Vulnerability Description
An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF). When users are simultaneously logged in to Microsoft SharePoint Server and visit a malicious web page, the attacker can, through standard browser functionality, induce the browser to invoke search queries as the logged in user. While the attacker can’t access the search results or documents as such, the attacker can determine whether the query did return results or not, and thus by issuing targeted queries discover facts about documents that are searchable for the logged-in user. The security update addresses the vulnerability by running the search queries in a way that doesn’t expose them to this browser vulnerability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Sharepoint Enterprise Server | 2016 |
| Microsoft | Sharepoint Foundation | 2013 |
| Microsoft | Sharepoint Server | 2019 |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1103
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1103PatchVendor Advisory
FAQ
What is CVE-2020-1103?
CVE-2020-1103 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request fo...
How severe is CVE-2020-1103?
CVE-2020-1103 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-1103?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.