Vulnerability identifier: #VU72171

Vulnerability risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-21710

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Exchange Server
Server applications / Mail servers

Vendor: Microsoft

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote user with administrative privileges can send a specially crafted request and execute arbitrary code in the context of the server's account.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Exchange Server: 2019 Preview 15.02.0196.000 - 2019 CU12 Jan23SU 15.02.1118.021, 2016 Preview 15.01.0225.016 - 2016 CU23 Jan23SU 15.01.2507.017, 2013 RTM 15.00.0516.032 - 2013 CU23 Jan23SU 15.00.1497.045

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21710

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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