com.apple.WebKit.WebAuthnProcess.sb.in [plain text]
; Copyright (C) 2010-2020 Apple Inc. All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
; 1. Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
; THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
; BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
; CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
; ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
; THE POSSIBILITY OF SUCH DAMAGE.
(version 1)
(deny default (with partial-symbolication))
(allow system-audit file-read-metadata)
;;;
;;; The following rules were originally contained in 'system.sb'. We are duplicating them here so we can
;;; remove unneeded sandbox extensions.
;;;
;;; Allow registration of per-pid services.
(allow mach-register (local-name-prefix ""))
;;; Allow read access to standard system paths.
(allow file-read*
(require-all (file-mode #o0004)
(require-any (subpath "/Library/Filesystems/NetFSPlugins")
(subpath "/Library/Apple/System")
(subpath "/Library/Preferences/Logging") ; Logging Rethink
(subpath "/System")
(subpath "/private/var/db/dyld")
(subpath "/private/var/db/timezone")
(subpath "/usr/lib")
(subpath "/usr/share"))))
;;; Allow reading internal profiles on development builds
(allow file-read*
(require-all (file-mode #o0004)
(subpath "/AppleInternal/Library/Preferences/Logging")
(system-attribute apple-internal)))
;;; Allow mapping of system frameworks + dylibs
(allow file-map-executable
(subpath "/Library/Apple/System/Library/Frameworks")
(subpath "/Library/Apple/System/Library/PrivateFrameworks")
(subpath "/System/Library/Frameworks")
(subpath "/System/Library/PrivateFrameworks")
(subpath "/usr/lib")
(subpath "/usr/appleinternal/lib/sanitizers"))
(allow file-read-metadata
(literal "/etc")
(literal "/tmp")
(literal "/var")
(literal "/private/etc/localtime"))
;;; Allow access to standard special files.
(allow file-read*
(literal "/dev/autofs_nowait")
(literal "/dev/random")
(literal "/dev/urandom")
(literal "/private/etc/master.passwd")
(literal "/private/etc/passwd"))
(allow file-read*
file-write-data
(literal "/dev/null")
(literal "/dev/zero"))
(allow file-read*
file-write-data
file-ioctl
(literal "/dev/dtracehelper"))
;;; Allow creation of core dumps.
(allow file-write-create
(require-all (prefix "/cores/")
(vnode-type REGULAR-FILE)))
;;; Allow IPC to standard system agents.
(allow ipc-posix-shm-read*
(ipc-posix-name "apple.shm.notification_center")
(ipc-posix-name-prefix "apple.cfprefs."))
;;;
;;; End rules originally copied from 'system.sb'
;;;
;;; process-info* defaults to allow; deny it and then allow operations we actually need.
(deny process-info*)
(allow process-info-pidinfo)
(allow process-info-setcontrol (target self))
(allow process-codesigning-status*)
(deny sysctl*)
(allow sysctl-read
(sysctl-name
"hw.byteorder"
"hw.busfrequency_max"
"hw.cputype"
"hw.machine"
"hw.memsize"
"hw.model"
"hw.ncpu"
"hw.vectorunit"
"kern.bootargs" ;; <rdar://problem/47738015>
"kern.hostname"
"kern.maxfilesperproc"
"kern.memorystatus_level"
"kern.osproductversion" ;; <rdar://problem/51756739>
"kern.osversion"
"kern.safeboot"
"kern.version"
"machdep.cpu.brand_string"
"security.mac.sandbox.sentinel"
"kern.tcsm_enable"
"kern.tcsm_available"
"vm.footprint_suspend")
(sysctl-name-regex #"^hw.(active|avail)cpu")
(sysctl-name-regex #"^hw.(busfrequency|cachelinesize|cpufrequency(|_max)|pagesize|tbfrequency)(|_compat)")
(sysctl-name-regex #"^hw.l.+cachesize")
(sysctl-name-regex #"^hw.(logical|physical)cpu_max")
(sysctl-name-regex #"^hw.optional\.")
(sysctl-name-regex #"^kern.os(release|type|variant_status|version)")
(sysctl-name-regex #"^net.routetable")
)
(allow sysctl-write
(sysctl-name
"kern.tcsm_enable"))
(deny mach-lookup (xpc-service-name-prefix ""))
(allow mach-lookup
(xpc-service-name "com.apple.PerformanceAnalysis.animationperfd")
(xpc-service-name "com.apple.accessibility.mediaaccessibilityd")
(xpc-service-name "com.apple.audio.SandboxHelper")
(xpc-service-name "com.apple.coremedia.videodecoder")
(xpc-service-name "com.apple.coremedia.videoencoder")
(xpc-service-name "com.apple.hiservices-xpcservice")
(xpc-service-name "com.apple.print.normalizerd")
)
;; Utility functions for home directory relative path filters
(define (home-regex home-relative-regex)
(regex (string-append "^" (regex-quote (param "HOME_DIR")) home-relative-regex)))
(define (home-subpath home-relative-subpath)
(subpath (string-append (param "HOME_DIR") home-relative-subpath)))
(define (home-literal home-relative-literal)
(literal (string-append (param "HOME_DIR") home-relative-literal)))
(define (allow-read-directory-and-issue-read-extensions path)
(if path
(begin
(allow file-read* (subpath path))
(allow file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read") (subpath path))))))
(define (allow-read-write-directory-and-issue-read-write-extensions path)
(if path
(begin
(allow file-read* file-write* (subpath path))
(allow file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read") (subpath path)))
(allow file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read-write") (subpath path))))))
;; Remove when <rdar://problem/29646094> is fixed.
(define (HEX-pattern-match-generator pattern-descriptor)
(letrec ((pattern-string ""))
(for-each (lambda (repeat-count)
(if (zero? repeat-count)
(set! pattern-string (string-append pattern-string "-"))
(let appender ((count repeat-count))
(if (> count 0)
(begin
(set! pattern-string (string-append pattern-string "[0-9A-F]"))
(appender (- count 1)))))))
pattern-descriptor)
pattern-string))
;; return a regex pattern matching string for 8-4-4-4-12 UUIDs:
(define (uuid-HEX-pattern-match-string)
(HEX-pattern-match-generator '(8 0 4 0 4 0 4 0 12)))
;; global to hold the computed UUID matching pattern.
(define *uuid-pattern* "")
(define (uuid-regex-string)
(if (zero? (string-length *uuid-pattern*))
(set! *uuid-pattern* (uuid-HEX-pattern-match-string)))
*uuid-pattern*)
;; Read-only preferences and data
(allow file-read*
;; Basic system paths
(subpath "/Library/Dictionaries")
(subpath "/Library/Fonts")
(subpath "/Library/Frameworks")
(subpath "/Library/Managed Preferences")
(subpath "/Library/Speech/Synthesizers")
(regex #"^/private/etc/(hosts|group|passwd)$")
(literal "/Library/Application Support/CrashReporter/SubmitDiagInfo.domains")
;; System and user preferences
(home-literal "/.CFUserTextEncoding")
;; FIXME: This should be removed when <rdar://problem/8957845> is fixed.
(home-subpath "/Library/Fonts")
(subpath "/Library/Audio/Plug-Ins/HAL")
(home-subpath "/Library/Dictionaries"))
(allow file-read-data
(literal "/usr/local/lib/log") ; <rdar://problem/36629495>
;; Needed for AES3 support
(subpath "/Library/Audio/Plug-Ins/Components"))
;; Preferences support
(allow user-preference-read
(preference-domain
"kCFPreferencesAnyApplication"
"com.apple.Accessibility"
"com.apple.ATS"
"com.apple.CoreGraphics"
"com.apple.DownloadAssessment"
"com.apple.HIToolbox"
"com.apple.LaunchServices"
"com.apple.MultitouchSupport" ;; FIXME: Remove when <rdar://problem/13011633> is fixed.
"com.apple.ServicesMenu.Services" ;; Needed for NSAttributedString <rdar://problem/10844321>
"com.apple.ViewBridge" ;; Needed for Input elements.
"com.apple.WebFoundation"
"com.apple.avfoundation"
"com.apple.avfoundation.frecents" ;; <rdar://problem/33137029>
"com.apple.avfoundation.videoperformancehud" ;; <rdar://problem/31594568>
"com.apple.coremedia"
"com.apple.crypto"
"com.apple.driver.AppleBluetoothMultitouch.mouse"
"com.apple.driver.AppleBluetoothMultitouch.trackpad"
"com.apple.driver.AppleHIDMouse"
"com.apple.lookup.shared"
"com.apple.mediaaccessibility" ;; Needed for custom caption styles
"com.apple.networkConnect"
"com.apple.speech.voice.prefs"
"com.apple.systemsound"
"com.apple.universalaccess"
"edu.mit.Kerberos"
"pbs" ;; Needed for NSAttributedString <rdar://problem/10844321>
))
; (Temporary) backward compatibility with non-CFPreferences readers.
(allow file-read*
(literal "/Library/Preferences/com.apple.ViewBridge.plist"))
; FIXME: This is needed for some security framework calls (that use non-CFPreferences readers)
(allow file-read-data
(literal "/Library/Preferences/com.apple.security.plist")
(home-subpath "/Library/Preferences/com.apple.security.plist"))
;; On-disk WebKit2 framework location, to account for debug installations outside of /System/Library/Frameworks,
;; and to allow issuing extensions.
(allow-read-directory-and-issue-read-extensions (param "WEBKIT2_FRAMEWORK_DIR"))
;; Allow issuing extensions to system libraries that the Network process can already read.
;; This is to avoid warnings attempting to create extensions for these resources.
(allow-read-directory-and-issue-read-extensions "/System/Library/PrivateFrameworks/WebInspectorUI.framework")
;; Sandbox extensions
(define (apply-read-and-issue-extension op path-filter)
(op file-read* path-filter)
(op file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read") path-filter)))
(define (apply-write-and-issue-extension op path-filter)
(op file-write* path-filter)
(op file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read-write") path-filter)))
(define (read-only-and-issue-extensions path-filter)
(apply-read-and-issue-extension allow path-filter))
(define (read-write-and-issue-extensions path-filter)
(apply-read-and-issue-extension allow path-filter)
(apply-write-and-issue-extension allow path-filter))
(read-only-and-issue-extensions (extension "com.apple.app-sandbox.read"))
(read-write-and-issue-extensions (extension "com.apple.app-sandbox.read-write"))
(allow mach-lookup (extension "com.apple.app-sandbox.mach")) ;; FIXME: Should be removed when <rdar://problem/13066206> is fixed.
(allow mach-lookup
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500
(with report) (with telemetry)
#endif
(global-name "com.apple.audio.AudioComponentRegistrar")
(global-name "com.apple.awdd")
(global-name "com.apple.cfprefsd.agent")
(global-name "com.apple.cookied")
(global-name "com.apple.diagnosticd")
(global-name "com.apple.iconservices")
(global-name "com.apple.iconservices.store")
(global-name "com.apple.mobileassetd")
(global-name "com.apple.powerlog.plxpclogger.xpc")
(global-name "com.apple.system.logger")
)
;; Various services required by AppKit and other frameworks
(allow mach-lookup
#if __MAC_OS_X_VERSION_MIN_REQUIRED < 101400
(global-name "com.apple.FontObjectsServer")
#endif
(global-name "com.apple.PowerManagement.control")
(global-name "com.apple.SystemConfiguration.configd")
(global-name "com.apple.analyticsd")
(global-name "com.apple.assertiond.processassertionconnection")
(global-name "com.apple.audio.SystemSoundServer-OSX")
(global-name "com.apple.audio.audiohald")
(global-name "com.apple.cfprefsd.daemon")
(global-name "com.apple.coreservices.launchservicesd")
(global-name "com.apple.fonts")
(global-name "com.apple.mediaremoted.xpc")
(global-name "com.apple.logd")
(global-name "com.apple.logd.events")
(global-name "com.apple.lsd.mapdb")
(global-name "com.apple.lskdd") ;; <rdar://problem/49123855>
(global-name "com.apple.tccd")
(global-name "com.apple.tccd.system")
(global-name "com.apple.trustd.agent")
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101400 || PLATFORM(MACCATALYST)
(global-name "com.apple.CARenderServer") ; Needed for [CAContext remoteContextWithOptions]
#else
(global-name "com.apple.windowserver.active")
#endif
)
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101400 || PLATFORM(MACCATALYST)
;; <rdar://problem/47268166>
(allow mach-lookup (xpc-service-name "com.apple.MTLCompilerService"))
#endif
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101400 || PLATFORM(MACCATALYST)
(deny mach-lookup (with no-log)
(global-name "com.apple.CoreServices.coreservicesd")
(global-name "com.apple.DiskArbitration.diskarbitrationd")
(global-name "com.apple.ViewBridgeAuxiliary")
(global-name "com.apple.windowserver.active"))
#endif
;; Needed to support encrypted media playback <rdar://problem/40038478>
(allow mach-lookup
(global-name "com.apple.SecurityServer")
(global-name "com.apple.ocspd"))
(allow file-read* file-write* (subpath "/private/var/db/mds/system")) ;; FIXME: This should be removed when <rdar://problem/9538414> is fixed.
(allow file-read*
(subpath "/private/var/db/mds")
(literal "/private/var/db/DetachedSignatures"))
(allow ipc-posix-shm-read* ipc-posix-shm-write-data ipc-posix-shm-write-create
(ipc-posix-name "com.apple.AppleDatabaseChanged"))
;; CoreFoundation. We don't import com.apple.corefoundation.sb, because it allows unnecessary access to pasteboard.
(allow mach-lookup
(global-name-regex #"^com.apple.distributed_notifications")
#if !HAVE(CSCHECKFIXDISABLE)
(global-name "com.apple.CoreServices.coreservicesd")
#endif
)
(allow file-read-data
(literal "/dev/autofs_nowait")) ; Used by CF to circumvent automount triggers
(allow ipc-posix-shm
(ipc-posix-name-regex #"^CFPBS:")) ; <rdar://problem/13757475>
(allow system-fsctl (fsctl-command (_IO "h" 47)))
;; Networking
(allow network-outbound
;; ObjC map_images needs to send logging data to syslog. <rdar://problem/39778918>
(literal "/private/var/run/syslog")
)
;; CFNetwork
(allow file-read-data (path "/private/var/db/nsurlstoraged/dafsaData.bin"))
#if PLATFORM(MAC)
;; FIXME should be removed when <rdar://problem/9347205> + related radar in Safari is fixed
(allow mach-lookup
(global-name "com.apple.system.logger")
(global-name "com.apple.system.notification_center"))
#endif
(if (defined? 'vnode-type)
(deny file-write-create (vnode-type SYMLINK)))
;; Reserve a namespace for additional protected extended attributes.
(deny file-read-xattr file-write-xattr (xattr-regex #"^com\.apple\.security\.private\."))
(deny file-read* file-write* (with no-log)
;; FIXME: Should be removed after <rdar://problem/10463881> is fixed.
(home-literal "/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2")
(home-literal "/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2-journal"))
;; Deny access needed for unnecessary NSApplication initialization.
;; FIXME: This can be removed once <rdar://problem/13011633> is fixed.
(deny file-read* (with no-log)
(subpath "/Library/InputManagers")
(home-subpath "/Library/InputManagers"))
(deny user-preference-read (with no-log)
(preference-domain "com.apple.speech.recognition.AppleSpeechRecognition.prefs"))
(deny mach-lookup (with no-log)
(global-name "com.apple.coreservices.appleevents")
(global-name "com.apple.pasteboard.1")
(global-name "com.apple.speech.recognitionserver"))
#if PLATFORM(MAC)
;; Also part of unnecessary NSApplication initialization, but we can't block access to these yet, see <rdar://problem/13869765>.
(allow file-read*
(subpath "/Library/Components")
(subpath "/Library/Keyboard Layouts")
(subpath "/Library/Input Methods")
(home-subpath "/Library/Components")
(home-subpath "/Library/Keyboard Layouts")
(home-subpath "/Library/Input Methods"))
#endif
;; Data Detectors
(allow file-read* (subpath "/private/var/db/datadetectors/sys"))
;; Allow accesses to HID
(allow iokit-open
(iokit-user-client-class "IOHIDLibUserClient"))
;; Allow accesses to LocalAuthentication and RemoteService
(allow mach-lookup
(global-name "com.apple.CoreAuthentication.agent.libxpc")
(global-name "com.apple.remoted"))