title: Microsoft SharePoint Spoofing Vulnerability
description: <p>A spoofing 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.</p>
<p>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.</p>
<p>The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.</p>
problem types: Spoofing
affected:
{
vendor: Microsoft
product: Microsoft SharePoint Enterprise Server 2016
cpes: cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
platforms: x64-based Systems
versions:
version: 16.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft SharePoint Server 2019
cpes: cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 16.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft SharePoint Foundation 2010 Service Pack 2
cpes: cpe:2.3:a:microsoft:sharepoint_server:2010:sp2:*:*:foundation:*:*:*
platforms: Unknown
versions:
version: 13.0.0, lessThan: publication, versionType: custom, status: affected
}
{
vendor: Microsoft
product: Microsoft SharePoint Foundation 2013 Service Pack 1
cpes: cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*
platforms: x64-based Systems
versions:
version: 15.0.0, lessThan: publication, versionType: custom, status: affected
}
metrics:
format: CVSS
scenarios: GENERAL
cvssV3_1: [
version: 3.1
baseSeverity: MEDIUM
baseScore: 4.6
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
]