CVE-2021-42320 : What You Need to Know

Microsoft SharePoint Server Spoofing Vulnerability was published on December 14, 2021. It affects various versions of Microsoft SharePoint Server.

Understanding CVE-2021-42320

This CVE involves a Spoofing vulnerability in Microsoft SharePoint Server.

What is CVE-2021-42320?

The CVE-2021-42320 is a Spoofing vulnerability in Microsoft SharePoint Server, allowing attackers to deceive users.

The Impact of CVE-2021-42320

The impact is rated as HIGH with a CVSS base score of 8, posing risks to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-42320

This section provides technical insights into the CVE.

Vulnerability Description

Type: Spoofing vulnerability
CVSS Base Score: 8 (HIGH)

Affected Systems and Versions

The following Microsoft SharePoint Server versions are affected:

Microsoft SharePoint Enterprise Server 2016 (Less than 16.0.5254.1000)
Microsoft SharePoint Server 2019 (Less than 16.0.10381.20001)
Microsoft SharePoint Server Subscription Edition (Less than 16.0.14326.20620)

Exploitation Mechanism

The vulnerability allows attackers to conduct Spoofing attacks, potentially leading to unauthorized access or manipulation of data.

Mitigation and Prevention

Protect your systems from CVE-2021-42320 with these security measures.

Immediate Steps to Take

Apply security patches provided by Microsoft
Monitor for any unauthorized access or unusual activities

Long-Term Security Practices

Conduct regular security assessments and audits
Educate users on identifying and reporting suspicious activities

Patching and Updates

Keep your Microsoft SharePoint Server up to date with the latest security patches to mitigate the risk of this Spoofing vulnerability.