# CVE-2020-1178: Microsoft SharePoint Server Elevation of Privilege Vulnerability

CVE-2020-1178 is fixed in 4 products on 1 platform, first by KB4484405, released June 9, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-1178
- Priority: High
- CVSS: n/a (Important)
- EPSS: 0.0313
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jun 9, 2020
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1178

## Description

<p>An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted authentication request to an affected SharePoint server. An attacker who successfully exploited this vulnerability could execute malicious code on a vulnerable server in the context of the SharePoint application pool account.</p> <p>To exploit this vulnerability, an authenticated attacker would need to create a page specifically designed to cause a server-side request. The attacker would then send a specially-crafted message to perform a server-side request forgery attack.</p> <p>The update addresses the vulnerability by modifying how Microsoft SharePoint Server manages server authentication.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2013 Service Pack 1 |  | [KB4484405](https://patchblox.com/security/data/fix/microsoft/kb4484405.md) | Jun 9, 2020 |
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |  | [KB4484402](https://patchblox.com/security/data/fix/microsoft/kb4484402.md) | Jun 9, 2020 |
| Microsoft | Microsoft SharePoint Server 2010 Service Pack 2 |  | [KB4484414](https://patchblox.com/security/data/fix/microsoft/kb4484414.md) | Jun 9, 2020 |
| Microsoft | Microsoft SharePoint Server 2019 |  | [KB4484400](https://patchblox.com/security/data/fix/microsoft/kb4484400.md) | Jun 9, 2020 |

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