Vulnerability Description
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. To exploit this vulnerability, an attacker would need to modify the token. The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Lync | 2013 |
| Microsoft | Sharepoint Enterprise Server | 2016 |
| Microsoft | Sharepoint Foundation | 2013 |
| Microsoft | Sharepoint Server | 2019 |
| Microsoft | Skype For Business | 2015 |
Related Weaknesses (CWE)
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025PatchVendor Advisory
FAQ
What is CVE-2020-1025?
CVE-2020-1025 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 vulne...
How severe is CVE-2020-1025?
CVE-2020-1025 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-1025?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Lync, Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server, Microsoft Skype For Business.