CVE-2021-31950 : What You Need to Know

A spoofing vulnerability in Microsoft SharePoint Server was disclosed on June 8, 2021, potentially impacting various versions of Microsoft SharePoint products.

Understanding CVE-2021-31950

This CVE record refers to a spoofing vulnerability in Microsoft SharePoint Server, which could allow an attacker to manipulate content or impersonate users on the platform.

What is CVE-2021-31950?

The CVE-2021-31950 vulnerability involves spoofing, enabling threat actors to carry out attacks that may trick users into taking actions they wouldn't otherwise perform without the spoofing entity's influence.

The Impact of CVE-2021-31950

With a base severity rated as HIGH, this vulnerability poses a significant risk to affected systems. An attacker exploiting this flaw could compromise the integrity and confidentiality of information stored on the SharePoint Server.

Technical Details of CVE-2021-31950

The following technical details provide an insight into the affected systems, exploitation mechanism, and mitigation strategies.

Vulnerability Description

The vulnerability in Microsoft SharePoint Server allows for spoofing, potentially leading to unauthorized actions by threat actors thinking they are interacting with a legitimate user or component.

Affected Systems and Versions

Multiple Microsoft SharePoint products are affected, including Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, and Microsoft SharePoint Foundation 2013 Service Pack 1. Specific version ranges are outlined in the CVE details.

Exploitation Mechanism

The exploitation of CVE-2021-31950 involves fraudulent activities or requests that appear as legitimate interactions, aiming to mislead users or systems into accepting false information or instructions.

Mitigation and Prevention

To address the vulnerabilities outlined in CVE-2021-31950, immediate actions should be taken along with implementing long-term security practices and applying necessary patches and updates.

Immediate Steps to Take

Organizations using the affected Microsoft SharePoint products should apply security patches provided by Microsoft promptly to mitigate the risk of exploitation.

Long-Term Security Practices

Apart from immediate patching, it is essential to follow best cybersecurity practices, including access control, security monitoring, and user awareness training to prevent spoofing attacks.

Patching and Updates

Regularly check for security updates and apply them as soon as they are released by Microsoft to protect the SharePoint Server from known vulnerabilities.