CVE-2021-43242
vulnerability analysis and mitigation

Overview

A spoofing vulnerability was identified in Microsoft SharePoint Server, tracked as CVE-2021-43242. The vulnerability was disclosed and addressed in Microsoft's December 2021 security updates (Microsoft Support).

Technical details

The vulnerability affects Microsoft SharePoint Server Subscription Edition and SharePoint Server 2019. Microsoft released security updates to address this spoofing vulnerability as part of their December 14, 2021 security patch release (Microsoft Support).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability. The fixes are available through Microsoft Update, Microsoft Update Catalog, and Microsoft Download Center. For SharePoint Server Subscription Edition, users should install security update KB5002045, and for SharePoint Server 2019, users should install security update KB5002054 (Microsoft Support).

Additional resources


SourceThis report was generated using AI

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