SharePoint Unrestricted Upload of File with Dangerous Type Vulnerability - CVE-2019-1443

An information disclosure vulnerability exists in Microsoft SharePoint when an attacker uploads a specially crafted file to the SharePoint Server.An authenticated attacker who successfully exploited this vulnerability could potentially leverage SharePoint functionality to obtain SMB hashes.The security update addresses the vulnerability by correcting how SharePoint checks file content. aka 39Microsoft SharePoint Information Disclosure Vulnerability39.