I'm a Windows user, but now trying to migrate to Ubuntu. I have read AppArmor Docs/FAQs, and very impressed with it's possibilities. But I'm still not sure, can I have a profile which is applied to all applications I run (not listed in other profiles)? That would be great to have a "Simple Application" default profile, with permissions, say, to read/write to app's folder and to display graphics/play sounds!
I've read and re-read everything I can find about AppArmor, to no avail. On the whole, AppArmor isn't for me. However, rather than give up on it completely, I have an idea: create a profile that I could use as a template for any untrusted application, with the aim of 1) blocking it from network access and 2) blocking it from installing other applications. I've got as far as creating an empty profile:
Code: # Generic AppArmor Profile for UntrustedApplication #include <tunables/global> /usr/sbin/UntrustedApplication { #include <abstractions/base> } What do I need to add to make this profile 100% permissive, except for the two exceptions stated above?
This page [URL] shows how to enable apparmor firefox profile. Why isnt apparmor firefox profile enabled by default? I would postulate that this would be because there must be some limitation by having the profile enabled. If so, what would the limitation be?
But I couldn't find a modified version of it for Swiftfox anywhere, so I decided to modify it myself. But I'm not 100% sure that I did it correctly, so I thought I'd ask here.
Also, will Swiftfox 3.6.4 be able to use this same profile? I thought it might not because of the new "Out of process plugins" feature being added.
I'm trying to understand the Apparmor and would like to get FF profile from Bodhi.zazen [thank you],but I'm kinda new to Linux.Did lots of reading but missing one thing:
1.where is FF profile? I can't see any usr.lib.firefox-3.6.12 2. how do I do copy FF profile from Bodhi.zazen?
i was trying to edit my firefox apparmor profile. I used aa-genprof, and accidentally closed the terminal before the program was finished. Firefox wouldn't load properly after that whenever it was enforced. I uninstalled and reinstalled the profiles, but it didn't help.Finally I deleted the files for the profile itself ... now it will not reinstall them..I marked all the apparmor packages for complete removal and then reinstalled them but it will not put the original firefox profile back in.
I have quiet splash disabled so I can see what boot processes are run on startup, and I notice that on every time I boot my computer the Firefox profile is skipped. Here's the message: Code: Skipping profile in /etc/ apparmor.d/disable: usr.bin.firefox,I checked /etc/apparmor.d/disable, and see that there is indeed a link to usr.bin.firefox. So I'm wondering how/why it got there. I haven't touched anything in AppArmor since my clean install of Natty.
I'm trying to figure out Apparmor,in doing so I've seen that there are no pre-configured profiles for Iceweasel,but there are two for Firefox in /usr/share/doc/apparmor-profiles/extras/ : Will it work if I simply replace "iceweasel" for "firefox" and set those profiles to complain mode,just to see what will eventually happen? Is that too obvious?
I am new to linux but will try and be as precise as I can. I have a Dell Insp. 1545 with 3GB ram with 10.04_64
Problem: Rather out of the blue upon login, from the time of entering password to the desktop, is MUCH slower. I have no splash enabled and there is some reference to AppArmour profiles (it sits there at this apparmour reference , then sits trying to load desktop). However, I have never configured apparmor. Finally, on last login, there was some sort of screen corruption prior to getting to desktop.
Prior to all this i noticed that firefox "blinked" when I was using it, and then said that it needed to shutdown/restart for updates. I did notice at that time two of my previous tabs sortof acted oddly (moved around then disappeared).
I have no SSH/Server software etc activated.
I did change visudo so that sudo timeout shorter than it was. However that is the only modification to the system recently.
Or do you just use Ubuntu feeling safe enough without them? If you do use AppArmor and other security measures, what do you use them for? Obviously Firefox and Chrome would be two things. But what else?
Does anyone know if Apparmor will work on the Ubuntu 10.04 livecd? I know there are currently issues running Apparmor on stacked filesystems with aufs. Currently a casper scripts disables Apparmor during boot up. Would be very useful if it could be run in a live session.
And restarted Firefox (even rebooted), but it doesn't seem to be working. When I open Firefox I am able to perform a "Save Page As" in locations I shouldn't be able to, like my Desktop or Pictures folder.
The following command says the Firefox process is in enforce mode:
Code:
Of the following lines, the only directory which is "rw" is /Downloads, why am I still able to write to other places?
Code:
OS: Ubuntu 10.10
Can someone with an active Firefox profile do this simple test for me? Click File -> Save As and try to save somewhere the Apparmor profile shouldn't let you, and let me know the results.
I am trying to use apparmor to restrict my file browser, which is Thunar to only let me view the files that are in the home directory and also removable media.I tried following the apparmor sticky with no success.I created the profile and tried editing it and it either started and let me do pretty much everything or did not start at all. Would it be possible for someone to help me step by step to set up a profile for thunar that would only show the home directory and removable media.
It seems that AppArmor can't be effectively used to protect read access to files from users (including roots). It is possible to create a profile for, eg, 'cat', but then the users can use 'less'.Is this true? Should use SELinux instead for this?
I have a program that generates large amounts of apparmor log messages. I'm happy to enforce restrictions on the program but I really don't want it to fill my log with messages every time it attempts to read a file.
Is there a way to let it enforce restrictions but not log denials?
I use Ubuntu 10.10 with encrypted home. I'm new with apparmor. My firefox-3.6.13 is now in enforce mode - with standard profile. With this profile it should have write access only to: owner @{HOME}/Downloads/* rw,
But I can save files (with standard downloadmanager of firefox) e.g. in $HOME itself and I can't find any other rule, which could allow that. I have thing, that ecryptfs workaround just affects the eCryptFS "part of things" and limitations of normal filenames/paths (in mounted ecryptfs) are still possible. Why can firefox write elsewhere as in to ${HOME}/Downloads? I get also this in kern.log (but not by saving a file as wrote above):
Why do firefox try to write to it and why do it fail even with #13 workaround? Feb 27 06:03:23 duron650 kernel: [ 3118.231818] type=1400 audit(1298783003.534:49): apparmor="DENIED" operation="open" parent=1782 profile="/usr/lib/firefox-3.6.13/firefox-*bin" name="/tmp/.X0-lock" pid=2304 comm="firefox-bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 Why try firefox to access X lock?
Perhaps it is my misinterpretation of AppArmor, how can it be configured to restrict TCP or UDP traffic to/from specific ports?
The profile "abstractions/nameservice", under the section "# TCP/UDP network access", doesn't seem to lock the application to port 53. What am I missing? Restriction to specific ports is something that systrace can do so I'd expect nothing less from AppArmor.
We have a stripped down version of Ubuntu 10.04 with no menu options for security. On the admin profile we have set up a terminal window for editing or adding users.We have created a second user with no admin privileges which we want to make the default on start up. This account is set to auto-login and takes them to a generic screen with just one icon to select and do anything with. I need to make this user the default on start up instead of the admin account as we do not want users knowing there is anything else available.When using the $ :users-admin in the terminal window to build the other account I have no option to make one or the other default. Is this done from the command line or is there another way of making this happen?
