CVE-2020-1023: Microsoft SharePoint Remote Code Execution Vulnerability
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1024, CVE-2020-1102.
Other sources
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.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4484332 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4484336 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch KB4484364
Event History
Frequently Asked Questions
What is the severity of CVE-2020-1023?
CVE-2020-1023 has a severity rating of Critical.
How do I fix CVE-2020-1023?
To fix CVE-2020-1023, users should apply the latest security updates provided by Microsoft for affected versions of SharePoint.
What products are affected by CVE-2020-1023?
CVE-2020-1023 affects Microsoft SharePoint Enterprise Server 2016, SharePoint Foundation 2013 SP1, and SharePoint Server 2019.
What could happen if CVE-2020-1023 is exploited?
If exploited, CVE-2020-1023 could allow an attacker to execute arbitrary code on the affected SharePoint server.
When was CVE-2020-1023 reported?
CVE-2020-1023 was reported in January 2020.