CVE-2019-20921 Explained : Impact and Mitigation

Bootstrap-select prior to version 1.13.6 is vulnerable to Cross-Site Scripting (XSS) attacks, allowing malicious code execution in a user's browser.

Understanding CVE-2019-20921

The vulnerability in bootstrap-select exposes users to potential XSS attacks, enabling unauthorized JavaScript execution.

What is CVE-2019-20921?

Bootstrap-select versions before 1.13.6 lack proper protection for title values within OPTION elements, making them susceptible to XSS attacks.

The Impact of CVE-2019-20921

This vulnerability could allow attackers to execute malicious JavaScript in a targeted user's web browser, compromising user data and system integrity.

Technical Details of CVE-2019-20921

Bootstrap-select's vulnerability to XSS attacks can have severe consequences for affected systems.

Vulnerability Description

The issue arises from the failure to escape title values in OPTION elements, potentially enabling attackers to inject and execute unauthorized JavaScript.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Vulnerable Version: Prior to 1.13.6

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious code into title values within OPTION elements, leading to XSS attacks.

Mitigation and Prevention

Protecting systems from CVE-2019-20921 requires immediate action and long-term security measures.

Immediate Steps to Take

Update bootstrap-select to version 1.13.6 or later to mitigate the XSS vulnerability.
Regularly monitor for security advisories and patches from the vendor.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Educate users on safe browsing practices and the risks of executing untrusted scripts.

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security.