bugtraq - RE: Solaris telnet vulnberability

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Date: Mon, 19 Feb 2007 08:27:51 -0800
From: "Michael Wojcik" <Michael.Wojcik@...rofocus.com>
To: <bugtraq@...urityfocus.com>
Cc: "Nate Eldredge" <nge@...hmc.edu>
Subject: RE: Solaris telnet vulnberability - how many on your network?

> From: Nate Eldredge [mailto:nge@...hmc.edu] 
> Sent: Friday, 16 February, 2007 21:42
> 
> On Sat, 17 Feb 2007, Darren Reed wrote:
> 
> >
> > Solaris's /bin/login has never supported the "-f" command line
option
> > until Solaris 10 (RTFM) so this exploit was just plain not possible.
> 
> That is not correct.  On a Solaris 8 box the -f option is accepted
without 
> error.

Which does not show that it's "supported".  /bin/true accepts the -f
option, too.

> I don't have root so I can't verify that it does the right thing,

You're using a Solaris 8 system with no entry in /etc/passwd for UID 0?
Extraordinary.

> but at least as a normal user "login -f asdfasdf" does nothing

I haven't looked at the Solaris 10 login sources, but IIRC on AIX, this
bug required that the username be appended to the -f ("-froot", not "-f
root").

> while "login" without arguments presents a prompt.

And what does "login -q asdfasdf" do?  What about "login -z asdfasdf"?

(I know what they do on a couple of older Solaris boxes I happen to
have, but I'll leave this as an exercise for the reader.)

-- 
Michael Wojcik
Principal Software Systems Developer, Micro Focus