CVE-2020-17089 : Exploit Details and Defense Strategies
Learn about CVE-2020-17089, an elevation of privilege vulnerability in Microsoft SharePoint servers. Find out the impacted systems, exploitation risks, and mitigation steps.
Microsoft SharePoint Elevation of Privilege Vulnerability was published on December 8, 2020, affecting various versions of Microsoft SharePoint servers.
Understanding CVE-2020-17089
This CVE identifies an elevation of privilege vulnerability in Microsoft SharePoint servers.
What is CVE-2020-17089?
The CVE-2020-17089 vulnerability refers to an elevation of privilege issue in Microsoft SharePoint servers, allowing attackers to gain elevated privileges.
The Impact of CVE-2020-17089
The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.1. Attackers can exploit this flaw to escalate their privileges on the affected systems.
Technical Details of CVE-2020-17089
This section provides technical details about the vulnerability.
Vulnerability Description
The vulnerability allows unauthorized users to elevate their privileges on Microsoft SharePoint servers.
Affected Systems and Versions
- 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 leveraging the elevation of privilege issue to gain unauthorized access to sensitive information or perform malicious actions.
Mitigation and Prevention
Protecting systems from CVE-2020-17089 is crucial to maintaining security.
Immediate Steps to Take
- Apply security patches provided by Microsoft promptly.
- Monitor system logs for any suspicious activities.
- Restrict access to SharePoint servers to authorized personnel only.
Long-Term Security Practices
- Conduct regular security assessments and audits.
- Implement the principle of least privilege to limit user access.
- Educate users on security best practices and the importance of timely updates.
Patching and Updates
Regularly check for security updates and patches released by Microsoft to address vulnerabilities like CVE-2020-17089.