From: Lennart Poettering <mzxreary@0pointer.de>
To: linux-kernel@vger.kernel.org
Subject: Can access to /proc/$PID/exe be relaxed?
Date: Tue, 21 Jul 2009 18:52:48 +0200 [thread overview]
Message-ID: <20090721165248.GA27549@tango.0pointer.de> (raw)
Hi!
Unless I am mistaken a process currently needs CAP_SYS_PTRACE to read
/proc/$PID/exe for abritrary processes. Does that make sense? Could
that be relaxed? Is there any reason to limit access to that link at
all? To me the data from /proc/$PID/cmdline seems to be far more
worthy to be protected than /proc/$PID/exe, or am I missing something?
Tbh, looking at the code I don't really get where CAP_SYS_PTRACE seems
to be required, but experimenting from userspace this seems to be the
case.
Lennart
--
Lennart Poettering Red Hat, Inc.
lennart [at] poettering [dot] net
http://0pointer.net/lennart/ GnuPG 0x1A015CC4
next reply other threads:[~2009-07-21 16:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-21 16:52 Lennart Poettering [this message]
2009-07-21 17:06 ` Can access to /proc/$PID/exe be relaxed? Denys Vlasenko
2009-07-21 17:17 ` Lennart Poettering
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