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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Subject: Re: OpenSSH, PAM and kerberos
References: <20130829004844.GA70584@zxy.spb.ru>
Date: Fri, 30 Aug 2013 09:44:54 +0200
In-Reply-To: <20130829004844.GA70584@zxy.spb.ru> (Slawa Olhovchenkov's message
 of "Thu, 29 Aug 2013 04:48:44 +0400")
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Slawa Olhovchenkov <slw@zxy.spb.ru> writes:
> I am try to setup single sign-on and found this is imposuble due to
> bug in OpenSSH: currently sshd do pam_authenticate() and
> pam_acct_mgmt() from child process, but pam_setcred() from paren
> proccess. pam_krb5 in pam_sm_setcred() required information from
> pam_sm_authenticate and can't work corretly (can't create
> /tmp/krb5cc_NNNN, can't set envirompent KRB5CCNAME and so).

PAM authentication in OpenSSH was broken for non-trivial cases when
privilege separation was implemented.  Fixing it properly would be very
difficult.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no