

The Impact of CVE-2019-0768

The vulnerability poses a risk of security feature bypass, potentially allowing malicious actors to exploit the loophole for unauthorized access or other malicious activities.

Technical Details of CVE-2019-0768

Internet Explorer 11 is affected across various Windows versions and systems.

Vulnerability Description

Security feature bypass vulnerability in Internet Explorer 11
Occurs due to ineffective limitation of VBScript execution

Affected Systems and Versions

Windows 10 Version 1709, 1803, 1809 for 32-bit, x64-based, and ARM64-based Systems
Windows Server 2019

Exploitation Mechanism

VBScript execution policy inadequately restricts VBScript
Allows processing of requests that should be ignored

Mitigation and Prevention

Immediate Steps to Take:

Apply security updates from Microsoft
Consider disabling VBScript in Internet Explorer Long-Term Security Practices:
Regularly update software and systems
Implement security best practices to prevent similar vulnerabilities
Educate users on safe browsing habits
Consider using alternative browsers that do not support VBScript
Monitor for any signs of exploitation
Stay informed about security advisories and patches
Consider network segmentation and access controls
Conduct regular security assessments and audits

Patching and Updates

Microsoft has released security updates to address this vulnerability
Ensure all affected systems are promptly patched to mitigate the risk