Vulnerability identifier: #VU28830

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1178

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft SharePoint Server
Server applications / Application servers

Vendor: Microsoft

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to the Microsoft SharePoint Server does not properly sanitize a specially crafted authentication request to an affected SharePoint server. A remote attacker can send a specially crafted message and trick the application to initiate requests to arbitrary systems, leading to remote code execution with elevated privileges.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft SharePoint Server: 2010 - 2019

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1178

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.