Detections
Analytics

Security Updates for Microsoft Skype for Business (February 2021)

medium Nessus Plugin ID 146340

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Synopsis

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

Description

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

 - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-24073)

 - A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-24099)

Solution

Microsoft has released the following security updates to address this issue:
-KB5000675
 -KB5000688

See Also

http://www.nessus.org/u?a701d748

http://www.nessus.org/u?ed486606

Plugin Details

Severity: Medium

ID: 146340

File Name: smb_nt_ms21_feb_skype.nasl

Version: 1.6

Type: local

Agent: windows

Published: 2/9/2021

Updated: 1/22/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2021-24073

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:skype_for_business

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 2/9/2021

Vulnerability Publication Date: 2/9/2021

Reference Information

CVE: CVE-2021-24073, CVE-2021-24099

IAVA: 2021-A-0088-S

MSFT: MS21-5000675, MS21-5000688

MSKB: 5000675, 5000688