CVE-2019-0668 : Security Advisory and Response

Microsoft SharePoint Server is affected by an elevation of privilege vulnerability due to insufficient sanitization of crafted web requests. This vulnerability, known as 'Microsoft SharePoint Elevation of Privilege Vulnerability,' was made public on March 5, 2019.

Understanding CVE-2019-0668

This CVE identifies a security flaw in Microsoft SharePoint Server that allows attackers to elevate their privileges on the affected system.

What is CVE-2019-0668?

This vulnerability arises from the inadequate sanitization of specific web requests sent to a SharePoint server, enabling attackers to escalate their privileges on the compromised system.

The Impact of CVE-2019-0668

The elevation of privilege vulnerability in Microsoft SharePoint Server can lead to unauthorized access to sensitive information, manipulation of data, and potential system compromise.

Technical Details of CVE-2019-0668

Microsoft SharePoint Server's vulnerability to elevation of privilege can have significant implications for system security.

Vulnerability Description

The flaw in Microsoft SharePoint Server allows attackers to exploit insufficient sanitization of web requests, leading to unauthorized privilege escalation on the affected server.

Affected Systems and Versions

Product: Microsoft SharePoint Enterprise Server
Versions Affected: 2016, 2013 Service Pack 1

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted web requests to a vulnerable SharePoint server, bypassing security measures and gaining elevated privileges.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-0668.

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Monitor and restrict access to SharePoint servers.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch SharePoint servers to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.
Educate users on safe browsing habits and security best practices.
Implement least privilege access controls to limit user permissions.
Utilize intrusion detection and prevention systems to monitor and block suspicious activities.

Patching and Updates

Microsoft may release security updates and patches to address the elevation of privilege vulnerability in SharePoint Server. Stay informed about these updates and apply them promptly to enhance system security.