[Samba] prs_mem_get: buffer overrun

M.Pflueger franztu at institut.physiochem.uni-bonn.de
Tue Dec 5 16:15:07 GMT 2006

Hello all,

I repost this mail with a new subject line because on
the original one ("Unable to join domain from WNT4")
i've got no respnse.

version is 3.0.23d (the same happens with 3.0.21c )
running as a PDC

OS: Linux, (from SuSE 9.3) on dual Opterons.

After upgrading from 3.0.11 to 3.0.23d, all Windows-NT4-sp6
machines were no longer DOMAIN-members - WinXP or Win2000
members work as usual. Trying to get
the WNT4 machines back into the domain gave about this message
( translated from german text ) on the NT4-Machines:

"To change or to add an account in the domain is not possible.
The assigned account informations do not give you enough privileges
to create or change an account."

A part of the logs:
[2006/11/30 15:00:47, 2] smbd/sesssetup.c:setup_new_vc_session(799)
  setup_new_vc_session: New VC == 0, if NT4.x compatible we would close
all old resources.
[2006/11/30 15:00:47, 2] auth/auth.c:check_ntlm_password(309)
  check_ntlm_password:  authentication for user [smbadmin] -> [smbadmin]
-> [smbadmin] succeeded
[2006/11/30 15:00:47, 2] smbd/reply.c:reply_tcon_and_X(711)
  Serving IPC$ as a Dfs root
[2006/11/30 15:00:47, 0] rpc_parse/parse_prs.c:prs_mem_get(559)
  prs_mem_get: reading data of size 2 would overrun buffer by 1 bytes.
[2006/11/30 15:00:47, 0] rpc_server/srv_samr.c:api_samr_set_userinfo(848)
  api_samr_set_userinfo: Unable to unmarshall SAMR_Q_SET_USERINFO.
[2006/11/30 15:00:47, 0] rpc_server/srv_pipe.c:api_rpcTNP(2287)
  api_rpcTNP: samr: SAMR_SET_USERINFO failed.

Whats happening here ??

A snippet from "pdbedit -Lv -u smbadmin"
Unix username:        smbadmin
NT username:
Account Flags:        [U          ]
User SID:             S-1-5-21-1042923542-3040449016-515553985-512
Primary Group SID:    S-1-5-21-1042923542-3040449016-515553985-513
Full Name:            Samba Server Sys Admin
Home Directory:       \\umv8\smbadmin
HomeDir Drive:
Logon Script:
Profile Path:         \\umv8\Profiles\smbadmin
Domain:               PHYSIOCHEM

A snippet from "net rpc rights list accounts"

Greetings, Manfred

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