User Interface Privilege Isolation

User Interface Privilege Isolation (UIPI) is a technology introduced in Windows Vista and Windows Server 2008 to combat shatter attack exploits. By making use of Mandatory Integrity Control, it prevents processes with a lower "integrity level" (IL) from sending messages to higher IL processes (except for a very specific set of UI messages).[1]

Window messages are designed to communicate user action to processes. However, they can be used to run arbitrary code in the receiving process' context. This could be used by a malicious low-privilege processes to run arbitrary code in the context of a higher-privilege process, which constitutes an unauthorized privilege escalation. By restricting the ability of lower-privileged processes to send window messages to higher-privileged processes, UIPI can mitigate these kinds of attacks.[2]

UIPI, and Mandatory Integrity Control more generally, is a security feature but not a security boundary.[3]

Microsoft Office 2010 uses UIPI for its Protected View sandbox to prohibit potentially unsafe documents from modifying components, files, and other resources on a system.[4]

References

  1. ^ "The Windows Vista and Windows Server 2008 Developer Story: Windows Vista Application Development Requirements for User Account Control (UAC)". Microsoft. April 2007. Retrieved 2007-12-07.
  2. ^ Edgar Barbosa. "Windows Vista UIPI" (PDF). COSEINC. Archived from the original (PDF) on 2012-04-18. Retrieved 2012-04-18.
  3. ^ "Microsoft Security Servicing Criteria for Windows". Microsoft.
  4. ^ Malhotra, Mike (August 13, 2009). "Protected View in Office 2010". TechNet. Microsoft. Retrieved September 22, 2017.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.