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.

According to its self-reported version number, the Microsoft SharePoint application running on the remote host is affected by multiple vulnerabilities :

 - 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.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft SharePoint Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

  - 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. The     attacker who successfully exploited this 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 victim,     such as change permissions, delete content, steal     sensitive information (such as browser cookies) and     inject malicious content in the browser of the victim.
    For this vulnerability to be exploited, a user must     click a specially crafted URL that takes the user to a     targeted SharePoint Web App site. In an email attack     scenario, an attacker could exploit the vulnerability by     sending an email message containing the specially     crafted URL to the user of the targeted Sharepoint Web     App site and convincing the user to click the specially     crafted URL.  (CVE-2020-0795, CVE-2020-0891)

  - A remote code execution vulnerability exists in     Microsoft Word software when it fails to properly handle     objects in memory. An attacker who successfully     exploited the vulnerability could use a specially     crafted file to perform actions in the security context     of the current user. For example, the file could then     take actions on behalf of the logged-on user with the     same permissions as the current user.  (CVE-2020-0850,     CVE-2020-0892)

  - A remote code execution vulnerability exists in     Microsoft Word software when it fails to properly handle     objects in memory. An attacker who successfully     exploited the vulnerability could use a specially     crafted file to perform actions in the security context     of the current user. For example, the file could then     take actions on behalf of the logged-on user with the     same permissions as the current user.  (CVE-2020-0852)

  - 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. 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. The security update addresses the     vulnerability by helping to ensure that SharePoint     Server properly sanitizes web requests. (CVE-2020-0893,     CVE-2020-0894)

ID	Name	Product	Family	Severity
112321	Microsoft SharePoint Server 2010 build < 14.0.7246.5000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high
112320	Microsoft SharePoint Server 2019 build < 16.0.10357.20002 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high
112319	Microsoft SharePoint Server 2013 build < 15.0.5223.1000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high
112318	Microsoft SharePoint Server 2016 build < 16.0.4978.1000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high
134378	Security Updates for Microsoft SharePoint Server (March 2020)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2020-0891

medium

Tenable Plugins

high

high

high

high

high