8.8high

CVE-2020-1024

Microsoft SharePoint Remote Code Execution Vulnerability

Published 6 y ago · modified 2 mo ago · JSON

CVSS
8.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
3.7%
percentile 90%
Public exploits
0
none known

Summary

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.

Exploit prediction (EPSS)

3.75% probability of exploitation in the next 30 days, higher than 90% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.18.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.06.5AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Microsoft Microsoft SharePoint Enterprise Server 2016
  • Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1
  • Microsoft Microsoft SharePoint Server 2019

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.