Vulnerability identifier: #VU78115

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-33159

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft SharePoint Server
Server applications / Application servers
Microsoft SharePoint Server Subscription Edition
Server applications / Application servers
Microsoft SharePoint Enterprise Server
Server applications / Application servers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the Microsoft SharePoint Server. A remote attacker can spoof page content.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SharePoint Server: 2019

Microsoft SharePoint Server Subscription Edition: All versions

Microsoft SharePoint Enterprise Server: 2016

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-33159

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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.