CVE-2021-1726 Explained : Impact and Mitigation

A spoofing vulnerability has been identified in Microsoft SharePoint Server, potentially impacting various versions of the software.

Understanding CVE-2021-1726

This CVE record describes a Spoofing vulnerability in Microsoft SharePoint Server that was published on February 25, 2021.

What is CVE-2021-1726?

The CVE-2021-1726 vulnerability is related to Spoofing and affects Microsoft SharePoint Server. This vulnerability allows attackers to deceive users or systems into believing that the source of malicious data is a trusted party.

The Impact of CVE-2021-1726

The impact of this vulnerability is rated as HIGH, with a CVSS base score of 8. It poses a significant threat to the confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-1726

This section provides more detailed technical information about CVE-2021-1726.

Vulnerability Description

The vulnerability in Microsoft SharePoint Server allows for Spoofing attacks, which could lead to unauthorized access to sensitive information or the execution of arbitrary code.

Affected Systems and Versions

The following Microsoft SharePoint Server versions are affected:

Microsoft SharePoint Enterprise Server 2016 (Version 16.0.0)
Microsoft SharePoint Server 2019 (Version 16.0.0)
Microsoft SharePoint Foundation 2010 Service Pack 2 (Version 13.0.0)
Microsoft SharePoint Foundation 2013 Service Pack 1 (Version 15.0.0)

Exploitation Mechanism

Attackers can exploit this vulnerability by spoofing trusted sources or entities, thereby deceiving users or applications into interacting with malicious content.

Mitigation and Prevention

To protect systems from the CVE-2021-1726 vulnerability, it is essential to take immediate action and implement long-term security practices.

Immediate Steps to Take

Apply security updates provided by Microsoft for the affected SharePoint Server versions.
Implement network-level protections to detect and block spoofing attempts.

Long-Term Security Practices

Regularly update and patch SharePoint Server installations to protect against known vulnerabilities.
Educate users and administrators about the risks associated with interacting with untrusted content.

Patching and Updates

Stay informed about security advisories from Microsoft and promptly apply patches and updates to mitigate the risks associated with CVE-2021-1726.