Assetcachelocatorservice.xpc Little Snitch

The traffic of some Apple processes isn’t shown in Little Snitch 5

Assetcachelocatorservice.xpc Little Snitch. Jul 06, 2016 Looks like no one’s replied in a while. To start the conversation again, simply ask a new question. External Soundcard Traktor Pro 2. I would use my laptop with traktor and a basic controller. Buying a simple USB soundcard helps immensely with cueing. Assetcachelocatorservice.xpc Little Snitch Book A firewall protects your computer against unwanted guests from the Internet. But who protects your private data from being sent out?

This is due to a limitation in Apple’s Network Extension API, which surprisingly whitelists a number of system services like Maps, FaceTime, App Store or Software Update and therefore doesn’t report the network activity of these services to third-party application firewalls.

EtreCheck 4.01.% (App Store) com.apple.WebKit.WebContent (14) 1.37.% (Apple) Little Snitch Agent 0.47.% (Objective Development Software GmbH) Google Chrome 0.32.% (Google, Inc.) Top Processes Snapshot by Memory: Process (count) RAM usage (Source - Location) EtreCheck 706.MB (App Store) Google Chrome 304.MB (Google, Inc.) Google Chrome Helper. Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time. Codice: Seleziona tutto Timestamp (2): Sat Apr 04 20: DetectX Swift v1.093 macOS: Version 10.15.4 (Build 19E266) File System: apfs Temp: The thermal state is within normal limits.

The use of this new API is now mandatory for third-party developers on macOS Big Sur, because Apple no longer supports the previous kernel extension based approach, which didn’t suffer from this limitation.

We’ve been investigating a solution in Little Snitch to make these whitelisted connections visible by means of alternative techniques. This solution is already available in our latest nightly build of Little Snitch 5.1.

There’s an ongoing discussion about this problem in various online media, and we assume that Apple will address these concerns in a future macOS update. See our blog article to learn more about this topic.

UPDATE: This issue has been resolved in macOS Big Sur 11.2. Apple has removed this whitelist completely, allowing third-party firewalls like Little Snitch to reliably monitor and filter any network traffic.

Up until macOS 11.1 the whitelist inlcudes the following macOS processes:

/System/Applications/App Store.app/Contents/MacOS/App Store
/System/Library/CoreServices/cloudpaird
/System/Library/CoreServices/mapspushd
/System/Library/CoreServices/Software Update.app/Contents/Resources/softwareupdated
/System/Library/Frameworks/Accounts.framework/Versions/A/Support/accountsd
/System/Library/Frameworks/CoreTelephony.framework/Support/CommCenter
/System/Library/PrivateFrameworks/ApplePushService.framework/apsd
/System/Library/PrivateFrameworks/AppStoreDaemon.framework/Support/appstoreagent
/System/Library/PrivateFrameworks/AppStoreDaemon.framework/Support/appstored
/System/Library/PrivateFrameworks/AssetCacheServices.framework/Versions/A/XPCServices/AssetCacheLocatorService.xpc/Contents/MacOS/AssetCacheLocatorService
/System/Library/PrivateFrameworks/AssistantServices.framework/Versions/A/Support/assistantd
/System/Library/PrivateFrameworks/AuthKit.framework/Versions/A/Support/akd
/System/Library/PrivateFrameworks/CloudKitDaemon.framework/Support/cloudd
/System/Library/PrivateFrameworks/CommerceKit.framework/Resources/commerced
/System/Library/PrivateFrameworks/CommerceKit.framework/Versions/A/Resources/commerce
/System/Library/PrivateFrameworks/CoreLSKD.framework/Versions/A/lskdd
/System/Library/PrivateFrameworks/CoreParsec.framework/parsecd
/System/Library/PrivateFrameworks/CoreSpeech.framework/corespeechd
/System/Library/PrivateFrameworks/DistributedEvaluation.framework/Versions/A/XPCServices/com.apple.siri-distributed-evaluation.xpc/Contents/MacOS/com.apple.siri-distributed-evaluation
/System/Library/PrivateFrameworks/FamilyCircle.framework/Versions/A/Resources/familycircled
/System/Library/PrivateFrameworks/FamilyNotification.framework/FamilyNotification
/System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
/System/Library/PrivateFrameworks/HomeKitDaemon.framework/Support/homed
/System/Library/PrivateFrameworks/IDS.framework/identityservicesd.app/Contents/MacOS/identityservicesd
/System/Library/PrivateFrameworks/IDSFoundation.framework/IDSRemoteURLConnectionAgent.app/Contents/MacOS/IDSRemoteURLConnectionAgent
/System/Library/PrivateFrameworks/IMCore.framework/imagent.app/Contents/MacOS/imagent
/System/Library/PrivateFrameworks/IMFoundation.framework/XPCServices/IMRemoteURLConnectionAgent.xpc/Contents/MacOS/IMRemoteURLConnectionAgent
/System/Library/PrivateFrameworks/IMTransferServices.framework/IMTransferAgent.app/Contents/MacOS/IMTransferAgent
/System/Library/PrivateFrameworks/MapsSuggestions.framework/MapsSuggestions
/System/Library/PrivateFrameworks/MapsSupport.framework/MapsSupport
/System/Library/PrivateFrameworks/MediaStream.framework/MediaStream
/System/Library/PrivateFrameworks/MusicLibrary.framework/MusicLibrary
/System/Library/PrivateFrameworks/PassKitCore.framework/passd
/System/Library/PrivateFrameworks/ProtectedCloudStorage.framework/Helpers/ProtectedCloudKeySyncing
/System/Library/PrivateFrameworks/SyncedDefaults.framework/Support/syncdefaultsd
/System/Library/TextInput/kbd
/usr/libexec/coreduetd
/usr/libexec/diagnosticd
/usr/libexec/findmydeviced
/usr/libexec/fmfd
/usr/libexec/locationd
/usr/libexec/mdmclient
/usr/libexec/mobileactivationd
/usr/libexec/mobileassetd
/usr/libexec/networkserviceproxy
/usr/libexec/rtcreportingd
/usr/libexec/secd
/usr/libexec/siriknowledged
/usr/libexec/swcd
/usr/libexec/tailspind
/usr/libexec/teslad
/usr/libexec/timed
/usr/libexec/trustd
/usr/sbin/securityd
com.apple.facetime

tinyapps.org / blog

Patrick Wardle highlighted a tweet by Maxwell ('Some Apple apps bypass some network extensions and VPN Apps. Maps for example can directly access the internet bypassing any NEFilterDataProvider or NEAppProxyProviders you have running'), sparking an extensive HN discussion on Apple's ham-fisted tactics (not unlike Google's recent behavior).

A search for 'NEFilterDataProvider' turned up David Dudok de Wit's post fingering the ContentFilterExclusionList key in /System/Library/Frameworks/NetworkExtension.framework/Versions/A/Resources/Info.plist as the culprit. The default list includes 56 Apple apps and daemons like App Store, MusicLibrary, softwareupdated, etc.:

<li><p>Disable FileVault</p></li><li><p>Boot into macOS Recovery, disable SIP (<code>csrutil disable</code>) and SSV (<code>csrutil authenticated-root disable</code>), and reboot</p></li><li><p>Find the root mount device, e.g.,<br /><samp>%</samp><code>mount</code><br /><samp>/dev/<span>disk1s5</span>s1 on / (apfs, local, read-only, journaled)<br />...</samp></p></li><li><p><samp>%</samp><code>mkdir <span>mnt</span></code></p></li><li><p><samp>%</samp><code>sudo mount -o nobrowse -t apfs /dev/<span>disk1s5</span><span>mnt</span>/</code></p></li><li><p>Edit Info.plist as desired, e.g., <samp>%</samp><code>sudo vi mnt/System/Library/Frameworks/NetworkExtension.framework/Versions/A/Resources/Info.plist</code></p></li><li><p><samp>%</samp><code>sudo bless --folder mnt/System/Library/CoreServices --bootefi --create-snapshot && sudo reboot</code></p></li></ol><p>Little Snitch 5 and TripMode 3 had no problem blocking the previously-cloaked processes afterwards:</p><p>though one may well be left with a niggling doubt: should all this really be necessary to monitor your own computer's network traffic?</p><p><small><b>UPDATE 1:</b></small> Hany, author of Murus and Vallum, was kind enough to reply with some testing of his own:</p><blockquote><i>I did some tests and I’ve found at least one major issue on Catalina.<br />Removing all entries from the dictionary key seems to work for most listed processes: connections are seen by the network filter and flows are passed/blocked according to matched rules. But it does not work for at least one of the listed processes: IMTransferAgent.If you use macOS Messages.app then you may be aware that this process is used to send messages attachments.<br />If removed from the list, the process is always blocked. The filter provider does not see any flow for that process, and any attempt to send attachments with Messages.app will fail until you disable the filter.</i></blockquote><p><small><b>UPDATE 2:</b></small>The traffic of some Apple processes isn’t shown in Little Snitch 5.</p><img src='https://debtrenew660.weebly.com/uploads/1/2/5/7/125716068/917867432.jpg' alt='Assetcachelocatorservice.xpc Little Snitch' title='Assetcachelocatorservice.xpc Little Snitch' /><p><small><b>UPDATE 3:</b></small>Enabling Little Snitch 4.6 kext under Big Sur</p><p><small><b>UPDATE 4:</b></small>Tweet by Apple developer Russ Bishop: '<i>Some system processes bypassing NetworkExtensions in macOS is a bug, in case you were wondering.</i>' and some replies:</p><h2>Assetcachelocatorservice.xpc Little Snitch Co</h2><ul><li>Matt Greenfield: '<i>Public bug tracker would make it easier to believe too. Lack of transparency breeds lack of trust.</i>'</li><li>David Dudok de Wit: '<i>Glad to see it's being reconsidered as a bug, because Apple told us it 'behaves as designed' (FB7740671 + FB7665551). And why is there an exclusion list in the first place? I'd love to know more and see this documented.</i>'</li><li>Sérgio Silva: '<i>Yes. A bug with its own configuration file /System/Library/Frameworks/NetworkExtension.framework/Resources/Info.plist ContentFilterExclusionList</i>'</li></ul><p><small><b>UPDATE 5:</b></small>Exclusions Blaster</p><p><small><b>UPDATE 6:</b></small>Hooray, no more ContentFilterExclusionList</p><h2>Assetcachelocatorservice.xpc Little Snitch Online</h2><p align='right'>/mac | Oct 21, 2020</p><p>Subscribe or visit the archives.</p></p>
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