[cifs-protocol] [REG:112051046226036] Windows 2008 R2 doesn’t return expiry on SMB2 expired sessions

[Obaid Farooqi]

Hi Metze:
Thank you for pointing out this behavior of Windows 2008 R2. In a future release of MS-SMB2, section “3.3.5.2.9   Verifying the Session” will be modified as follows:

Existing text
=========

“…
If a session is found and Session.State is set to Expired, the server MUST fail the request with STATUS_NETWORK_SESSION_EXPIRED….
“

New text
=======

“…
If a session is found and Session.State is set to Expired, the server SHOULD <WBN> fail the request with STATUS_NETWORK_SESSION_EXPIRED…
“
“<WBN>>: Section 3.3.5.2.9: When Session.State is Expired, Windows Vista, Windows Server 2008, Windows 7 and Windows Server 2008 R2 servers do not fail the request in the following cases: If the SMB2 header of the request has SMB2_FLAGS_SIGNED set in the Flags field, and the request is not an SMB2 LOCK request as specified in section 2.2.26.”

Please let me know if it does not answer your question.



Regards,
Obaid Farooqi
Escalation Engineer | Microsoft

Exceeding your expectations is my highest priority.  If you would like to provide feedback on your case you may contact my manager at nkang at Microsoft dot com

From: Obaid Farooqi
Sent: Wednesday, May 23, 2012 11:14 AM
To: 'Stefan (metze) Metzmacher' (metze at samba.org)
Cc: MSSolve Case Email
Subject: RE:[REG:112051046226036] Windows 2008 R2 doesn’t return expiry on SMB2 expired sessions

Hi Metze:
I look into the code and it looks like before allowing any operation, server does validate the session (which includes checking for expiration). Can you please send a network traces to show this?

Regards,
Obaid Farooqi
Escalation Engineer | Microsoft

Exceeding your expectations is my highest priority.  If you would like to provide feedback on your case you may contact my manager at nkang at Microsoft dot com

From: Obaid Farooqi
Sent: Tuesday, May 15, 2012 5:18 PM
To: 'Stefan (metze) Metzmacher' (metze at samba.org<mailto:metze at samba.org>)
Cc: MSSolve Case Email
Subject: RE:[REG:112051046226036] Windows 2008 R2 doesn’t return expiry on SMB2 expired sessions

Hi Metze:
Can you please send me a network trace for this issue?

Regards,
Obaid Farooqi
Escalation Engineer | Microsoft

Exceeding your expectations is my highest priority.  If you would like to provide feedback on your case you may contact my manager at nkang at Microsoft dot com

From: Obaid Farooqi
Sent: Tuesday, May 15, 2012 4:58 PM
To: 'Stefan (metze) Metzmacher' (metze at samba.org<mailto:metze at samba.org>)
Cc: MSSolve Case Email
Subject: [REG:112051046226036] Windows 2008 R2 doesn’t return expiry on SMB2 expired sessions

Hi Metze:
I will help you with this issue and will be in touch as soon as I have an answer.

Regards,
Obaid Farooqi
Escalation Engineer | Microsoft

Exceeding your expectations is my highest priority.  If you would like to provide feedback on your case you may contact my manager at nkang at Microsoft dot com


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