| commit | 458d963b5374e86b0ab2550821a59312fafdfaf1 | [log] [tgz] |
|---|---|---|
| author | James Forshaw <forshaw@chromium.org> | Wed Feb 23 22:26:55 2022 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed Feb 23 22:43:44 2022 |
| tree | 2ab5efd9bb18cca9a4b355679eb8ace42401138a | |
| parent | 07639e08226c99f6cad55c9223e9fe1351e5069d [diff] |
[Windows] Use CreateAppContainerToken over NtCreateLowBoxToken. This CL replaces the use of the NtCreateLowBoxToken system call with the CreateAppContainerToken API from kernelbase. This API handles the appcontainer object directories and other quirks which allows us to rely less on other undocumented behaviors. The API is exported from Windows 8 although it is unfortunately undocumented. Bug: 1270309 Change-Id: I4fe7185aa0d3dc85849b6deeb08538c2a47108b6 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3484963 Reviewed-by: Will Harris <wfh@chromium.org> Commit-Queue: Will Harris <wfh@chromium.org> Cr-Commit-Position: refs/heads/main@{#974365} NOKEYCHECK=True GitOrigin-RevId: 9d4152381ceebbd1445489daa4f45f3d728a213c
This directory contains platform-specific sandboxing libraries. Sandboxing is a technique that can improve the security of an application by separating untrustworthy code (or code that handles untrustworthy data) and restricting its privileges and capabilities.
Each platform relies on the operating system's process primitive to isolate code into distinct security principals, and platform-specific technologies are used to implement the privilege reduction. At a high-level:
mac/ uses the Seatbelt sandbox. See the detailed design for more.linux/ uses namespaces and Seccomp-BPF. See the detailed design for more.win/ uses a combination of restricted tokens, distinct job objects, alternate desktops, and integrity levels. See the detailed design for more.Built on top of the low-level sandboxing library is the //sandbox/policy component, which provides concrete policies and helper utilities for sandboxing specific Chromium processes and services. The core sandbox library cannot depend on the policy component.