CVE-2021-31181: Microsoft SharePoint WebPart Interpretation Conflict Remote Code Execution Vulnerability
First published: Tue May 11 2021(Updated: )
Microsoft SharePoint Remote Code Execution Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft SharePoint Enterprise Server | =2016 | |
| Microsoft SharePoint Foundation | =2013-sp1 | |
| Microsoft SharePoint Server | =2019 | |
| Microsoft SharePoint | ||
| Microsoft SharePoint Foundation 2013 | ||
| Microsoft SharePoint Enterprise Server 2016 | ||
| Microsoft SharePoint Server 2019 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31181 (Advisory)
- http://packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-ViewState-Remote-Code-Execution.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31181
- https://www.zerodayinitiative.com/advisories/ZDI-21-573/
Frequently Asked Questions
What is CVE-2021-31181?
CVE-2021-31181 is a vulnerability in Microsoft SharePoint that allows remote attackers to execute arbitrary code.
How severe is the CVE-2021-31181 vulnerability?
The severity of CVE-2021-31181 is rated as high, with a severity value of 8.8.
How can I exploit CVE-2021-31181?
To exploit CVE-2021-31181, remote attackers would need to authenticate and then use a specific flaw in the handling of server-side controls in WebParts.
Which versions of Microsoft SharePoint are affected by CVE-2021-31181?
The following versions of Microsoft SharePoint are affected: SharePoint Foundation 2013 SP1, SharePoint Enterprise Server 2016, and SharePoint Server 2019.
How can I fix CVE-2021-31181?
To fix CVE-2021-31181, apply the relevant patches provided by Microsoft for SharePoint Foundation 2013, SharePoint Enterprise Server 2016, and SharePoint Server 2019.
- collector/msrc-cve
- collector/zdi-advisory
- alias/ZDI-21-573
- alias/ZDI-CAN-12948
- alias/CVE-2021-31181
- collector/nvd-index
- collector/mitre-cve
- agent/title
- agent/description
- agent/type
- agent/references
- agent/severity
- agent/author
- agent/event
- agent/remedy
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- agent/software-canonical-lookup-request
- vendor/microsoft
- canonical/microsoft sharepoint
- canonical/microsoft sharepoint enterprise server
- version/microsoft sharepoint enterprise server/2016
- canonical/microsoft sharepoint foundation
- version/microsoft sharepoint foundation/2013-sp1
- canonical/microsoft sharepoint server
- version/microsoft sharepoint server/2019
- canonical/microsoft sharepoint foundation 2013
- canonical/microsoft sharepoint enterprise server 2016
- canonical/microsoft sharepoint server 2019