JPCERT-AT-2021-0027
JPCERT/CC
2021-06-09
Microsoft Corporation
June 2021 Security Updates
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2021-June
Microsoft Corporation
Release Notes
https://msrc.microsoft.com/update-guide/releaseNote
According to Microsoft, the following six vulnerabilities have been confirmed to be exploited in the wild. Please consider applying the security update programs as soon as possible.
CVE-2021-31955
Windows Kernel Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31955
CVE-2021-31956
Windows NTFS Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31956
CVE-2021-33739
Microsoft DWM Core Library Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33739
CVE-2021-33742
Windows MSHTML Platform Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33742
CVE-2021-31199
Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31199
CVE-2021-31201
Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31201
Microsoft Enhanced Cryptographic Provider Elevation of Privilege vulnerabilities (CVE-2021-31199, CVE-2021-31201) are related to Adobe Acrobat and Reader vulnerability (CVE-2021-28550), released in Adobe Security Bulletin APSB21-29 in May 2021.
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
Microsoft Security Updates for June 2021 (Monthly) (Japanese)
https://msrc-blog.microsoft.com/2021/06/08/202106-security-updates/
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
2021-06-09
I. Overview
Microsoft has released June 2021 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
June 2021 Security Updates
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2021-June
Microsoft Corporation
Release Notes
https://msrc.microsoft.com/update-guide/releaseNote
According to Microsoft, the following six vulnerabilities have been confirmed to be exploited in the wild. Please consider applying the security update programs as soon as possible.
CVE-2021-31955
Windows Kernel Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31955
CVE-2021-31956
Windows NTFS Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31956
CVE-2021-33739
Microsoft DWM Core Library Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33739
CVE-2021-33742
Windows MSHTML Platform Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33742
CVE-2021-31199
Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31199
CVE-2021-31201
Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31201
Microsoft Enhanced Cryptographic Provider Elevation of Privilege vulnerabilities (CVE-2021-31199, CVE-2021-31201) are related to Adobe Acrobat and Reader vulnerability (CVE-2021-28550), released in Adobe Security Bulletin APSB21-29 in May 2021.
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
Microsoft Security Updates for June 2021 (Monthly) (Japanese)
https://msrc-blog.microsoft.com/2021/06/08/202106-security-updates/
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/