CVE-2019-0866 Explained : Impact and Mitigation

A Cross-site Scripting (XSS) vulnerability is detected in Azure DevOps Server and Team Foundation Server due to inadequate sanitization of user input, known as 'Azure DevOps Server and Team Foundation Server Cross-site Scripting Vulnerability'. This CVE ID is distinct from others, ensuring its uniqueness.

Understanding CVE-2019-0866

This CVE involves a Cross-site Scripting (XSS) vulnerability in Azure DevOps Server and Team Foundation Server.

What is CVE-2019-0866?

CVE-2019-0866 refers to a Cross-site Scripting (XSS) vulnerability found in Azure DevOps Server and Team Foundation Server due to insufficient sanitization of user input.

The Impact of CVE-2019-0866

The vulnerability can allow attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-0866

This section provides technical insights into the vulnerability.

Vulnerability Description

The XSS vulnerability in Azure DevOps Server and Team Foundation Server arises from the lack of proper sanitization of user-supplied input.

Affected Systems and Versions

Team Foundation Server 2017 Update 3.1
Team Foundation Server 2018 Update 1.2 and Update 3.2
Azure DevOps Server 2019
Team Foundation Server 2015 Update 4.2

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into web applications, which are then executed in the browsers of users visiting the affected sites.

Mitigation and Prevention

Protecting systems from CVE-2019-0866 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Implement input validation mechanisms to sanitize user input effectively.
Monitor and restrict user input to prevent script injection.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities.
Conduct security training for developers to enhance awareness of secure coding practices.

Patching and Updates

Ensure that all affected systems are updated with the latest security patches released by Microsoft to mitigate the XSS vulnerability.