Vulnerability identifier: #VU65212

Vulnerability risk: Low

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-2022-33633

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Skype for Business Server
Server applications / Conferencing, Collaboration and VoIP solutions
Lync Server
Server applications / Other server solutions

Vendor: Microsoft

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in Skype for Business and Lync. A remote administrator can pass specially crafted input to the application and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Skype for Business Server: 2015 CU12 - 2019 CU6

Lync Server: 2013 CU10

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-33633

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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.