[Samba] Sudden authentication failures, hex dumps in log.samba

Andrew Bartlett abartlet at samba.org
Mon May 13 23:04:02 MDT 2013

On Mon, 2013-05-13 at 14:24 +0300, Pekka L.J. Jalkanen wrote:

> > Any ideas how to resolve this problem?
> No comments, it seems.
> I can see that even if this is a bug in Samba it would be really hard to
> reproduce. But it's really frustrating too, because if the
> authentication isn't reliable I sort of have to keep the Windows DC around.
> So if somebody would have an enlightened suggestion what to do, I'd be
> grateful.
> The only idea I'm having myself would be to recreate the machine
> accounts of the computers in question, but that'd be just a shot in the
> dark, and if the problem lies within the user accounts instead, that
> wouldn't help.


I'm sorry I haven't been able to get back to you.  The issue is the same
for all of these accounts.  We simply have a password encoded in a
format that we do not correctly parse.  The 00 20 stuff is literally
some unicode space (ie the spacebar, yes!) padding that is in this

I need to get both and encrypted copy of the data and some time to work
over it, so we can correct this issue in our IDL. 

Andrew Bartlett

Andrew Bartlett                                http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org

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