CVE-2020-1200 Microsoft SharePoint Remote Code Execution Vulnerability

High 8.6 Published 11 Sep 2020 Updated 4 Aug 2024

An attacker can execute arbitrary code by uploading a malicious SharePoint application package, requiring user interaction to upload the file.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-1200?

CVE-2020-1200 is a high-severity code injection vulnerability in Microsoft Sharepoint Enterprise Server, published on 11 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.

Weakness: CWE-494

Which versions are affected by CVE-2020-1200?

It affects 3 products.

Products include Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.

How do I fix CVE-2020-1200?

No fix has been published for CVE-2020-1200 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-1200 being exploited?

There is no known exploitation of CVE-2020-1200 in the wild and no public exploit code.

All Microsoft Sharepoint Enterprise Server vulnerabilities

Sources

Also known as GHSA-56px-8q45-w6v6.