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On Thursday, 2013-11-07 at 23:20 +0100, Christian Boltz wrote:
Am Donnerstag, 7. November 2013 schrieb Carlos E. R.:
exactly are the security risks I get into by opening local
PDF files (generated by reputable sources, such as governments) with
acroread in Linux? Can they be avoided or limited with a good
I don't know about the exact security risks - maybe someone from the
security team knows more details.
With an AppArmor profile, you can make sure that acroread only reads
*.pdf files and doesn't read or modify random files on your disk. You
can also forbid networking - but this doesn't sound too useful when you
need to submit a form online ;-)
No, I don't need to submit forms online. That only works, AFAIK, on
intranets. It needs a special adobe server and probably only works on the
Windows version. I've never had the chance to try, anyway.
In fact, when I remember, I activate a firewall trick to block acroread
from communicating on internet.
Anyway, I'll attach my AppArmor profile for
acroread. It's not as tight
as it could be (and I'll probably do some changes to it now that I know
acroread won't get security updates anymore), but it's a good start.
Be warned that you will need to change it - for example I'm quite sure
your home directory is not /home/cb/ ;-)
It is a start, thanks.
Now that I think, the yast apparmour wizard has disappeared, so it is more
difficult to adjust profiles.
Note: the profile only covers the binary, not the
Which is that?
If the danger
is in the Firefox plugin, for instance, that can be
removed with less trouble.
Indeed, just zypper rm acroread-browser-plugin
I'd strongly recommend to do that (guess who split off this subpackage,
and why... ;-)
But I already removed it some hours ago.
Carlos E. R.
(from 12.3 x86_64 "Dartmouth" at Telcontar)
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