diff options
Diffstat (limited to 'security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp')
| -rw-r--r-- | security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp | 471 |
1 files changed, 0 insertions, 471 deletions
diff --git a/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp b/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp deleted file mode 100644 index d3aab815f..000000000 --- a/security/sandbox/win/src/sandboxbroker/sandboxBroker.cpp +++ /dev/null @@ -1,471 +0,0 @@ -/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* vim: set ts=2 et sw=2 tw=80: */ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include "sandboxBroker.h" - -#include "base/win/windows_version.h" -#include "mozilla/Assertions.h" -#include "mozilla/Logging.h" -#include "sandbox/win/src/sandbox.h" -#include "sandbox/win/src/security_level.h" - -namespace mozilla -{ - -sandbox::BrokerServices *SandboxBroker::sBrokerService = nullptr; - -static LazyLogModule sSandboxBrokerLog("SandboxBroker"); - -#define LOG_E(...) MOZ_LOG(sSandboxBrokerLog, LogLevel::Error, (__VA_ARGS__)) - -/* static */ -void -SandboxBroker::Initialize(sandbox::BrokerServices* aBrokerServices) -{ - sBrokerService = aBrokerServices; -} - -SandboxBroker::SandboxBroker() -{ - if (sBrokerService) { - mPolicy = sBrokerService->CreatePolicy(); - } else { - mPolicy = nullptr; - } -} - -bool -SandboxBroker::LaunchApp(const wchar_t *aPath, - const wchar_t *aArguments, - const bool aEnableLogging, - void **aProcessHandle) -{ - if (!sBrokerService || !mPolicy) { - return false; - } - - // Set stdout and stderr, to allow inheritance for logging. - mPolicy->SetStdoutHandle(::GetStdHandle(STD_OUTPUT_HANDLE)); - mPolicy->SetStderrHandle(::GetStdHandle(STD_ERROR_HANDLE)); - - // If logging enabled, set up the policy. - if (aEnableLogging) { - ApplyLoggingPolicy(); - } - -#if defined(DEBUG) - // Allow write access to TEMP directory in debug builds for logging purposes. - // The path from GetTempPathW can have a length up to MAX_PATH + 1, including - // the null, so we need MAX_PATH + 2, so we can add an * to the end. - wchar_t tempPath[MAX_PATH + 2]; - uint32_t pathLen = ::GetTempPathW(MAX_PATH + 1, tempPath); - if (pathLen > 0) { - // GetTempPath path ends with \ and returns the length without the null. - tempPath[pathLen] = L'*'; - tempPath[pathLen + 1] = L'\0'; - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, tempPath); - } -#endif - - // Ceate the sandboxed process - PROCESS_INFORMATION targetInfo = {0}; - sandbox::ResultCode result; - result = sBrokerService->SpawnTarget(aPath, aArguments, mPolicy, &targetInfo); - if (sandbox::SBOX_ALL_OK != result) { - return false; - } - - // The sandboxed process is started in a suspended state, resume it now that - // we've set things up. - ResumeThread(targetInfo.hThread); - CloseHandle(targetInfo.hThread); - - // Return the process handle to the caller - *aProcessHandle = targetInfo.hProcess; - - return true; -} - -#define SANDBOX_ENSURE_SUCCESS(result, message) \ - do { \ - MOZ_ASSERT(sandbox::SBOX_ALL_OK == result, message); \ - if (sandbox::SBOX_ALL_OK != result) \ - return false; \ - } while (0) - -bool -SandboxBroker::SetSecurityLevelForPluginProcess(int32_t aSandboxLevel) -{ - if (!mPolicy) { - return false; - } - - sandbox::JobLevel jobLevel; - sandbox::TokenLevel accessTokenLevel; - sandbox::IntegrityLevel initialIntegrityLevel; - sandbox::IntegrityLevel delayedIntegrityLevel; - - if (aSandboxLevel > 2) { - jobLevel = sandbox::JOB_UNPROTECTED; - accessTokenLevel = sandbox::USER_LIMITED; - initialIntegrityLevel = sandbox::INTEGRITY_LEVEL_LOW; - delayedIntegrityLevel = sandbox::INTEGRITY_LEVEL_LOW; - } else if (aSandboxLevel == 2) { - jobLevel = sandbox::JOB_UNPROTECTED; - accessTokenLevel = sandbox::USER_INTERACTIVE; - initialIntegrityLevel = sandbox::INTEGRITY_LEVEL_LOW; - delayedIntegrityLevel = sandbox::INTEGRITY_LEVEL_LOW; - } else { - jobLevel = sandbox::JOB_NONE; - accessTokenLevel = sandbox::USER_NON_ADMIN; - initialIntegrityLevel = sandbox::INTEGRITY_LEVEL_MEDIUM; - delayedIntegrityLevel = sandbox::INTEGRITY_LEVEL_MEDIUM; - } - - sandbox::ResultCode result = mPolicy->SetJobLevel(jobLevel, - 0 /* ui_exceptions */); - SANDBOX_ENSURE_SUCCESS(result, - "Setting job level failed, have you set memory limit when jobLevel == JOB_NONE?"); - - result = mPolicy->SetTokenLevel(sandbox::USER_RESTRICTED_SAME_ACCESS, - accessTokenLevel); - SANDBOX_ENSURE_SUCCESS(result, - "Lockdown level cannot be USER_UNPROTECTED or USER_LAST if initial level was USER_RESTRICTED_SAME_ACCESS"); - - result = mPolicy->SetIntegrityLevel(initialIntegrityLevel); - SANDBOX_ENSURE_SUCCESS(result, - "SetIntegrityLevel should never fail, what happened?"); - - result = mPolicy->SetDelayedIntegrityLevel(delayedIntegrityLevel); - SANDBOX_ENSURE_SUCCESS(result, - "SetDelayedIntegrityLevel should never fail, what happened?"); - - sandbox::MitigationFlags mitigations = - sandbox::MITIGATION_BOTTOM_UP_ASLR | - sandbox::MITIGATION_HEAP_TERMINATE | - sandbox::MITIGATION_SEHOP | - sandbox::MITIGATION_DEP_NO_ATL_THUNK | - sandbox::MITIGATION_DEP; - - result = mPolicy->SetProcessMitigations(mitigations); - SANDBOX_ENSURE_SUCCESS(result, - "Invalid flags for SetProcessMitigations."); - - // Add the policy for the client side of a pipe. It is just a file - // in the \pipe\ namespace. We restrict it to pipes that start with - // "chrome." so the sandboxed process cannot connect to system services. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, - L"\\??\\pipe\\chrome.*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - // Add the policy for the client side of the crash server pipe. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, - L"\\??\\pipe\\gecko-crash-server-pipe.*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - // The NPAPI process needs to be able to duplicate shared memory to the - // content process and broker process, which are Section type handles. - // Content and broker are for e10s and non-e10s cases. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_HANDLES, - sandbox::TargetPolicy::HANDLES_DUP_ANY, - L"Section"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_HANDLES, - sandbox::TargetPolicy::HANDLES_DUP_BROKER, - L"Section"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - // The following is required for the Java plugin. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, - L"\\??\\pipe\\jpi2_pid*_pipe*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - // These register keys are used by the file-browser dialog box. They - // remember the most-recently-used folders. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_ANY, - L"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ComDlg32\\OpenSavePidlMRU\\*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_ANY, - L"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\ComDlg32\\LastVisitedPidlMRULegacy\\*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - return true; -} - -bool -SandboxBroker::SetSecurityLevelForGMPlugin(SandboxLevel aLevel) -{ - if (!mPolicy) { - return false; - } - - auto result = mPolicy->SetJobLevel(sandbox::JOB_LOCKDOWN, 0); - SANDBOX_ENSURE_SUCCESS(result, - "SetJobLevel should never fail with these arguments, what happened?"); - auto level = (aLevel == Restricted) ? - sandbox::USER_RESTRICTED : sandbox::USER_LOCKDOWN; - result = mPolicy->SetTokenLevel(sandbox::USER_RESTRICTED_SAME_ACCESS, level); - SANDBOX_ENSURE_SUCCESS(result, - "SetTokenLevel should never fail with these arguments, what happened?"); - - result = mPolicy->SetAlternateDesktop(true); - SANDBOX_ENSURE_SUCCESS(result, - "Failed to create alternate desktop for sandbox."); - - result = mPolicy->SetIntegrityLevel(sandbox::INTEGRITY_LEVEL_LOW); - MOZ_ASSERT(sandbox::SBOX_ALL_OK == result, - "SetIntegrityLevel should never fail with these arguments, what happened?"); - - result = - mPolicy->SetDelayedIntegrityLevel(sandbox::INTEGRITY_LEVEL_UNTRUSTED); - SANDBOX_ENSURE_SUCCESS(result, - "SetIntegrityLevel should never fail with these arguments, what happened?"); - - sandbox::MitigationFlags mitigations = - sandbox::MITIGATION_BOTTOM_UP_ASLR | - sandbox::MITIGATION_HEAP_TERMINATE | - sandbox::MITIGATION_SEHOP | - sandbox::MITIGATION_DEP_NO_ATL_THUNK | - sandbox::MITIGATION_DEP; - - result = mPolicy->SetProcessMitigations(mitigations); - SANDBOX_ENSURE_SUCCESS(result, - "Invalid flags for SetProcessMitigations."); - - mitigations = - sandbox::MITIGATION_STRICT_HANDLE_CHECKS | - sandbox::MITIGATION_DLL_SEARCH_ORDER; - - result = mPolicy->SetDelayedProcessMitigations(mitigations); - SANDBOX_ENSURE_SUCCESS(result, - "Invalid flags for SetDelayedProcessMitigations."); - - // Add the policy for the client side of a pipe. It is just a file - // in the \pipe\ namespace. We restrict it to pipes that start with - // "chrome." so the sandboxed process cannot connect to system services. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, - L"\\??\\pipe\\chrome.*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - // Add the policy for the client side of the crash server pipe. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, - L"\\??\\pipe\\gecko-crash-server-pipe.*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - -#ifdef DEBUG - // The plugin process can't create named events, but we'll - // make an exception for the events used in logging. Removing - // this will break EME in debug builds. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_SYNC, - sandbox::TargetPolicy::EVENTS_ALLOW_ANY, - L"ChromeIPCLog.*"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); -#endif - - // The following rules were added because, during analysis of an EME - // plugin during development, these registry keys were accessed when - // loading the plugin. Commenting out these policy exceptions caused - // plugin loading to fail, so they are necessary for proper functioning - // of at least one EME plugin. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_CURRENT_USER"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_CURRENT_USER\\Control Panel\\Desktop"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_CURRENT_USER\\Control Panel\\Desktop\\LanguageConfiguration"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\SideBySide"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - - // The following rules were added because, during analysis of an EME - // plugin during development, these registry keys were accessed when - // loading the plugin. Commenting out these policy exceptions did not - // cause anything to break during initial testing, but might cause - // unforeseen issues down the road. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_LOCAL_MACHINE\\SOFTWARE\\Policies\\Microsoft\\MUI\\Settings"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_CURRENT_USER\\Software\\Policies\\Microsoft\\Control Panel\\Desktop"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_CURRENT_USER\\Control Panel\\Desktop\\PreferredUILanguages"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\SideBySide\\PreferExternalManifest"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - // The following rules were added to allow a GMP to be loaded when any - // AppLocker DLL rules are specified. If the rules specifically block the DLL - // then it will not load. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_READONLY, - L"\\Device\\SrpDevice"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Control\\Srp\\GP\\"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - // On certain Windows versions there is a double slash before GP in the path. - result = mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Control\\Srp\\\\GP\\"); - SANDBOX_ENSURE_SUCCESS(result, - "With these static arguments AddRule should never fail, what happened?"); - - - return true; -} -#undef SANDBOX_ENSURE_SUCCESS - -bool -SandboxBroker::AllowReadFile(wchar_t const *file) -{ - if (!mPolicy) { - return false; - } - - auto result = - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_READONLY, - file); - if (sandbox::SBOX_ALL_OK != result) { - LOG_E("Failed (ResultCode %d) to add read access to: %S", result, file); - return false; - } - - return true; -} - -bool -SandboxBroker::AllowReadWriteFile(wchar_t const *file) -{ - if (!mPolicy) { - return false; - } - - auto result = - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_ANY, - file); - if (sandbox::SBOX_ALL_OK != result) { - LOG_E("Failed (ResultCode %d) to add read/write access to: %S", - result, file); - return false; - } - - return true; -} - -bool -SandboxBroker::AllowDirectory(wchar_t const *dir) -{ - if (!mPolicy) { - return false; - } - - auto result = - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES, - sandbox::TargetPolicy::FILES_ALLOW_DIR_ANY, - dir); - if (sandbox::SBOX_ALL_OK != result) { - LOG_E("Failed (ResultCode %d) to add directory access to: %S", result, dir); - return false; - } - - return true; -} - -bool -SandboxBroker::AddTargetPeer(HANDLE aPeerProcess) -{ - if (!sBrokerService) { - return false; - } - - sandbox::ResultCode result = sBrokerService->AddTargetPeer(aPeerProcess); - return (sandbox::SBOX_ALL_OK == result); -} - -void -SandboxBroker::ApplyLoggingPolicy() -{ - MOZ_ASSERT(mPolicy); - - // Add dummy rules, so that we can log in the interception code. - // We already have a file interception set up for the client side of pipes. - // Also, passing just "dummy" for file system policy causes win_utils.cc - // IsReparsePoint() to loop. - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_NAMED_PIPES, - sandbox::TargetPolicy::NAMEDPIPES_ALLOW_ANY, L"dummy"); - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_PROCESS, - sandbox::TargetPolicy::PROCESS_MIN_EXEC, L"dummy"); - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_REGISTRY, - sandbox::TargetPolicy::REG_ALLOW_READONLY, - L"HKEY_CURRENT_USER\\dummy"); - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_SYNC, - sandbox::TargetPolicy::EVENTS_ALLOW_READONLY, L"dummy"); - mPolicy->AddRule(sandbox::TargetPolicy::SUBSYS_HANDLES, - sandbox::TargetPolicy::HANDLES_DUP_BROKER, L"dummy"); -} - -SandboxBroker::~SandboxBroker() -{ - if (mPolicy) { - mPolicy->Release(); - mPolicy = nullptr; - } -} - -} |