[Samba] Bad SMB2 (sign_algo_id=1) signature for message

Jones Syue 薛懷宗 jonessyue at qnap.com
Mon Apr 1 10:03:33 UTC 2024


> [2024/03/01 15:59:00.612141,  0, pid=1778617] libcli/smb/smb2_signing.c:639(smb2_signing_check_pdu)
>    Bad SMB2 (sign_algo_id=1) signature for message

Hello Michael,

what is the linux distro and samba version in your env, thank you :)

It looks like a client-side tool could see similar output, from my env:
$ rpcclient -U 'nobody%nobody' -c 'netshareenumall' 127.0.0.1
Bad SMB2 (sign_algo_id=2) signature for message
[0000] 00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00   ........ ........
[0000] 3B F0 CD 43 12 2D 1F D2   47 30 64 EE 8C 45 29 D2   ;..C.-.. G0d..E).
Cannot connect to server.  Error was NT_STATUS_ACCESS_DENIED
$ rpcclient --version
Version 4.15.13-Ubuntu

My environment is:
Ubuntu 22.04.4 LTS
Samba 4.15.13

--

Regards,
Jones Syue | 薛懷宗
QNAP Systems, Inc.



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