I will look into Windows 2008 behavior on this and get back to you as soon as I 
can; I expect to be able to start later today.

Regards,
Bill Wesse
MCSE, MCTS / Senior Escalation Engineer, US-CSS DSC PROTOCOL TEAM
8055 Microsoft Way
Charlotte, NC 28273
TEL:  +1(980) 776-8200
CELL: +1(704) 661-5438
FAX:  +1(704) 665-9606

-----Original Message-----
From: Andrew Bartlett [mailto:abart...@samba.org] 
Sent: Tuesday, August 25, 2009 8:35 PM
To: Bill Wesse
Cc: cifs-proto...@samba.org; p...@tridgell.net; Matthias Dieter Wallnöfer
Subject: RE: [cifs-protocol] Please clarify LSA and OsVersion behaviour in 
MS-NRPC (SRX090727600015)

On Tue, 2009-08-25 at 07:04 -0700, Bill Wesse wrote:
> Good morning Andrew. Thanks for your feedback. I have interpolated available 
> information below.
> 
> >> Andrew - I think I might have missed a previous email of yours. If so, I 
> >> offer my apologies.
> >> 
> >> The actual Windows behavior is - as Matthias noted previously - 
> >> that NetrLogonGetDomainInfo bypasses the servicePrincipalName 
> >> constraints (which are documented in [MS-ADTS] 3.1.1.5.3.1.1.4).
> >
> >OK, When will this security bug be addressed?  I thought I saw a difference 
> >in this behaviour for Windows 2008 - >honestly I was expecting 'Windows 2008 
> >fixed this' as your reply. 
> 
> This is currently 'work-in-progress', and I will update you as soon as I have 
> information. My understanding is that this is not an issue with releases 
> after Windows 2003 (which matches with your comments concerning Windows 2008).

Great.  Can you give me the exact rules as they apply to Windows 2008 then?  I 
can work from them to fix this up to match Windows 2008 behaviour (which was my 
original goal, but wasn't what Matthias wrote the code to match).

> >> We are currently working on which document this should be addressed 
> >> in ([MS-ADTS] or [MS-NRPC]). I expect that [MS-NRPC] is not the 
> >> correct place, since SPN validation is carried out by Active 
> >> Directory, outside the scope of the NetLogon protocol. I do not yet 
> >> have any information concerning whether or not any product bugs 
> >> will be filed, but I have alerted the appropriate folks here at 
> >> Microsoft. That may impact any forthcoming Windows Behavior notes.
> 
> >OK.  I would appreciate an update on what the expected long-term 
> >behaviour of Microsoft products will be, so we >know what we must 
> >emulate.  (Oh the joys of bug-for-bug compatibility)
> 
> Some of this will depend on Windows 2003 and earlier bug/fix details. I will 
> keep you advised!
> 
> >Thanks for the detail.  I look forward to being able to use it some 
> >day :-)
> 
> My pleasure!

Thanks,

Andrew Bartlett

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