Re: PTY DOS vulnerability?

[H. Peter Anvin]

Followup to:  <03070220143600.04348@tabby>
By author:    Jesse Pollard <[e-mail]>
In newsgroup: linux.dev.kernel
> >
> > Isn't this something a improved sshd could do?  I.e. if the
> > connection using up the last (or one of the last) pty's logs
> > in as non-root - just kill it.
> 
> and how is it to determine that it is the last?
> try two and die if the second fails???
> at least one system just creates more ptys...
> 

Viro's working on it... but as someone else pointed out,
"ssh root@machine bash -i" works great without any ptys.  You don't
have all features, but enough to nuke whatever it is that's eating
them all.

     -hpa
-- 
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