Detections
Analytics

Security Updates for Microsoft SharePoint Server 2019 (January 2021)

high Nessus Plugin ID 145092

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Synopsis

The Microsoft SharePoint Server 2019 installation on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft SharePoint Server 2019 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-2021-1641, CVE-2021-1717)

 - An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
 (CVE-2021-1712, CVE-2021-1719)

 - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-1707, CVE-2021-1715, CVE-2021-1716) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released the following security updates to address this issue:
-KB4493161
 -KB4493162

See Also

http://www.nessus.org/u?08f9a93f

http://www.nessus.org/u?57386ea2

Plugin Details

Severity: High

ID: 145092

File Name: smb_nt_ms21_jan_office_sharepoint_2019.nasl

Version: 1.7

Type: local

Agent: windows

Published: 1/20/2021

Updated: 6/6/2024

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2021-1716

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS Score Source: CVE-2021-1707

Vulnerability Information

CPE: cpe:/a:microsoft:sharepoint_server:2019

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 1/12/2021

Vulnerability Publication Date: 1/12/2021

Reference Information

CVE: CVE-2021-1641, CVE-2021-1707, CVE-2021-1712, CVE-2021-1715, CVE-2021-1716, CVE-2021-1717, CVE-2021-1719

IAVA: 2021-A-0019-S

MSFT: MS21-4493161, MS21-4493162

MSKB: 4493161, 4493162