JPCERT-AT-2023-0002
JPCERT/CC
2023-01-11
Microsoft Corporation
January 2023 Security Updates
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2023-Jan
Microsoft Corporation
Microsoft Security Updates for January 2023 (Monthly) (Japanese)
https://msrc-blog.microsoft.com/2023/1/10/202301-security-update/
According to Microsoft, among these vulnerabilities, the following vulnerability has been confirmed to be exploited in the wild. Please consider applying the security update programs by referring to the information provided by Microsoft.
CVE-2023-21674
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21674
Microsoft Update Catalog
https://www.catalog.update.microsoft.com/
Windows Update: FAQ
https://support.microsoft.com/en-us/help/12373/windows-update-faq
Microsoft Corporation
Release Notes
https://msrc.microsoft.com/update-guide/releaseNote
Microsoft Corporation
Windows 8.1 support will end on January 10, 2023
https://support.microsoft.com/en-us/windows/windows-8-1-support-will-end-on-january-10-2023-3cfd4cde-f611-496a-8057-923fba401e93
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/
JPCERT/CC
2023-01-11
I. Overview
Microsoft has released January 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
January 2023 Security Updates
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2023-Jan
Microsoft Corporation
Microsoft Security Updates for January 2023 (Monthly) (Japanese)
https://msrc-blog.microsoft.com/2023/1/10/202301-security-update/
According to Microsoft, among these vulnerabilities, the following vulnerability has been confirmed to be exploited in the wild. Please consider applying the security update programs by referring to the information provided by Microsoft.
CVE-2023-21674
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21674
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 Corporation
Windows 8.1 support will end on January 10, 2023
https://support.microsoft.com/en-us/windows/windows-8-1-support-will-end-on-january-10-2023-3cfd4cde-f611-496a-8057-923fba401e93
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/