CVE-2020-0891: XSS

Published Mar 12, 2020

Updated

This vulnerability is caused when SharePoint Server does not properly sanitize a specially crafted request to an affected SharePoint server.An authenticated attacker could exploit this vulnerability by sending a specially crafted request to an affected SharePoint server, aka 'Microsoft SharePoint Reflective XSS Vulnerability'. This CVE ID is unique from CVE-2020-0795.

Affected Software

4 affected components

Microsoft SharePoint Enterprise Server=2016

Microsoft SharePoint Foundation=2010-sp2

Microsoft SharePoint Foundation=2013-sp1

Microsoft SharePoint Server=2019

Remediation

Patch Available

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0891

Event History

Mar 12, 2020

CVE Published

via MITRE·03:48 PM

Data Sourced

via MITRE·03:48 PM

DescriptionWeakness

Data Sourced

via NVD·04:15 PM

RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2020-0891?

CVE-2020-0891 is rated as important, indicating a significant security risk that could be exploited by attackers.

How do I fix CVE-2020-0891?

To fix CVE-2020-0891, apply the security updates released by Microsoft for the affected versions of SharePoint.

Who is affected by CVE-2020-0891?

CVE-2020-0891 affects users of Microsoft SharePoint Server 2016, SharePoint Foundation 2010 SP2, SharePoint Foundation 2013 SP1, and SharePoint Server 2019.

What type of attack can exploit CVE-2020-0891?

CVE-2020-0891 can be exploited through authenticated attackers sending specially crafted requests to the affected SharePoint servers.

Is CVE-2020-0891 an authenticated or unauthenticated vulnerability?

CVE-2020-0891 is an authenticated vulnerability, meaning it requires an attacker to have valid credentials to exploit it.