CVE-2019-0830 : What You Need to Know

Microsoft SharePoint Server is affected by a cross-site scripting (XSS) vulnerability, allowing specially crafted web requests to bypass server sanitization, posing a security risk.

Understanding CVE-2019-0830

This vulnerability, also known as 'Microsoft Office SharePoint XSS Vulnerability,' impacts various versions of Microsoft SharePoint Server.

What is CVE-2019-0830?

The vulnerability in Microsoft SharePoint Server allows malicious actors to execute XSS attacks by exploiting unsanitized web requests.

The Impact of CVE-2019-0830

Successful exploitation could lead to unauthorized access, data theft, and potential system compromise.

Technical Details of CVE-2019-0830

Microsoft SharePoint Server's vulnerability is detailed below.

Vulnerability Description

Cross-site scripting (XSS) flaw in Microsoft SharePoint Server due to inadequate sanitization of specific web requests.

Affected Systems and Versions

Microsoft SharePoint Foundation 2013 Service Pack 1
Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Server 2019

Exploitation Mechanism

Specially crafted web requests bypass server sanitization, enabling attackers to inject malicious scripts.

Mitigation and Prevention

Protect your systems from CVE-2019-0830 with the following measures.

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Implement web application firewalls to filter and block malicious requests.
Regularly monitor and audit web traffic for suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on safe browsing habits and phishing awareness.
Keep software and systems updated to prevent known vulnerabilities.
Follow security best practices recommended by Microsoft.

Patching and Updates

Stay informed about security advisories and updates from Microsoft.
Apply patches and updates to Microsoft SharePoint Server to address the XSS vulnerability.