JPCERT-AT-2023-0004
                                                             JPCERT/CC
                                                            2023-02-15

                 <<< JPCERT/CC Alert 2023-02-15 >>>

         Microsoft Releases February 2023 Security Updates

       https://www.jpcert.or.jp/english/at/2023/at230004.html


I. Overview
Microsoft has released February 2023 Security Updates to address the
vulnerabilities in their products. Remote attackers leveraging
these vulnerabilities may be able to execute arbitrary code. It is
recommended to check the information provided by Microsoft and
apply the updates.

    Microsoft Corporation
    February 2023 Security Updates
    https://msrc.microsoft.com/update-guide/en-us/releaseNote/2023-Feb

    Microsoft Corporation
    Microsoft Security Updates for February 2023 (Monthly) (Japanese)
    https://msrc.microsoft.com/blog/2023/02/202302-security-update/

According to Microsoft, among these vulnerabilities, the following
vulnerabilities have been confirmed to be exploited in the wild. Please
consider applying the security update programs by referring to the
information provided by Microsoft.

    CVE-2023-21715
    Microsoft Office Security Feature Bypass Vulnerability
    https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21715

    CVE-2023-21823
    Windows Graphics Component Elevation of Privilege Vulnerability
    https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21823

    CVE-2023-23376
    Windows Common Log File System Driver Elevation of Privilege Vulnerability
    https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-23376


II. Solution
Please apply the security update programs through Microsoft Update,
Windows Update, etc. as soon as possible.

    Microsoft Update Catalog
    https://www.catalog.update.microsoft.com/

    Windows Update: FAQ
    https://support.microsoft.com/en-us/help/12373/windows-update-faq


III. References
    Microsoft Corporation
    Release Notes
    https://msrc.microsoft.com/update-guide/releaseNote

    Microsoft The Exchange Team
    Released: February 2023 Exchange Server Security Updates
    https://techcommunity.microsoft.com/t5/exchange-team-blog/released-february-2023-exchange-server-security-updates/ba-p/3741058

    Microsoft The Exchange Team
    Exchange Server 2013 End of Support Approaching Fast
    https://techcommunity.microsoft.com/t5/exchange-team-blog/exchange-server-2013-end-of-support-approaching-fast/ba-p/3741491


If you have any information regarding this alert, please contact
JPCERT/CC.

======================================================================
JPCERT Coordination Center (Early Warning Group)
MAIL: ew-info@jpcert.or.jp
https://www.jpcert.or.jp/english/