Ubuntu Security :: Why Isn't Apparmor Firefox Profile Enabled By Default
Apr 25, 2010
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?
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May 14, 2010
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.
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Apr 28, 2010
Anyone set up an Apparmor profile for Firefox?
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Nov 15, 2010
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?
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Apr 29, 2011
Since Ubuntu 9.10 I used:
"sudo apt-get install apparmor-profiles
sudo enforce firefox"
However in Lubuntu 11.04 the "sudo enforce firefox" command does no longer work. It looks like the enforce command is no longer recognised.
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Aug 9, 2011
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.
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Sep 6, 2010
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!
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Jun 18, 2011
When I enable a new AppArmor profile that is not in the kernel, I've used this command:
Code:
apparmor_parser -r /path/to/profile
But when I recently read the manual for AppArmor, it says to use this command for new profiles:
Code:
apparmor_parser -a /path/to/profile
Have I done something wrong by using -r instead of -a?
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Jun 21, 2011
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.
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Sep 3, 2010
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?
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Jan 15, 2011
Is it possible to create a selinux profile for a program like with Apparmor?
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Jun 16, 2010
How do I force Firefox to recognize a certain default firefox profile I have?
For whatever reason I can't get FF to show all of the add-ons I have. Yes, they are installed and they appear when as icons when I first boot up but after I close FF and start it again there are no icons (like Adblock).
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Aug 8, 2010
Inspite i have read through the sticky link but i have a query.
Example,
If you have your firefox under enforce mode in apparmor,are you still able to install an update / addon to it to a newer version.
If not,how to disable the apparmor in firefox.Is it as below?
Code:
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Nov 12, 2010
Tried the apparmor profile for Firefox. how to turn it off. No matter what I do, it still shows up as being on in apparmor status.
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Feb 28, 2011
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):
Feb 27 05:49:30 duron650 kernel: [ 2284.886631] type=1400 audit(1298782170.190:4: apparmor="DENIED" operation="open" parent=1782 profile="/usr/lib/firefox-3.6.13/firefox-*bin" name="/home/.ecryptfs/hugo/.Private/ECRYPTFS_FNEK_ENCRYPTED.FWY1tHLaOszg1UQTPB2f1Zq7Xu 0xztwk9hVX6-OCUaSGk2nU5ADkJx.rdk--/ECRYPTFS_FNEK_ENCRYPTED.FWY1tHLaOszg1UQTPB2f1Zq7Xu 0xztwk9hVXFlmP1qlJBZ2eq7XFiWljUE--" pid=2209 comm="firefox-bin" requested_mask="w" denied_mask="w" fsuid=1000 ouid=0
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?
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Jun 7, 2011
The default Firewall ufw is not enabled by default at the time of installation and it has to be enabled by the user.Isn't this a security risk or is the user whether ufw is enabled or not secured from external threats?I am not much knowledgeable about network security But I am trying to understand the Ubuntu mentality behind this default setting.
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Jul 29, 2011
I am using FF ver 5.0.1 from here After reading [URL] I did Code: sudo aa-logprof /path to firefox Allowed all when asked. But when I try to start FF in enforce mode I get
[Code]....
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Jun 14, 2010
Is there any setting to connect ssh server using default profile.
for example if I run
ssh user@ssh_server_ip '/bin/bash --norc --noprofile'
it will skip user's login profile(/etc/profile,/etc/bashrc,~/.bashrc,~/.bash_profile)
Can i do some settings in ssh server that deny profile skipping by client.
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Feb 2, 2014
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?
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Apr 16, 2011
Is recommended to create a profile in apparmor for applications like amule, firefox, thunderbird, amsn ....?
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Jul 28, 2010
How do I share default profile file by NIS so that I do not have to setup profile in every NIS clients?
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Jul 5, 2010
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.
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Aug 31, 2010
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?
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Jun 10, 2011
I set the profile for Firefox to enforce sudo aa-enforce firefox.Does this now apply to all users on my system or just the user I was logged in as?
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Jan 29, 2010
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.
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Oct 9, 2010
So I activated the Firefox profile:
Code:
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.
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Jun 7, 2011
I followed this thread:[URL]...When I get to this part:sudo genprof firefox it does not work in the terminal. Is this still supported for Ubuntu 11?
Also, I installed the profiles. Is something supposed to happen now or do I need to configure them?
sudo apt-get install apparmor-profiles
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Jun 12, 2011
Where is some good documentation with concrete examples on the best practices for how to update AppArmor profiles?
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Jan 23, 2010
When I use a package manager (aptitude or synaptic) to install updates to firefox (3.6), I get the following error:
[Code]...
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Sep 21, 2010
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.
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