From: Patrick McHardy <kaber@trash.net>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: Denys Fedoryshchenko <denys@visp.net.lb>,
Krzysztof Oledzki <olel@ans.pl>,
netdev@vger.kernel.org
Subject: Re: DoS by cat /proc/net/ip_conntrack ?
Date: Sat, 08 Mar 2008 16:18:30 +0100 [thread overview]
Message-ID: <47D2AE46.1010406@trash.net> (raw)
In-Reply-To: <20080308144426.GB3378@ami.dom.local>
Jarek Poplawski wrote:
> On Sat, Mar 08, 2008 at 04:24:34PM +0200, Denys Fedoryshchenko wrote:
>
>> For me personally, i think must be as a rule, that _READING_ must not hang
>> whole system by consuming all resources (router becoming completely
>> unreachable and blocking all traffic passing thru it). It can hang console,
>> current program, but not crash router.
>>
>
> IMHO you're right, and it's a bug. Only calling this DOS isn't probably
> very right if only root can do this, but maybe I'm wrong.
>
Starting with current -git we don't take the conntrack
lock for /proc anymore, so it should behave better now.
prev parent reply other threads:[~2008-03-08 15:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-06 13:43 DoS by cat /proc/net/ip_conntrack ? Denys Fedoryshchenko
2008-03-06 13:51 ` Krzysztof Oledzki
2008-03-08 12:26 ` Jarek Poplawski
2008-03-08 12:33 ` Jarek Poplawski
2008-03-08 14:24 ` Denys Fedoryshchenko
2008-03-08 14:44 ` Jarek Poplawski
2008-03-08 15:18 ` Patrick McHardy [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=47D2AE46.1010406@trash.net \
--to=kaber@trash.net \
--cc=denys@visp.net.lb \
--cc=jarkao2@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=olel@ans.pl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.