CVE-2019-0871 Explained : Impact and Mitigation

A Cross-site Scripting (XSS) vulnerability is identified in Azure DevOps Server and Team Foundation Server, leading to the 'Azure DevOps Server and Team Foundation Server Cross-site Scripting Vulnerability'.

Understanding CVE-2019-0871

The presence of a Cross-site Scripting (XSS) vulnerability in Azure DevOps Server and Team Foundation Server due to inadequate user input sanitization.

What is CVE-2019-0871?

Identified XSS vulnerability in Azure DevOps Server and Team Foundation Server
Vulnerability commonly known as 'Azure DevOps Server and Team Foundation Server Cross-site Scripting Vulnerability'

The Impact of CVE-2019-0871

Allows attackers to execute malicious scripts in the context of a user's session
Potential for unauthorized access to sensitive information

Technical Details of CVE-2019-0871

A detailed look at the technical aspects of the vulnerability.

Vulnerability Description

XSS vulnerability due to inadequate input sanitization

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

Exploitation Mechanism

Attackers inject malicious scripts through unsanitized user input

Mitigation and Prevention

Steps to address and prevent the CVE-2019-0871 vulnerability.

Immediate Steps to Take

Apply security patches provided by Microsoft
Implement input validation and sanitization mechanisms
Monitor and restrict user input to prevent XSS attacks

Long-Term Security Practices

Regular security training for developers on secure coding practices
Conduct security audits and code reviews to identify vulnerabilities
Utilize web application firewalls to filter and block malicious traffic

Patching and Updates

Stay updated with security advisories from Microsoft
Apply patches promptly to mitigate known vulnerabilities