[Samba] **[EXTERNAL]**Re: Samba rejecting authentication from Windows machines

Kees van Vloten keesvanvloten at gmail.com
Thu Jul 20 14:54:21 UTC 2023

On 20-07-2023 16:50, Kothe Patrik via samba wrote:
> Thanks for the info. I'm going to uninstall this update on the RSAT-VM to see if anything changes.
Be aware that MS fixed a 132 vulnerabilities, among which 6 zero-days.
> Although I have to add, this doesn't really match with the Trust problem since it was one week before this MS-patch, that somebody already reported the current issue. The only difference is, that back then the issue just disappeared by itself after a few hours. That's why we couldn't investigate it earlier.
> Kind regards
> Patrik
> -----Original Message-----
> From: samba <samba-bounces at lists.samba.org> On Behalf Of Rowland Penny via samba
> Sent: Thursday, 20 July 2023 16:24
> To: samba at lists.samba.org
> Cc: Rowland Penny <rpenny at samba.org>
> Subject: **[EXTERNAL]**Re: [Samba] Samba rejecting authentication from Windows machines
> On 20/07/2023 15:02, Kothe Patrik via samba wrote:
>> What version of Samba are the DCs running and on what OS ?
>>           --> They're still running on 4.13.17 and Debian 10 since that's the pre-packed version we started with and didn't dare to upgrade so far.
>> Was anything updated on any of the machines ? If so, what ?
>>           --> No. We had our monthly maintenance window but there were
>> no upgrades to the Samba DCs This could be more fall out from Microsoft's last update
>>           --> What do you mean with this? I haven't read anything in this direction while searching for the issue.
> On the 7th July, Microsoft released a large update, KB5028166 (this also seems to have different identities on different Windows versions), after the update there were numerous Samba problems, mostly to do with trusts and authentication. an interim patch was quickly produced and this seems to have mitigated the problem.
> I would suggest that upgrading Samba is probably your next step, but you will probably have to upgrade to bullseye or bookworm.
> Rowland
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