Windows TDX elevation of privilege vulnerability: June 13, 2017

Summary

An elevation of privilege vulnerability exists when tdx.sys fails to check the length of a buffer prior to copying memory to the buffer. To exploit the vulnerability, in a local attack scenario, an attacker could run a specially crafted application to elevate the attacker's privilege level. An attacker who successfully exploited this vulnerability could run processes in an elevated context. However, an attacker must first gain access to the local system with the ability to execute a malicious application in order to exploit this vulnerability.

The security update addresses the vulnerability by changing how tdx.sys validates buffer length.

To learn more about the vulnerability, go to CVE-2017-0296.

More Information

Important

• If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

How to obtain and install the update

Deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

Security update deployment information: June 13, 2017

More Information

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2008 file information

How to obtain help and support for this security update

Help for installing updates: Windows Update: FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

File information

File hash information

For all supported ia64-based versions

For all supported x64-based versions