From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ingo Molnar <mingo@elte.hu>
Cc: Willy Tarreau <w@1wt.eu>, Marcus Meissner <meissner@suse.de>,
security@kernel.org, mort@sgi.com,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
fweisbec@gmail.com, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org, jason.wessel@windriver.com,
tj@kernel.org, Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking
Date: Sun, 7 Nov 2010 15:27:20 +0000 [thread overview]
Message-ID: <20101107152720.7e2c472e@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20101107123232.GB6512@elte.hu>
> This makes it _unsafe_ (for many types of attackers) to run an exploit locally.
They don't care.
Firstly it 's trivial to identify the true kernel version from all sorts
of other methods and secondly almost all exploiting is done by robots
running from box to box and which are completely disposable.
They simply *don't* care and if they do the rpm -q, tcp finger prints and
a few other tricks such as clock timing a couple of syscalls will answer
the question reliably anyway.
next prev parent reply other threads:[~2010-11-07 15:31 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 10:09 Marcus Meissner
2010-11-04 10:11 ` Tejun Heo
2010-11-05 0:11 ` [Security] " Eugene Teo
2010-11-04 11:46 ` Ingo Molnar
2010-11-04 12:29 ` Marcus Meissner
2010-11-04 13:58 ` Ingo Molnar
2010-11-04 14:11 ` Ingo Molnar
2010-11-04 14:33 ` Marcus Meissner
2010-11-04 14:38 ` Tejun Heo
2010-11-04 14:43 ` H. Peter Anvin
2010-11-04 14:48 ` Tejun Heo
2010-11-04 19:08 ` Ingo Molnar
2010-11-04 21:29 ` [Security] " Willy Tarreau
2010-11-04 21:51 ` Ingo Molnar
2010-11-04 22:35 ` Willy Tarreau
2010-11-04 23:46 ` Willy Tarreau
2010-11-07 8:50 ` Ingo Molnar
2010-11-07 9:08 ` Ingo Molnar
2010-11-07 9:49 ` Willy Tarreau
2010-11-07 11:27 ` Ingo Molnar
2010-11-07 11:41 ` Willy Tarreau
2010-11-07 11:47 ` Ingo Molnar
2010-11-07 11:56 ` Willy Tarreau
2010-11-07 12:12 ` Ingo Molnar
2010-11-07 12:22 ` Willy Tarreau
2010-11-07 12:25 ` Ingo Molnar
2010-11-07 12:39 ` Willy Tarreau
2010-11-07 12:32 ` Ingo Molnar
2010-11-07 12:51 ` Willy Tarreau
2010-11-07 15:27 ` Alan Cox [this message]
2010-11-08 6:29 ` Ingo Molnar
2010-11-07 11:42 ` Ingo Molnar
2010-11-07 11:51 ` Willy Tarreau
2010-11-07 12:37 ` Ingo Molnar
2010-11-07 12:55 ` Willy Tarreau
2010-11-07 8:56 ` Ingo Molnar
2010-11-07 9:03 ` Ingo Molnar
[not found] ` <20101104215157.GA25128@ <20101107090805.GA27983@elte.hu>
2010-11-13 13:06 ` Gilles Espinasse
2010-11-07 18:02 ` Andi Kleen
2010-11-07 18:32 ` H. Peter Anvin
2010-11-10 8:53 ` Ingo Molnar
2010-11-11 2:51 ` H. Peter Anvin
2010-11-11 7:05 ` Ingo Molnar
2010-11-05 2:38 ` Frank Rowand
2010-11-10 20:58 ` Jesper Juhl
2010-11-05 0:20 ` Jesper Juhl
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