KLA20155
Multiple vulnerabilities in Microsoft Exchange Server

Updated: 01/12/2023
Detect date
?
01/10/2023
Severity
?
High
Description

Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to spoof user interface, gain privileges, obtain sensitive information.

Below is a complete list of vulnerabilities:

  1. A spoofing vulnerability in Microsoft Exchange Server can be exploited remotely to spoof user interface.
  2. An elevation of privilege vulnerability in Microsoft Exchange Server can be exploited remotely to gain privileges.
  3. An information disclosure vulnerability in Microsoft Exchange Server can be exploited remotely to obtain sensitive information.
Affected products

Microsoft Exchange Server 2016 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 12
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 11

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Original advisories

CVE-2023-21762
CVE-2023-21763
CVE-2023-21761
CVE-2023-21764
CVE-2023-21745

Impacts
?
OSI 
[?]

PE 
[?]

SUI 
[?]
Related products
Microsoft Exchange Server
KB list

5022188
5022143
5022193

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