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Date:      Sat, 19 Jan 2002 17:03:09 +0300
From:      "Andrey A. Chernov" <ache@nagual.pp.ru>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/lib/libpam/modules/pam_opie pam_opie.c
Message-ID:  <20020119140308.GA9574@nagual.pp.ru>
In-Reply-To: <20020119134810.GB9275@nagual.pp.ru>
References:  <200201191009.g0JA95b91076@freefall.freebsd.org> <20020119042808.A67985@xor.obsecurity.org> <20020119123903.GA8776@nagual.pp.ru> <20020119124322.GB8776@nagual.pp.ru> <20020119053506.A77530@xor.obsecurity.org> <20020119134810.GB9275@nagual.pp.ru>

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On Sat, Jan 19, 2002 at 16:48:10 +0300, Andrey A. Chernov wrote:

> nobody comes with re-implementation, it is removed because cause problems.

Problems are:

1) User confusion.

Example: Imagine that you have insecure host and want to enter 'su'. You
can configure it to use OPIE. And afterwards not only you will see its
prompt, but all other users, not OPIE-enabled, will see fake promts too,
constantly asking questions to admin.

2) Automatic tasks protocol confusion.

Example: Imagine that you have script which enters FTP, confirming=20
user/password, in the send/expect form. If you ever enable OPIE for _one_=
=20
ftp user in your system, the script stops to work due to unknown FTP=20
response.

3) False sense that OPIE is alive.

Example: Imagine that filesystem error remove some OPIE-critical file. And=
=20
very-very long time users will try to enter the system answering on fake=20
prompts instead of reporting its admin immediately.

All of this so obvious so I wonder what ever discussion can happens here.


--=20
Andrey A. Chernov
http://ache.pp.ru/

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