From: Peter Cordes <peter@cordes.ca>
To: Karel Zak <kzak@redhat.com>
Cc: halfdog <me@halfdog.net>, util-linux@vger.kernel.org
Subject: Re: util-linux mount/unmount ASLR bypass via environment variable
Date: Fri, 12 Jan 2018 07:50:00 -0400 [thread overview]
Message-ID: <20180112115000.GF29852@cordes.ca> (raw)
In-Reply-To: <20180112101559.rm2k4qbhi7kyufma@ws.net.home>
On Fri, Jan 12, 2018 at 11:15:59AM +0100, Karel Zak wrote:
> Good point. Fixed, now for SUIDs it's without the addresses:
>
> $ LIBMOUNT_DEBUG=all mount
> 18622: libmount: CXT: ----> allocate [RESTRICTED]
> 18622: libmount: TAB: alloc
> ...
Would it be useful to warn that addresses are being hidden? People
might not realize they're missing out on that when debugging.
Especially relevant if the addresses are useful for bug reports,
rather than just for use with a local debugger or something.
(In that case people probably run sudo gdb mount rather than attaching
to a running SUID mount process.)
--
#define X(x,y) x##y
Peter Cordes ; e-mail: X(peter@cor , des.ca)
"The gods confound the man who first found out how to distinguish the hours!
Confound him, too, who in this place set up a sundial, to cut and hack
my day so wretchedly into small pieces!" -- Plautus, 200 BC
next prev parent reply other threads:[~2018-01-12 11:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-11 18:51 util-linux mount/unmount ASLR bypass via environment variable halfdog
2018-01-12 10:15 ` Karel Zak
2018-01-12 11:50 ` Peter Cordes [this message]
2018-01-12 12:47 ` Karel Zak
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