Security Updates for Exchange (October 2020)

high Nessus Plugin ID 141491

Synopsis

The Microsoft Exchange Server installed on the remote host is missing a security update.

Description

The Microsoft Exchange Server installed on the remote host is missing a security update. It is, therefore, affected by the following vulnerability :

- An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user. (CVE-2020-16969)

Solution

Microsoft has released KB4581424 to address this issue.

See Also

http://www.nessus.org/u?039d66e9

Plugin Details

Severity: High

ID: 141491

File Name: smb_nt_ms20_oct_exchange.nasl

Version: 1.9

Type: local

Agent: windows

Published: 10/16/2020

Updated: 6/6/2024

Supported Sensors: Frictionless Assessment Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2020-16969

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:exchange_server:2016, cpe:/a:microsoft:exchange_server:2019

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 10/13/2020

Vulnerability Publication Date: 10/13/2020

Reference Information

CVE: CVE-2020-16969

IAVA: 2020-A-0461-S

MSFT: MS20-4581424

MSKB: 4581424