Security Updates for Microsoft Skype for Business and Microsoft Lync (April 2022)

medium Nessus Plugin ID 159763

Synopsis

The Microsoft Skype for Business or Microsoft Lync installation on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft Skype for Business or Microsoft Lync installation on the remote host is missing security updates.
It is, therefore, affected by multiple vulnerabilities:

- An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2022-26911)

- A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2022-26910)

Solution

Microsoft has released the following security updates to address this issue:
-KB5012681
-KB5012686

See Also

https://support.microsoft.com/en-us/help/5012681

https://support.microsoft.com/en-us/help/5012686

Plugin Details

Severity: Medium

ID: 159763

File Name: smb_nt_ms22_apr_skype.nasl

Version: 1.5

Type: local

Agent: windows

Published: 4/15/2022

Updated: 7/19/2022

Risk Information

VPR

Risk Factor: Medium

Score: 6.1

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2022-26910

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: E:U/RL:O/RC:C

CVSS Score Source: CVE-2022-26911

Vulnerability Information

CPE: cpe:/a:microsoft:skype_for_business, cpe:/a:microsoft:lync

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 4/12/2022

Vulnerability Publication Date: 4/12/2022

Reference Information

CVE: CVE-2022-26910, CVE-2022-26911

MSKB: 5012681, 5012686

MSFT: MS22-5012681, MS22-5012686

IAVA: 2022-A-0155-S