57186b30ac
Add the ability to specify a `ProcessRequirement` in `LaunchOptions` that will be passed down to `MachPortRendezvousServer`. Use it within `UtilitySandboxedProcessLauncherDelegate` to ensure that the process hosting the network service is signed with the same signing identity as the browser process before it can initiate a Mojo connection. This prevents a local attacker from replacing the utility process executable on disk to gain access to the key used to encrypt cookies. This is gated by a feature flag and will be rolled out via Finch to ensure there is no impact to stability and performance. Bug: 362301042 Change-Id: I16c6a1349a8d3a8a47a1b90f0a86526ef90235b9 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5924750 Reviewed-by: Mark Mentovai <mark@chromium.org> Reviewed-by: Will Harris <wfh@chromium.org> Reviewed-by: Dmitry Gozman <dgozman@chromium.org> Commit-Queue: Mark Rowe <markrowe@chromium.org> Cr-Commit-Position: refs/heads/main@{#1368564}
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
// Copyright 2020 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CONTENT_BROWSER_UTILITY_SANDBOX_DELEGATE_H_
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#define CONTENT_BROWSER_UTILITY_SANDBOX_DELEGATE_H_
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#include <optional>
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#include "base/command_line.h"
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#include "base/environment.h"
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#include "base/files/file_path.h"
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#include "build/build_config.h"
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#include "content/common/content_export.h"
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#include "content/public/common/sandboxed_process_launcher_delegate.h"
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#include "content/public/common/zygote/zygote_buildflags.h"
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#include "sandbox/policy/mojom/sandbox.mojom.h"
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#if BUILDFLAG(USE_ZYGOTE)
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#include "content/public/common/zygote/zygote_handle.h"
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#endif // BUILDFLAG(USE_ZYGOTE)
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#if BUILDFLAG(IS_WIN)
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#include "sandbox/win/src/sandbox_policy.h"
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#endif // BUILDFLAG(IS_WIN)
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#if BUILDFLAG(IS_MAC)
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#include "base/mac/process_requirement.h"
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#endif // BUILDFLAG(IS_MAC)
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namespace content {
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class CONTENT_EXPORT UtilitySandboxedProcessLauncherDelegate
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: public SandboxedProcessLauncherDelegate {
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public:
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UtilitySandboxedProcessLauncherDelegate(sandbox::mojom::Sandbox sandbox_type,
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const base::EnvironmentMap& env,
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const base::CommandLine& cmd_line);
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~UtilitySandboxedProcessLauncherDelegate() override;
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sandbox::mojom::Sandbox GetSandboxType() override;
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#if BUILDFLAG(IS_WIN)
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std::string GetSandboxTag() override;
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bool GetAppContainerId(std::string* appcontainer_id) override;
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bool DisableDefaultPolicy() override;
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bool ShouldLaunchElevated() override;
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bool InitializeConfig(sandbox::TargetConfig* config) override;
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bool ShouldUnsandboxedRunInJob() override;
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bool CetCompatible() override;
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bool PreSpawnTarget(sandbox::TargetPolicy* policy) override;
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// Set preload libraries to transfer as part of the sandbox delegate data,
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// which will used in utility_main to preload these libraries before lockdown.
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void SetPreloadLibraries(const std::vector<base::FilePath>& preloads) {
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preload_libraries_ = preloads;
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}
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#endif // BUILDFLAG(IS_WIN)
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#if BUILDFLAG(USE_ZYGOTE)
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ZygoteCommunication* GetZygote() override;
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#endif // BUILDFLAG(USE_ZYGOTE)
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#if BUILDFLAG(IS_POSIX)
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base::EnvironmentMap GetEnvironment() override;
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#endif // BUILDFLAG(IS_POSIX)
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#if BUILDFLAG(USE_ZYGOTE)
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void SetZygote(ZygoteCommunication* handle);
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#endif // BUILDFLAG(USE_ZYGOTE_HANDLE)
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#if BUILDFLAG(IS_MAC)
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std::optional<base::mac::ProcessRequirement> GetProcessRequirement() override;
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#endif // BUILDFLAG(IS_MAC)
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private:
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#if BUILDFLAG(IS_POSIX)
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base::EnvironmentMap env_;
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#endif // BUILDFLAG(IS_POSIX)
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#if BUILDFLAG(IS_WIN)
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std::vector<base::FilePath> preload_libraries_;
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#endif // BUILDFLAG(IS_WIN)
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#if BUILDFLAG(USE_ZYGOTE)
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std::optional<raw_ptr<ZygoteCommunication>> zygote_;
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#endif // BUILDFLAG(USE_ZYGOTE)
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const sandbox::mojom::Sandbox sandbox_type_;
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#if BUILDFLAG(IS_WIN)
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// If true then App Container will not be used for this utility process.
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const bool app_container_disabled_;
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#endif // BUILDFLAG(IS_WIN)
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base::CommandLine cmd_line_;
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};
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} // namespace content
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#endif // CONTENT_BROWSER_UTILITY_SANDBOX_DELEGATE_H_
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