KLA12342
Multiple vulnerabilities in Microsoft Exchange Server

Updated: 11/25/2021
Detect date
?
11/09/2021
Severity
?
High
Description

Multiple vulnerabilities were found in Microsoft Exchange Server. Malicious users can exploit these vulnerabilities to perform cross-site scripting attack, execute arbitrary code, spoof user interface.

Below is a complete list of vulnerabilities:

  1. A spoofing vulnerability in Microsoft Exchange Server can be exploited remotely to spoof user interface.
  2. A remote code execution vulnerability in Microsoft Exchange Server can be exploited remotely to execute arbitrary code.
Affected products

Microsoft Exchange Server 2019 Cumulative Update 10
Microsoft Exchange Server 2019 Cumulative Update 11
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2016 Cumulative Update 22
Microsoft Exchange Server 2016 Cumulative Update 21

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-2021-41349
CVE-2021-42321
CVE-2021-42305

Impacts
?
ACE 
[?]

XSS/CSS 
[?]

SUI 
[?]
Related products
Microsoft Exchange Server
CVE-IDS
?
CVE-2021-413490.0Unknown
CVE-2021-423210.0Unknown
CVE-2021-423050.0Unknown
KB list

5007409

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