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rpc_bind reply
(This used to be commit c6e73ff091b4d87111b33735400fdd10d4c8671c)
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for setting up an schannel connection. This solves the problem
of a Samba DC running winbind, trusting a native mode AD domain,
and needing to enumerate AD users via wbinfo -u.
(This used to be commit e9f109d1b38e0b0adec9b7e9a907f90a79d297ea)
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support 128 bit encryption
(This used to be commit 316ba5ad89ddfa445d44d28141c5901fc64aec90)
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NT session.
Andrew Bartlett
(This used to be commit 01fff20e6e0212e9f70a5a66c3e46f7079b342f1)
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(This used to be commit 170c443b19604c3ec997ae494954c473e356e59d)
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(This used to be commit 3aac1e549eaf4693ded84be432a2c94b6331ef6d)
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so dont check for it
(This used to be commit 4d68d3d5ddeda9589f2e3387144fdac616bb791f)
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Volker
(This used to be commit e597420421e085b17dcdc062c5900518d0d4e685)
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would attempt to supply a password to the 'inside' NTLMSSP, which the
remote side naturally rejected.
Andrew Bartlett
(This used to be commit da408e0d5aa29ca1505c2fd96b32deae9ed940c4)
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defaults specified by the caller to prevail.
Don't use NTLM2 for RPC pipes, until we know how it works in signing or sealing.
Call ntlmssp_sign_init() unconditionally in the client - we setup the
session key, why not setup the rest of the data.
Andrew Bartlett
(This used to be commit 48123f7e42c3fde85887de23c80ceee04c2f6281)
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check_bind_response()
(This used to be commit 5e062f72baad6f7a70f1a3c8cf190535ccacc89e)
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- NTLM2 support in the server
- KEY_EXCH support in the server
- variable length session keys.
In detail:
- NTLM2 is an extension of NTLMv1, that is compatible with existing
domain controllers (unlike NTLMv2, which requires a DC upgrade).
* This is known as 'NTLMv2 session security' *
(This is not yet implemented on the RPC pipes however, so there may
well still be issues for PDC setups, particuarly around password
changes. We do not fully understand the sign/seal implications of
NTLM2 on RPC pipes.)
This requires modifications to our authentication subsystem, as we
must handle the 'challege' input into the challenge-response algorithm
being changed. This also needs to be turned off for
'security=server', which does not support this.
- KEY_EXCH is another 'security' mechanism, whereby the session key
actually used by the server is sent by the client, rather than being
the shared-secret directly or indirectly.
- As both these methods change the session key, the auth subsystem
needed to be changed, to 'override' session keys provided by the
backend.
- There has also been a major overhaul of the NTLMSSP subsystem, to merge the 'client' and 'server' functions, so they both operate on a single structure. This should help the SPNEGO implementation.
- The 'names blob' in NTLMSSP is always in unicode - never in ascii.
Don't make an ascii version ever.
- The other big change is to allow variable length session keys. We
have always assumed that session keys are 16 bytes long - and padded
to this length if shorter. However, Kerberos session keys are 8 bytes
long, when the krb5 login uses DES.
* This fix allows SMB signging on machines not yet running MIT KRB5 1.3.1. *
- Add better DEBUG() messages to ntlm_auth, warning administrators of
misconfigurations that prevent access to the privileged pipe. This
should help reduce some of the 'it just doesn't work' issues.
- Fix data_blob_talloc() to behave the same way data_blob() does when
passed a NULL data pointer. (just allocate)
REMEMBER to make clean after this commit - I have changed plenty of data structures...
(This used to be commit f3bbc87b0dac63426cda6fac7a295d3aad810ecc)
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the bind response to WKSSVC it does not send \PIPE\ntsvcs as NT4 (did not
check w2k) but \PIPE\wkssvc. I'm not sure whether we should make this check at
all, so making it a bit more liberal should hopefully not really hurt.
Volker
(This used to be commit 029dcb351bcfab70ed0afa4acf4bd64316bfd757)
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clientspreviously joined to the Samba domain
(This used to be commit 3802f5895ee18507c6f467bd11db0b1147a6fdfd)
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- When connecting to the NETOGON pipe, we make a call to auth2, in order
to verify our identity. This call was being made with negotiation flags
of 0x1ff. This caused our account to be downgraded. If we instead make
the call with flags > 1ff (such as 0x701ff), then this does not occour.
- This is *not* related to the use of kerberos for the CIFS-level connection
My theory is that Win2k has a test to see if we are sending *exactly* what
NT4 sent - setting any other flags seems to cause us to remain intact.
Also ensure that we only have 'setup schannel' code in a few places, not
scattered around cmd_netlogon too.
Andrew Bartlett
(This used to be commit e10f0529fe9d8d245b3cd001cce6a9a86896679c)
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(This used to be commit 398bd14fc6e2f8ab2f34211270e179b8928a6669)
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NTLMSSP with "" username, NULL password), and add --machine-pass (-P) to
all of Samba's clients.
When connecting to an Active Directory DC, you must initiate the CIFS level
session setup with Kerberos, not a guest login. If you don't, your machine
account is demoted to NT4.
Andrew Bartlett
(This used to be commit 3547cb3def45a90f99f67829a533eac1ccba5e77)
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(This used to be commit 4d26feabd75d5b298276b0c5880b9765507bb6ae)
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Jeremy.
(This used to be commit f3f29665bd2c396c4756cd23f603ac768fea66fd)
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(This used to be commit e12f6a8c13f27c3caea96b467cc4294e20dad341)
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connection that set it up has been shut down.
(Also, pipes still connected, and reconnections to the same pipe (eg SAMR)
may continue to use that session key until their TCP/IP connection is shut
down)
Allow further testing by printing out the session key, and allowing it's input
into rpcclient.
Next step is automatic storage in a TDB.
Andrew Bartlett
(This used to be commit fa4d7be1619b51aacec37ddf995c940b8100aef9)
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so the shared sequence number will not be strictly odd/even.
Andrew Bartlett
(This used to be commit 77c3e69aef545d3f9b7cec9efdc366cbeb0c745e)
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in both SCHANNEL and NTLMSSP.
(Try not to deal with a general case as individual special cases...)
Andrew Bartlett
(This used to be commit 6ca77bd28f16f9f65ff40bf8996e39356de5b4f8)
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(This used to be commit ff0c71148e405eeb49efbc51461325c7f2207433)
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of an inline replacement...
Andrew Bartlett
(This used to be commit d941255a97fc6d0d62eae1602075b1aa0481cde5)
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the schannel code, but I've included that anyway. :-)
This patch revives the client-side NTLMSSP support for RPC named pipes
in Samba, and cleans up the client and server schannel code. The use of the
new code is enabled by the 'sign', 'seal' and 'schannel' commands in
rpcclient.
The aim was to prove that our separate NTLMSSP client library actually
implements NTLMSSP signing and sealing as per Microsoft's NTLMv1 implementation,
in the hope that knowing this will assist us in correctly implementing
NTLMSSP signing for SMB packets. (Still not yet functional)
This patch replaces the NTLMSSP implementation in rpc_client/cli_pipe.c with
calls to libsmb/ntlmssp.c. In the process, we have gained the ability to
use the more secure NT password, and the ability to sign-only, instead of
having to seal the pipe connection. (Previously we were limited to sealing,
and could only use the LM-password derived key).
Our new client-side NTLMSSP code also needed alteration to cope with our
comparatively simple server-side implementation. A future step is to replace
it with calls to the same NTLMSSP library.
Also included in this patch is the schannel 'sign only' patch I submitted to
the team earlier. While not enabled (and not functional, at this stage) the
work in this patch makes the code paths *much* easier to follow. I have also
included similar hooks in rpccleint to allow the use of schannel on *any* pipe.
rpcclient now defaults to not using schannel (or any other extra per-pipe
authenticiation) for any connection. The 'schannel' command enables schannel
for all pipes until disabled.
This code is also much more secure than the previous code, as changes to our
cli_pipe routines ensure that the authentication footer cannot be removed
by an attacker, and more error states are correctly handled.
(The same needs to be done to our server)
Andrew Bartlett
(This used to be commit 5472ddc9eaf4e79c5b2e1c8ee8c7f190dc285f19)
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strupper_m/strlower_m.
I really want people to think about when they're using multibyte strings.
Jeremy.
(This used to be commit ff222716a08af65d26ad842ce4c2841cc6540959)
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same session (TCP connection) as the one the challenge was requested
from.
(This used to be commit 5cb9b99f0f5dad589ac7def667e354d6f92f8822)
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channel:
- If the domain name passed to create_rpc_bind_req() is empty, use
lp_workgroup()
- Correctly set the auth_padding field when the send_size is a multiple
of 8 bytes
I've tested with nt4sp6 and win2ksp0 and it seems to work, although
there are no password hashes transferred from win2k. The empty
passwords are being protected by the secure channel encryption though.
(This used to be commit a8c11e855611c91e94787387c62ac629232cacfa)
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useful in the auth verifier yet. So this patch ignores it.
Really checking this would be a lot more intrusive: in rpc_api_pipe we
would have to distinguish between binds and normal requests, or have
more state in the netsec info of cli_state, which is also somewhat
hackish.
Volker
(This used to be commit 8de04fcf680a9bc5054965577eb500e0541ffe66)
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important once we start doing schannel, as there would be a lot more
roundtrips for the second PIPE open and bind. With this patch logging
in to a member server is a matter of two (three if you count the
ack...) packets between us and the DC.
Volker
(This used to be commit 5b3cb7725a974629d0bd8b707bc2940c36b8745e)
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Jeremy.
(This used to be commit a330bf170eb8e78200367c90833cbc90255642cb)
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tidying up. Samsync still doesn't work due to bad parsing of net_io_sam_alias_info
with a blank description. Still working on this....
Jeremy.
(This used to be commit 942fede9a57a9319cf67388004dd45fa8a045f41)
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multi-PDU encode/decode with SCHANNEL. Also need to test against WNT DC.
Jeremy.
(This used to be commit ff66d4097088409205b6bad5124a78ef9946010d)
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(This used to be commit dfa9412da567d2477ee5b1e6ecdc96b8dea3c21d)
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rpcclient -S pdc -U% -c "samlogon user password"
and it should work with the schannel. Needs testing against platforms
different from NT4SP6.
Volker
(This used to be commit eaef0d8aeff1aa5a067679be3f17e08d7434e1e8)
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(This used to be commit 648307ab3d16cb557cead27d6799a741a266c0d5)
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(This used to be commit 7a4c87484237308cb3ad0d671687da7e0f6e733b)
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warnings. (Adds a lot of const).
Andrew Bartlett
(This used to be commit 3a7458f9472432ef12c43008414925fd1ce8ea0c)
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Jeremy.
(This used to be commit ddd70995951c072a02fc3bddd7a94ccbf301f62c)
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dashes of const. This is a rather large check-in, some things may break.
It does compile though :-).
Jeremy.
(This used to be commit f755711df8f74f9b8e8c1a2b0d07d02a931eeb89)
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Jeremy.
(This used to be commit 121c456d4347bbefd9b2ce0141e3f53a21f37066)
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(This used to be commit 70838b33a61a10e9bd1622611a6be3b0cac08479)
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generates some errors we haven't seen before which are inappropriately
logged at level 0.
(This used to be commit 40d5112048ab0943caef7149b7a0d9dee5256b87)
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(This used to be commit 1094e1ffde09b0393b11d2cce148b6da893348c1)
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(This used to be commit 09c6f6329d6ae9327b7ef06de0ea78d24d805456)
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* add some files missing from a previous commit
(This used to be commit 29159c97371c75327e377f9d13406dad46095568)
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(This used to be commit 028477e35208e76fedbc7c743426fd9be94b7cf0)
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from APP_HEAD
(This used to be commit 1cfd2ee433305e91e87804dd55d10e025d30a69e)
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(This used to be commit 65e7b5273bb58802bf0c389b77f7fcae0a1f6139)
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