Microsoft SharePoint Server Remote Privilege Escalation Vulnerability

Summary

SharePoint is a web-based collaborative platform that integrates with Microsoft Office. Launched in 2001,SharePoint is primarily sold as a document management and storage system, but the product is highly configurable.Microsoft states that SharePoint has 190 million users across 200,000 customer organizations.
An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server.
The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user.
These attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user.
The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.

Solution

1.At present, Microsoft has officially provided the patch or upgrade program, we suggest users who use this software to get the latest security updates as soon as possible:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8254
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8252