Security Updates for Microsoft SharePoint Server 2019 (September 2021)

high Nessus Plugin ID 153389
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The Microsoft SharePoint Server 2019 installation on the remote host is affected by a server spoofing vulnerability.

Description

The Microsoft SharePoint Server 2019 installation on the remote host is missing security updates. It is, therefore, affected by a Server Spoofing Vulnerability.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released the following security updates to address these issues:
-KB5002018

See Also

https://support.microsoft.com/en-us/help/5002018

Plugin Details

Severity: High

ID: 153389

File Name: smb_nt_ms21_sep_office_sharepoint_2019.nasl

Version: 1.3

Type: local

Agent: windows

Published: 9/14/2021

Updated: 9/20/2021

Dependencies: microsoft_sharepoint_installed.nbin, smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl

Risk Information

CVSS Score Source: CVE-2021-38651

VPR

Risk Factor: Medium

Score: 5.5

CVSS v2

Risk Factor: High

Base Score: 7

Temporal Score: 5.2

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

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

CVSS v3

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.6

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:sharepoint_server

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 9/14/2021

Vulnerability Publication Date: 9/14/2021

Reference Information

CVE: CVE-2021-38651

MSKB: 5002018

MSFT: MS21-5002018

IAVA: 2021-A-0424