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Rewterz Threat Advisory – Microsoft SharePoint Multiple Products Multiple Script Insertion Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2019-0830

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka ‘Microsoft Office SharePoint XSS Vulnerability’.

CVE-2019-0831

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka ‘Microsoft Office SharePoint XSS Vulnerability’.

Impact

Cross Site Scripting

Affected Vendors

Microsoft

Affected Products

  • Microsoft SharePoint Foundation 2010
  • Microsoft SharePoint Foundation 2013
  • Microsoft SharePoint Server 2016
  • Microsoft SharePoint Server 2019

Remediation

Vendor has released updates for the following products

Microsoft SharePoint Enterprise Server 2016 (KB4464510):

https://www.microsoft.com/downloads/details.aspx?familyid=651f7b7b-0ffd-4f87-8220-abecb26b33e6

Microsoft SharePoint Server 2019 (KB4464518):

https://www.microsoft.com/downloads/details.aspx?familyid=e9a9e875-9e19-42b1-8726-7c8047693f89

Microsoft SharePoint Foundation 2013 Service Pack 1 (KB4464515):

https://www.microsoft.com/downloads/details.aspx?familyid=c3ccd934-34cf-4171-8269-b4f0b0e3e695

Microsoft SharePoint Foundation 2010 Service Pack 2 (KB4464528):

https://www.microsoft.com/downloads/details.aspx?familyid=4ac767aa-15b0-48d0-891d-ac0fbb0c65df