From: Timothy Miller <miller@techsource.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Fredrik Tolf <fredrik@dolda2000.cjb.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: PTY DOS vulnerability?
Date: Tue, 01 Jul 2003 09:41:14 -0400 [thread overview]
Message-ID: <3F018F7A.3050301@techsource.com> (raw)
In-Reply-To: 1057008994.17589.40.camel@dhcp22.swansea.linux.org.uk
How about giving each user his own set of virtual ptys?
Alan Cox wrote:
> On Llu, 2003-06-30 at 22:31, Fredrik Tolf wrote:
>
>>That is true, though, of course. Stupid me not to think about
>>that. However, that means that an administrator who could find
>>himself being under such an attack might not think about it
>>either. Also, from the outside, the ssh client just does
>>nothing, making it look as if the server is unresponsive. Of
>>course, the exact error is logged to the server's syslog, but if
>>you can't view it, then you won't know about it.
>>
>>So all in all, do you think I should implement a per-user
>>resource limit on PTYs?
>
>
> There are a whole collection of things that would benefit from that kind
> of management - go for it but make it possible to add other stuff too
>
> -
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next prev parent reply other threads:[~2003-07-01 13:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-30 14:18 PTY DOS vulnerability? Fredrik Tolf
2003-06-30 17:55 ` Alan Cox
2003-06-30 21:31 ` Fredrik Tolf
2003-06-30 21:36 ` Alan Cox
2003-07-01 12:15 ` Jesse Pollard
2003-07-01 13:41 ` Timothy Miller [this message]
2003-07-01 6:22 ` Oleg Drokin
2003-07-01 11:57 ` Jesse Pollard
2003-07-01 19:53 ` Helge Hafting
2003-07-02 6:42 ` Paul Rolland
2003-07-03 1:14 ` Jesse Pollard
2003-07-03 1:52 ` H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2003-07-08 23:11 Clayton Weaver
2003-07-09 10:08 ` Svein Ove Aas
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