CVE-2020-1227: Microsoft Office SharePoint XSS Vulnerability
First published: Fri Sep 11 2020(Updated: )
<p>A cross-site-scripting (XSS) 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. The 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>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft SharePoint Enterprise Server 2016 | =2016 | |
| Microsoft SharePoint Foundation 2013 | =2013-sp1 | |
| Microsoft SharePoint Server 2010 | =2019 |
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Frequently Asked Questions
What is the severity of CVE-2020-1227?
CVE-2020-1227 has a severity rating of important, indicating it presents a significant security risk.
How do I fix CVE-2020-1227?
To fix CVE-2020-1227, apply the latest security updates provided by Microsoft for the affected SharePoint versions.
Who can exploit CVE-2020-1227?
An authenticated attacker with access to the affected SharePoint server can exploit CVE-2020-1227.
Which versions of SharePoint are affected by CVE-2020-1227?
CVE-2020-1227 affects Microsoft SharePoint Server 2019, SharePoint 2016, and SharePoint Foundation 2013 SP1.
What is the nature of the attack for CVE-2020-1227?
CVE-2020-1227 is a cross-site scripting (XSS) vulnerability that can be exploited through specially crafted web requests.
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