CVE-2021-31965 : What You Need to Know

Microsoft SharePoint Server Information Disclosure Vulnerability was published on June 8, 2021. It affects Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, and Microsoft SharePoint Foundation 2013 Service Pack 1.

Understanding CVE-2021-31965

This CVE discloses information in Microsoft SharePoint Servers, potentially leading to a medium-severity impact.

What is CVE-2021-31965?

The vulnerability in Microsoft SharePoint Servers allows an attacker to access sensitive information leading to an information disclosure impact.

The Impact of CVE-2021-31965

The impact of this vulnerability is rated as medium severity with a CVSS base score of 5.7.

Technical Details of CVE-2021-31965

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows unauthorized access to sensitive information stored in Microsoft SharePoint Servers.

Affected Systems and Versions

Microsoft SharePoint Enterprise Server 2016 version 16.0.5173.1000 and below, Microsoft SharePoint Server 2019 version 16.0.10375.20000 and below, and Microsoft SharePoint Foundation 2013 SP1 version 15.0.5353.1000 and below are affected.

Exploitation Mechanism

The vulnerability can be exploited by an attacker with network access to the SharePoint Servers and the ability to send specially crafted requests.

Mitigation and Prevention

Protect your systems from CVE-2021-31965 by following these best practices.

Immediate Steps to Take

Ensure SharePoint Servers are not directly exposed to the internet, apply the latest security updates, and restrict network access to the servers.

Long-Term Security Practices

Regularly monitor and audit SharePoint server logs, implement strong access controls, and conduct security training for employees.

Patching and Updates

Microsoft may release patches to address this vulnerability. Stay informed about security updates from Microsoft for SharePoint Servers.