From: "H. Peter Anvin" <hpa@zytor.com>
To: Eric Paris <eparis@parisplace.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Marcus Meissner <meissner@suse.de>,
linux-kernel@vger.kernel.org, tj@kernel.org,
akpm@linux-foundation.org, w@1wt.eu, alan@lxorguk.ukuu.org.uk,
serue@us.ibm.com,
LSM List <linux-security-module@vger.kernel.org>,
James Morris <jmorris@namei.org>
Subject: Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking
Date: Mon, 29 Nov 2010 11:38:22 -0800 [thread overview]
Message-ID: <4CF4012E.3040901@zytor.com> (raw)
In-Reply-To: <AANLkTinQHidwuZLqjjdyxyT-UAVao4XngNsz3tFUPN8M@mail.gmail.com>
On 11/29/2010 11:21 AM, Eric Paris wrote:
>>
>> Delegating CAP_SYS_ADMIN, of course, otherwise known as "everything", is
>> worse than anything...
>
> Serge just proposed a new CAP_SYSLOG
>
> http://lwn.net/Articles/378472/
>
> Which could probably still be renamed and used to cover this access as well....
>
Quite frankly, the Linux capability system is largely a mess, with big
bundled capacities that don't make much sense and are hideously
inconvenient with the capability system used in user space (groups).
For things like this that genuinely has a file node, *let's use it* and
allow permissions to be controlled by the file node!
-hpa
next prev parent reply other threads:[~2010-11-29 19:39 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-16 10:46 [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking Marcus Meissner
2010-11-17 5:07 ` Kyle McMartin
2010-11-18 7:48 ` Ingo Molnar
2010-11-20 3:18 ` Kees Cook
2010-11-26 7:51 ` Ingo Molnar
2010-11-17 5:40 ` Kyle Moffett
2010-11-17 5:41 ` Kyle Moffett
2010-11-17 5:58 ` Linus Torvalds
2010-11-17 6:19 ` Willy Tarreau
2010-11-18 7:31 ` Ingo Molnar
2010-11-23 17:24 ` Pavel Machek
2010-11-26 7:38 ` Ingo Molnar
2010-11-29 19:03 ` H. Peter Anvin
2010-11-20 11:32 ` Avi Kivity
2010-11-19 19:19 ` Sarah Sharp
2010-11-19 19:54 ` Linus Torvalds
2010-11-19 19:58 ` david
2010-11-19 20:04 ` Linus Torvalds
2010-11-19 20:16 ` Willy Tarreau
2010-11-19 20:55 ` david
2010-11-26 7:48 ` Ingo Molnar
2010-11-29 16:33 ` Sarah Sharp
2010-11-29 18:04 ` Ingo Molnar
2010-11-29 19:05 ` H. Peter Anvin
2010-11-29 19:21 ` Eric Paris
2010-11-29 19:38 ` H. Peter Anvin [this message]
2010-11-29 21:49 ` Willy Tarreau
2010-11-29 23:31 ` Alan Cox
2010-11-30 11:58 ` Ingo Molnar
2010-11-20 11:05 ` Richard W.M. Jones
-- strict thread matches above, loose matches on Subject: below --
2010-11-19 21:12 Andy Walls
2010-11-19 23:22 ` Linus Torvalds
2010-11-20 2:40 ` Kees Cook
2010-11-20 19:47 ` Henrique de Moraes Holschuh
2010-11-29 22:58 ` Kevin Easton
2010-11-04 10:09 Marcus Meissner
2010-11-04 10:11 ` Tejun Heo
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
2010-11-07 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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