Microsoft Office Elevation of Privilege Vulnerability
CVE-2020-1025 is fixed in 6 products on 1 platform, first by KB4571334, released July 14, 2020. It is not reported as exploited. Patch Radar priority: Urgent.
<p>An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access.</p> <p>To exploit this vulnerability, an attacker would need to modify the token.</p> <p>The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft Lync Server 2013 | KB4571334 | Jul 14, 2020 | |
| Microsoft SharePoint Enterprise Server 2016 | KB4484436 | Jul 14, 2020 | |
| Microsoft SharePoint Foundation 2013 Service Pack 1 | KB4484448 | Jul 14, 2020 | |
| Microsoft SharePoint Server 2019 | KB4484453 | Jul 14, 2020 | |
| Skype for Business Server 2015 CU 8 | KB4571333 | Jul 14, 2020 | |
| Skype for Business Server 2019 CU2 | KB4571332 | Jul 14, 2020 | |
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