Information disclosure in Skype for Business server



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-41763
CWE-ID CWE-200
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
 Skype for Business Server
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor Microsoft

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU81729

Risk: High

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-41763

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can gain unauthorized access to IP addresses or port numbers or both to the attacker.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Skype for Business Server: before 6.0.9319.869

CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-41763


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?

Yes. This vulnerability is being exploited in the wild.



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