Vulnerability identifier: #VU70959

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-21743

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to security features bypass in Microsoft SharePoint Server. A remote attacker can bypass authentication and make an anonymous connection.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SharePoint Server Subscription Edition: All versions

Microsoft SharePoint Server: 2019

Microsoft SharePoint Enterprise Server: 2016

---

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21743

---

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.