[ANNOUNCEMENT] Updated: OpenSSH-3.5p1-1

[Elfyn McBratney]

If you check your /var/log/sshd.log you might see that the permissions are 
too open on your key files...

Elfyn
emcb_exposure@hotmail.com
-----------------------------------------------
elfyn@exposure.org.uk

>From: "Karl M" <karlm30@hotmail.com>
>To: cygwin@cygwin.com
>Subject: Re: [ANNOUNCEMENT] Updated: OpenSSH-3.5p1-1
>Date: Thu, 07 Nov 2002 09:23:30 -0800
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>The behavior I see now is that if I do
>
>chown administrators.none /etc/ssh_host_rsa_key*
>chmod 777 /etc/ssh_host_rsa_key*
>
>Then with StrictModes enabled, sshd will start and run just fine (running 
>as system). But if I then do
>
>chown system.none /etc/ssh_host_rsa_key*
>
>Then sshd fails to start. But I (think I) recall that in the past the 
>protection had to be tight and the owner had to be system for sshd to 
>start? Am I remembering correctly?
>
>Thanks,
>
>...Karl
>
>
>
>>From: Corinna Vinschen <corinna-cygwin@cygwin.com>
>>Reply-To: cygwin@cygwin.com
>>To: cygwin@cygwin.com
>>Subject: Re: [ANNOUNCEMENT] Updated: OpenSSH-3.5p1-1
>>Date: Thu, 7 Nov 2002 17:11:57 +0100
>>
>>On Thu, Nov 07, 2002 at 06:59:08AM -0800, Karl M wrote:
>> > Hi All...
>> >
>> > I just updated to 3.5p1-1. I had to set PermitUserEnvironment in my
>> > sshd_config file. Should this be included by default in the 
>>ssh-host-config
>> > script?
>>
>>You're right that PermitUserEnvironment should be added to 
>>ssh-host-config.
>>But it's set to no by default, so you have to change it anyway.
>>
>> > I was a bit puzzled by the file owner and permission checking for the 
>>host
>> > keys now (with StrictModes enabled)...If the owner is wrong, the mode
>> > checking is ignored. I recall this test being stronger in the 
>>past...didn't
>> > the owner have to be correct (SYSTEM)? If so, why the change to a 
>>kinder
>> > gentler (less effective) safety check?
>>
>>auth.c, line 378ff:
>>
>>   if (options.strict_modes &&
>>       (stat(user_hostfile, &st) == 0) &&
>>       ((st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
>>       (st.st_mode & 022) != 0)) {
>>	  log("Authentication refused for %.100s: "
>>	      "bad owner or modes for %.200s",
>>	      pw->pw_name, user_hostfile);
>>
>>The above code checks the mode additionally to the user id so what's
>>gentler here?  Or do you mean another piece of code?
>>
>> > Given the host local security issues with using Cygwim, is there much
>> > advantage to priv sep? Could someone please give a brief overview of 
>>what it
>> > is and how and why it helps?
>>
>>README.privsep?
>>
>>Corinna
>>
>>--
>>Corinna Vinschen                  Please, send mails regarding Cygwin to
>>Cygwin Developer                                mailto:cygwin@cygwin.com
>>Red Hat, Inc.
>>
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