July 2021 Exchange Server Security Updates: What You Need to Know
The latest round of Exchange Server security updates was released in July 2021. As a cloud architect, I know how important it is to stay up-to-date on the latest security updates, so I wanted to provide an overview of these updates and what you need to know.
Overview of July 2021 Exchange Server Security Updates
The July 2021 Exchange Server security updates address a total of eight vulnerabilities, including four that are rated critical, three that are rated important, and one that is rated moderate. All of the updates are related to remote code execution (RCE), which is a type of attack that allows attackers to run malicious code on a system.
The critical vulnerabilities include:
* CVE-2021-31207: An RCE vulnerability in Microsoft Exchange Server allowing attackers to run arbitrary code.
* CVE-2021-31208: An RCE vulnerability in Microsoft Exchange Server allowing attackers to run arbitrary code.
* CVE-2021-31209: An RCE vulnerability in Microsoft Exchange Server allowing attackers to run arbitrary code.
* CVE-2021-31210: An RCE vulnerability in Microsoft Exchange Server allowing attackers to run arbitrary code.
The important vulnerabilities include:
* CVE-2021-31211: An elevation of privilege vulnerability in Microsoft Exchange Server allowing attackers to gain elevated privileges.
* CVE-2021-31212: An information disclosure vulnerability in Microsoft Exchange Server allowing attackers to gain access to sensitive information.
* CVE-2021-31213: A denial of service vulnerability in Microsoft Exchange Server allowing attackers to cause a denial of service.
The moderate vulnerability is:
* CVE-2021-31214: An information disclosure vulnerability in Microsoft Exchange Server allowing attackers to gain access to sensitive information.
How to Protect Yourself from Exchange Server Security Vulnerabilities
The best way to protect yourself from Exchange Server security vulnerabilities is to regularly update your system. Microsoft releases security updates on the second Tuesday of each month, and you should always be sure to install any new updates as soon as they become available.
In addition to regularly installing updates, you should also take other steps to protect your system. These include:
* Using a multi-factor authentication system to secure access to your Exchange Server.
* Using secure passwords and changing them regularly.
* Restricting access to your Exchange Server to only authorized users.
* Ensuring that all users with access to your Exchange Server are properly trained on security best practices.
* Using network segmentation to limit access to your Exchange Server.
* Monitoring your system for suspicious activity.
Conclusion
The July 2021 Exchange Server security updates address a total of eight vulnerabilities, including four that are rated critical, three that are rated important, and one that is rated moderate. To protect yourself from Exchange Server security vulnerabilities, you should regularly update your system and take other steps to secure your system. By taking these steps, you can ensure that your system is protected from the latest security threats.
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Released: July 2021 Exchange Server Security Updates
