From: Evgeniy Polyakov <zbr-i6C2adt8DTjR7s880joybQ@public.gmane.org>
To: Robert Love <rlove-L7G0xEPcOZbYtjvyW6yDsg@public.gmane.org>
Cc: John McCutchan <ttb-/fF4VJJ1vBJctGpslLZhzA@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [1/1] Use pid in inotify events.
Date: Sat, 8 Nov 2008 21:40:13 +0300 [thread overview]
Message-ID: <20081108184013.GA11888@ioremap.net> (raw)
In-Reply-To: <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Sat, Nov 08, 2008 at 01:35:07PM -0500, Robert Love (rlove-L7G0xEPcOZbYtjvyW6yDsg@public.gmane.org) wrote:
> Pointing out some other information leak doesn't lessen the pid problem.
I just wanted to show that this is not a security problem.
Since there are others probably even more important.
But I really do not want to start to discuss this, since I already see
that result will be effectively zero, so returning to the original
problem with putting pid into events: if inotify_init() caller has 0
(e)uid or if IO origin has the same (e)uid, are you ok to put pid into
the event?
--
Evgeniy Polyakov
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WARNING: multiple messages have this Message-ID (diff)
From: Evgeniy Polyakov <zbr@ioremap.net>
To: Robert Love <rlove@rlove.org>
Cc: John McCutchan <ttb@tentacle.dhs.org>,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
mtk.manpages@gmail.com
Subject: Re: [1/1] Use pid in inotify events.
Date: Sat, 8 Nov 2008 21:40:13 +0300 [thread overview]
Message-ID: <20081108184013.GA11888@ioremap.net> (raw)
In-Reply-To: <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6@mail.gmail.com>
On Sat, Nov 08, 2008 at 01:35:07PM -0500, Robert Love (rlove@rlove.org) wrote:
> Pointing out some other information leak doesn't lessen the pid problem.
I just wanted to show that this is not a security problem.
Since there are others probably even more important.
But I really do not want to start to discuss this, since I already see
that result will be effectively zero, so returning to the original
problem with putting pid into events: if inotify_init() caller has 0
(e)uid or if IO origin has the same (e)uid, are you ok to put pid into
the event?
--
Evgeniy Polyakov
next parent reply other threads:[~2008-11-08 18:40 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6@mail.gmail.com>
[not found] ` <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 18:40 ` Evgeniy Polyakov [this message]
2008-11-08 18:40 ` [1/1] Use pid in inotify events Evgeniy Polyakov
[not found] ` <20081108184013.GA11888-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 22:03 ` Evgeniy Polyakov
2008-11-08 22:03 ` Evgeniy Polyakov
2008-11-10 15:13 ` [take 2] " Evgeniy Polyakov
2008-11-10 15:13 ` Evgeniy Polyakov
2008-11-16 23:24 ` [take 3] " Evgeniy Polyakov
2008-11-16 23:24 ` Evgeniy Polyakov
[not found] ` <20081116232450.GA13547-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-17 16:59 ` Michael Kerrisk
2008-11-17 16:59 ` Michael Kerrisk
[not found] ` <cfd18e0f0811170859w1d3f903ej1d5626f2d2bf4496-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-17 17:15 ` Evgeniy Polyakov
2008-11-17 17:15 ` Evgeniy Polyakov
[not found] ` <20081117171508.GA564-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-17 17:23 ` Michael Kerrisk
2008-11-17 17:23 ` Michael Kerrisk
[not found] ` <cfd18e0f0811170923q6b72bd0fn9d319bbceb8fa6a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-17 17:52 ` Evgeniy Polyakov
2008-11-17 17:52 ` Evgeniy Polyakov
[not found] ` <20081117175212.GA2224-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-20 13:09 ` Pavel Machek
2008-11-20 13:09 ` Pavel Machek
[not found] ` <20081120130902.GA1408-+ZI9xUNit7I@public.gmane.org>
2008-11-21 14:03 ` Evgeniy Polyakov
2008-11-21 14:03 ` Evgeniy Polyakov
[not found] ` <20081121140325.GA12384-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-21 14:20 ` Michael Kerrisk
2008-11-21 14:20 ` Michael Kerrisk
[not found] ` <517f3f820811210620o34307610hf926bbe3b3828e8c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-21 14:37 ` Evgeniy Polyakov
2008-11-21 14:37 ` Evgeniy Polyakov
2008-11-21 14:30 ` Robert Love
2008-11-21 14:30 ` Robert Love
[not found] ` <acdcfe7e0811210630s65404ef5pf2b94731c2a872e1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-21 14:53 ` Evgeniy Polyakov
2008-11-21 14:53 ` Evgeniy Polyakov
2008-11-21 14:57 ` Pavel Machek
2008-11-21 14:57 ` Pavel Machek
[not found] ` <20081121145709.GC1554-+ZI9xUNit7I@public.gmane.org>
2008-11-21 15:08 ` Evgeniy Polyakov
2008-11-21 15:08 ` Evgeniy Polyakov
2008-11-18 13:19 ` Christoph Hellwig
2008-11-18 13:19 ` Christoph Hellwig
[not found] ` <20081118131937.GC16944-jcswGhMUV9g@public.gmane.org>
2008-11-19 14:05 ` Evgeniy Polyakov
2008-11-19 14:05 ` Evgeniy Polyakov
[not found] ` <cfd18e0f0811190634g276b4a2dm5b3d5de25a5c9222@mail.gmail.com>
[not found] ` <cfd18e0f0811190634g276b4a2dm5b3d5de25a5c9222-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-19 14:43 ` Michael Kerrisk
2008-11-19 14:43 ` Michael Kerrisk
2008-11-20 19:17 ` Ville Syrjälä
2008-11-19 14:53 ` Evgeniy Polyakov
2008-11-19 14:53 ` Evgeniy Polyakov
[not found] ` <20081119145351.GA2652-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-20 22:34 ` John McCutchan
2008-11-20 22:34 ` John McCutchan
[not found] ` <cfec22b10811201434v2230d11dvc9797018e433fd20-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-20 23:06 ` Evgeniy Polyakov
2008-11-20 23:06 ` Evgeniy Polyakov
[not found] ` <20081120230612.GB6536-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-21 18:39 ` Arnd Bergmann
2008-11-21 18:39 ` Arnd Bergmann
2008-11-22 7:12 ` David Newall
[not found] ` <4927B0D5.4020907-KzQzY1MbaKjAHznzqCTclw@public.gmane.org>
2008-11-22 9:41 ` Evgeniy Polyakov
2008-11-22 9:41 ` Evgeniy Polyakov
[not found] ` <20081122094144.GB12543-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-22 11:41 ` David Newall
2008-11-22 11:41 ` David Newall
[not found] ` <200811211939.46812.arnd-r2nGTMty4D4@public.gmane.org>
2008-11-22 9:37 ` Evgeniy Polyakov
2008-11-22 9:37 ` Evgeniy Polyakov
[not found] ` <20081122093749.GA12543-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-24 5:08 ` John McCutchan
2008-11-24 5:08 ` John McCutchan
[not found] ` <cfec22b10811232108u3ade8b66w58999054c03549fc-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-24 7:30 ` Evgeniy Polyakov
2008-11-24 7:30 ` Evgeniy Polyakov
2008-11-08 11:42 [1/1] " Evgeniy Polyakov
[not found] ` <20081108114225.GA22674-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 14:25 ` Michael Kerrisk
2008-11-08 14:25 ` Michael Kerrisk
[not found] ` <cfd18e0f0811080625w5b285cc0p2410e8d187b025c7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 15:35 ` Evgeniy Polyakov
2008-11-08 15:35 ` Evgeniy Polyakov
[not found] ` <20081108153545.GA3859-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 16:58 ` Michael Kerrisk
2008-11-08 16:58 ` Michael Kerrisk
[not found] ` <cfd18e0f0811080858k7f6cddadg962771ed0cb3bdb8-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 17:04 ` Robert Love
2008-11-08 17:04 ` Robert Love
[not found] ` <acdcfe7e0811080904y7eb461d3n70b0765d8b1e9011-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 17:27 ` Evgeniy Polyakov
2008-11-08 17:27 ` Evgeniy Polyakov
2008-11-10 15:20 ` Evgeniy Polyakov
2008-11-10 15:20 ` Evgeniy Polyakov
[not found] ` <20081110152043.GB15796-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-10 17:15 ` Michael Kerrisk
2008-11-10 17:15 ` Michael Kerrisk
[not found] ` <cfd18e0f0811100915o8ea98a0s816921cee3163c1c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-10 17:20 ` Evgeniy Polyakov
2008-11-10 17:20 ` Evgeniy Polyakov
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