CVE-2021-31173 : Security Advisory and Response
Learn about CVE-2021-31173, an information disclosure vulnerability in Microsoft SharePoint Server, affecting versions 2016, 2019, and Foundation 2013 SP1. Find out the impact, affected systems, and mitigation steps in this detailed article.
A detailed overview of the Microsoft SharePoint Server Information Disclosure Vulnerability (CVE-2021-31173) affecting multiple versions of Microsoft SharePoint products.
Understanding CVE-2021-31173
This section delves into the nature and impact of the information disclosure vulnerability in Microsoft SharePoint Server.
What is CVE-2021-31173?
The CVE-2021-31173 is an information disclosure vulnerability impacting Microsoft SharePoint Server, potentially exposing sensitive data.
The Impact of CVE-2021-31173
This vulnerability could allow an attacker to access confidential information stored in the affected SharePoint environments.
Technical Details of CVE-2021-31173
Explore the technical aspects of the CVE-2021-31173 vulnerability for a better understanding of its implications.
Vulnerability Description
The vulnerability allows unauthorized users to view sensitive information within Microsoft SharePoint Server.
Affected Systems and Versions
- Microsoft SharePoint Enterprise Server 2016 (Version 16.0.0 to less than 16.0.5161.1000)
- Microsoft SharePoint Server 2019 (Version 16.0.0 to less than 16.0.10374.20000)
- Microsoft SharePoint Foundation 2013 Service Pack 1 (Version 15.0.0 to less than 15.0.5345.1000)
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to read sensitive data without proper authorization.
Mitigation and Prevention
Learn about the necessary steps to mitigate the risks associated with CVE-2021-31173 and prevent potential exploitation.
Immediate Steps to Take
- Monitor official Microsoft security advisories for patches and updates related to this vulnerability.
- Implement access controls and permissions to restrict unauthorized access to SharePoint data.
Long-Term Security Practices
- Regularly update and patch Microsoft SharePoint Server to the latest versions to protect against known vulnerabilities.
- Conduct security assessments and audits to identify and address any security gaps in the environment.
Patching and Updates
Apply security patches and updates provided by Microsoft for the affected versions of SharePoint Server to remediate CVE-2021-31173.