Microsoft SharePoint Server Remote Code Execution Vulnerability

The Microsoft SharePoint Server 2013 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

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

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-42320, CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

The Microsoft SharePoint Server 2019 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-42320, CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

The Microsoft SharePoint Server 2016 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-42320, CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

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

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

ID	Name	Product	Family	Severity
158167	Security Updates for Microsoft SharePoint Server 2013 (December 2021)	Nessus	Windows : Microsoft Bulletins	high
158166	Security Updates for Microsoft SharePoint Server Subscription Edition (December 2021)	Nessus	Windows : Microsoft Bulletins	high
158165	Security Updates for Microsoft SharePoint Server 2019 (December 2021)	Nessus	Windows : Microsoft Bulletins	high
158164	Security Updates for Microsoft SharePoint Server 2016 (December 2021)	Nessus	Windows : Microsoft Bulletins	high
113084	Microsoft SharePoint Server 2016 < 16.0.5254.1000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high
113083	Microsoft SharePoint Server 2019 < 16.0.10381.20001 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high

Detections

Analytics

CVE-2021-42309

high

Tenable Plugins

high

high

high

high

high

high