Messages in this thread | | | Date | Sun, 20 Jul 2014 13:06:30 +0200 | Subject | Re: ls -l /proc/1/exe -> Permission denied | From | Richard Weinberger <> |
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On Sun, Jul 20, 2014 at 12:55 PM, Andreas Schwab <schwab@linux-m68k.org> wrote: > Joakim Tjernlund <joakim.tjernlund@transmode.se> writes: > >> Andreas Schwab <schwab@linux-m68k.org> wrote on 2014/07/19 22:21:59: >>> >>> Joakim Tjernlund <joakim.tjernlund@transmode.se> writes: >>> >>> > Trying to real /proc/<pid>/exe I noticed I could not read links not >>> > belonging to my user such as: >>> > jocke > ls -l /proc/1/exe >>> > ls: cannot read symbolic link /proc/1/exe: Permission >> denied >>> > >>> > Is this expected? >>> >>> Yes. This information is considered private. >> >> I don't understand why though. > > It would allow bypassing access restrictions.
Do you have an example? I'm asking because an attacker could make any symlink as he wants to. A ln -s /etc/shadow lala still does not give me access to shadow...
-- Thanks, //richard
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