Bug 40869 – log.samba spammed: NTLMSSP NTLM2 packet check failed due to invalid signature!

Bug 40869 - log.samba spammed: NTLMSSP NTLM2 packet check failed due to invalid signature!


Summary:	log.samba spammed: NTLMSSP NTLM2 packet check failed due to invalid signature!

Status:	RESOLVED WONTFIX

Product:	UCS
Classification:	Unclassified
Component:	Samba4
Version:	UCS 4.2
Hardware:	Other Linux

Importance:	P4 normal (vote)
Target Milestone:	---
Assigned To:	Samba maintainers
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Reported:	2016-03-09 13:06 CET by Arvid Requate
Modified:	2020-07-03 20:54 CEST (History)
CC List:	1 user (show)

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What kind of report is it?:	Development Internal
What type of bug is this?:	---
Who will be affected by this bug?:	---
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Bug group (optional):	Troubleshooting
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Flags:	requate: Patch_Available+

Attachments
1.patch (522 bytes, patch) 2016-03-09 13:06 CET, Arvid Requate	Details \| Diff
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Description Arvid Requate

2016-03-09 13:06:56 CET

Created attachment 7524 [details]
1.patch

Ticket#: 2016030821000223

In some customer environments log.samba is spammed with these messages:
========================================================================
[2016/03/06 06:34:59.587589,  0, pid=3678] ../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
  NTLMSSP NTLM2 packet check failed due to invalid signature!
[2016/03/06 06:34:59.627542,  0, pid=3678] ../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
  NTLMSSP NTLM2 packet check failed due to invalid signature!
[2016/03/06 06:34:59.940253,  0, pid=3678] ../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
  NTLMSSP NTLM2 packet check failed due to invalid signature!
[2016/03/06 06:34:59.985007,  0, pid=3678] ../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
  NTLMSSP NTLM2 packet check failed due to invalid signature!
========================================================================

According to https://lists.samba.org/archive/samba-technical/2011-January/075623.html this condition is normal. So we should definitely reduce the log level of that message from 0 to maybe 2. Patch attached.

Comment 1 Ingo Steuwer

2020-07-03 20:54:02 CEST

This issue has been filed against UCS 4.2.

UCS 4.2 is out of maintenance and many UCS components have changed in later releases. Thus, this issue is now being closed.

If this issue still occurs in newer UCS versions, please use "Clone this bug" or reopen it and update the UCS version. In this case please provide detailed information on how this issue is affecting you.