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]
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