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SRC-2020-0024 : Microsoft SharePoint Server TOCTOU ControlParameter Binding Remote Code Execution Vulnerability

Description

**Vulnerability Details:** This vulnerability allows remote attackers to execute arbitrary code on affected installations of SharePoint Server. Authentication is required to exploit this vulnerability. The specific flaw exists within the WebPartEditingSurfacePage class. The issue results from the lack of proper validation of user-supplied control markup. An attacker can leverage this vulnerability to execute code in the context of the local Administrator. **Affected Vendors:** Microsoft **Affected Products:** SharePoint Server **Vendor Response:** Microsoft has issued an update to correct this vulnerability. More details can be found at: <https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-16951>


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