Vulnerability · Published May 21, 2020 · Assigned by microsoft
CVE-2020-1103Microsoft SharePoint Information Disclosure Vulnerability
Medium 6.5
In plain English
A medium-severity security flaw in Microsoft SharePoint Enterprise Server 2016 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – before publication |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | 15.0.0 – before publication |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – before publication |
References
- Microsoft SharePoint Information Disclosure Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1103 x_refsource_MISC, x_transferred