CVE-2019-0958 : Security Advisory and Response

A vulnerability known as an elevation of privilege in Microsoft SharePoint Server, affecting versions 2013 Service Pack 1 and 2019.

Understanding CVE-2019-0958

What is CVE-2019-0958?

This vulnerability occurs when a specific type of web request is not properly sanitized by SharePoint, leading to an elevation of privilege.

The Impact of CVE-2019-0958

The vulnerability allows attackers to elevate their privileges on the affected SharePoint server, potentially gaining unauthorized access to sensitive information.

Technical Details of CVE-2019-0958

Vulnerability Description

An elevation of privilege vulnerability exists in Microsoft SharePoint Server due to improper sanitization of web requests, also known as 'Microsoft SharePoint Elevation of Privilege Vulnerability.'

Affected Systems and Versions

Microsoft SharePoint Foundation 2013 Service Pack 1
Microsoft SharePoint Server 2019

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted web requests to the affected SharePoint server, bypassing security measures.

Mitigation and Prevention

Immediate Steps to Take

Apply security updates provided by Microsoft to patch the vulnerability.
Monitor network traffic for any suspicious activity that could indicate exploitation.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Implement least privilege access controls to limit the impact of potential privilege escalation attacks.
Conduct security assessments and penetration testing to identify and address security weaknesses.

Patching and Updates

Microsoft has released security updates to address CVE-2019-0958. Ensure all SharePoint servers are updated with the latest patches to mitigate the risk of exploitation.