Advisory Details

June 9th, 2020

Microsoft SharePoint Server Web Part Remote Code Execution Vulnerability

ZDI-20-694
ZDI-CAN-10589

CVE ID CVE-2020-1181
CVSS SCORE 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS SharePoint
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft SharePoint Server. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of Web Parts. When creating a SharePoint page, an attacker can upload XML containing an arbitrary Web Part definition. An attacker can leverage this vulnerability to execute code in the context of the service account.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1181
DISCLOSURE TIMELINE
  • 2020-03-03 - Vulnerability reported to vendor
  • 2020-06-09 - Coordinated public release of advisory
CREDIT Anonymous
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