Advisory Details

April 15th, 2020

Microsoft SharePoint Scorecards Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-20-465
ZDI-CAN-10089

CVE ID CVE-2020-0931
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. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of controls in the Microsoft.PerformancePoint.Scorecards.Client module. Instantiating the ExcelDataSet control can trigger the deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the SharePoint web server process.

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-2020-0931
DISCLOSURE TIMELINE
  • 2020-01-17 - Vulnerability reported to vendor
  • 2020-04-15 - Coordinated public release of advisory
CREDIT Anonymous
BACK TO ADVISORIES