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This matches what smbstatus prints out. Note there's also the removal of
an '-' in "hmac-sha-256" => HMAC-SHA256".
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14825
RN: "{client,server} smb3 {signing,encryption} algorithms" should use the same strings as smbstatus output
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed Sep 8 16:37:07 UTC 2021 on sn-devel-184
Doing so is undefined behaviour.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The memory leak bug up to 3.6.14 was only related to ccm, but gcm was
fine.
This avoids talloc+memcpy on more systems, e.g. ubuntu 20.04,
and brings ~ 20% less cpu overhead, see:
https://hackmd.io/@asn/samba_crypto_benchmarks
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14764
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Make use of smb2cli_parse_dyn_buffer() in smb2cli_read_done()
as it was exactly introduced for a similar problem see:
commit 4c6c71e137
Author: Stefan Metzmacher <metze@samba.org>
AuthorDate: Thu Jan 14 17:32:15 2021 +0100
Commit: Volker Lendecke <vl@samba.org>
CommitDate: Fri Jan 15 08:36:34 2021 +0000
libcli/smb: allow unexpected padding in SMB2 IOCTL responses
A NetApp Ontap 7.3.7 SMB server add 8 padding bytes to an
offset that's already 8 byte aligned.
RN: Work around special SMB2 IOCTL response behavior of NetApp Ontap 7.3.7
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Pair-Programmed-With: Volker Lendecke <vl@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Fri Jan 15 08:36:34 UTC 2021 on sn-devel-184
RN: Work around special SMB2 READ response behavior of NetApp Ontap 7.3.7
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jul 15 23:53:55 UTC 2021 on sn-devel-184
This test will use a FSCTL_SMBTORTURE_GLOBAL_READ_RESPONSE_BODY_PADDING8
in order to change the server behavior of READ responses regarding
the data offset.
It will demonstrate the problem in smb2cli_read*() triggered
by NetApp Ontap servers.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
For now client_sign_algos->num_algos will always be 0,
but that'll change in the next commits.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is important as AES-128-GMAC signing will derive the NONCE from the MID.
It also means a STATUS_PENDING response must never be signed.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is important as with AES-128-GMAC signing, the nonce will be
derived from the MID.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We should propagate these errors to the caller instead of masking them
with ACCESS_DENIED. And for ACCESS_DENIED we should not disconnect the
connection.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
It checks that the resulting algorithms (most likely for
dialects < 3.1.1) are actually allowed.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
SMB 3.0 and 3.0.2 require aes-128-ccm, so we need to reject them unless
'client smb3 encryption algorithms' allows them.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
These were only used in Windows development versions but not in
production.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14699
../../source4/dsdb/common/util_links.c: In function ‘ndr_guid_compare’:
../../source4/dsdb/common/util_links.c:38:29: error: ‘v1_data’ may be used uninitialized [-Werror=maybe-uninitialized]
38 | struct ldb_val v1 = data_blob_const(v1_data, sizeof(v1_data));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/dsdb/common/util_links.c:22:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/dsdb/common/util_links.c:37:17: note: ‘v1_data’ declared here
37 | uint8_t v1_data[16];
| ^~~~~~~
cc1: all warnings being treated as errors
[1729/3991] Compiling source3/smbd/smbXsrv_open.c
../../libcli/auth/smbencrypt.c: In function ‘decode_wkssvc_join_password_buffer’:
../../libcli/auth/smbencrypt.c:1045:32: error: ‘_confounder’ may be used uninitialized [-Werror=maybe-uninitialized]
1045 | DATA_BLOB confounder = data_blob_const(_confounder, 8);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../libcli/auth/smbencrypt.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../libcli/auth/smbencrypt.c:1044:17: note: ‘_confounder’ declared here
1044 | uint8_t _confounder[8];
| ^~~~~~~~~~~
cc1: all warnings being treated as errors
[2624/3991] Compiling source4/torture/rpc/samr.c
../../source3/rpc_client/cli_samr.c: In function ‘dcerpc_samr_chgpasswd_user2’:
../../source3/rpc_client/cli_samr.c:158:33: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
158 | DATA_BLOB session_key = data_blob_const(old_nt_hash, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source3/../lib/util/samba_util.h:48,
from ../../source3/include/includes.h:256,
from ../../source3/rpc_client/cli_samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source3/rpc_client/cli_samr.c:152:17: note: ‘old_nt_hash’ declared here
152 | uint8_t old_nt_hash[16];
| ^~~~~~~~~~~
../../source3/rpc_client/cli_samr.c: In function ‘dcerpc_samr_chgpasswd_user3’:
../../source3/rpc_client/cli_samr.c:365:33: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
365 | DATA_BLOB session_key = data_blob_const(old_nt_hash, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source3/../lib/util/samba_util.h:48,
from ../../source3/include/includes.h:256,
from ../../source3/rpc_client/cli_samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source3/rpc_client/cli_samr.c:358:17: note: ‘old_nt_hash’ declared here
358 | uint8_t old_nt_hash[16];
| ^~~~~~~~~~~
cc1: all warnings being treated as errors
[3399/3991] Compiling source3/rpcclient/cmd_spotlight.c
../../source3/smbd/smbXsrv_open.c: In function ‘smbXsrv_open_set_replay_cache’:
../../source3/smbd/smbXsrv_open.c:936:26: error: ‘data’ may be used uninitialized [-Werror=maybe-uninitialized]
936 | DATA_BLOB blob = data_blob_const(data, ARRAY_SIZE(data));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source3/../lib/util/samba_util.h:48,
from ../../source3/include/includes.h:256,
from ../../source3/smbd/smbXsrv_open.c:21:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source3/smbd/smbXsrv_open.c:935:17: note: ‘data’ declared here
935 | uint8_t data[SMBXSRV_OPEN_REPLAY_CACHE_FIXED_SIZE];
| ^~~~
cc1: all warnings being treated as errors
../../source3/rpcclient/cmd_spotlight.c: In function ‘cmd_mdssvc_fetch_properties’:
../../source3/rpcclient/cmd_spotlight.c:60:18: error: ‘share_path’ may be used uninitialized [-Werror=maybe-uninitialized]
60 | status = dcerpc_mdssvc_open(b, mem_ctx,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
61 | &device_id,
| ~~~~~~~~~~~
62 | &unkn1,
| ~~~~~~~
63 | &unkn2,
| ~~~~~~~
64 | argv[2],
| ~~~~~~~~
65 | argv[1],
| ~~~~~~~~
66 | share_path,
| ~~~~~~~~~~~
67 | &share_handle);
| ~~~~~~~~~~~~~~
In file included from ../../source3/rpcclient/cmd_spotlight.c:24:
source3/../librpc/gen_ndr/ndr_mdssvc_c.h:26:10: note: by argument 8 of type ‘const char *’ to ‘dcerpc_mdssvc_open’ declared here
26 | NTSTATUS dcerpc_mdssvc_open(struct dcerpc_binding_handle *h,
| ^~~~~~~~~~~~~~~~~~
../../source3/rpcclient/cmd_spotlight.c:40:14: note: ‘share_path’ declared here
40 | char share_path[1025];
| ^~~~~~~~~~
cc1: all warnings being treated as errors
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordUser2’:
../../source4/torture/rpc/samr.c:2266:19: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2266 | = data_blob_const(old_nt_hash, sizeof(old_nt_hash));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2263:17: note: ‘old_nt_hash’ declared here
2263 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordUser2_ntstatus’:
../../source4/torture/rpc/samr.c:2371:19: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2371 | = data_blob_const(old_nt_hash, sizeof(old_nt_hash));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2368:17: note: ‘old_nt_hash’ declared here
2368 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordUser3’:
../../source4/torture/rpc/samr.c:2478:38: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2478 | DATA_BLOB old_nt_hash_blob = data_blob_const(old_nt_hash, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2473:17: note: ‘old_nt_hash’ declared here
2473 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
../../source4/torture/rpc/samr.c: In function ‘test_ChangePasswordRandomBytes’:
../../source4/torture/rpc/samr.c:2794:19: error: ‘old_nt_hash’ may be used uninitialized [-Werror=maybe-uninitialized]
2794 | = data_blob_const(old_nt_hash,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
2795 | sizeof(old_nt_hash));
| ~~~~~~~~~~~~~~~~~~~~
In file included from ../../source4/../lib/util/samba_util.h:48,
from ../../source4/include/includes.h:62,
from ../../source4/torture/rpc/samr.c:24:
../../lib/util/data_blob.h:116:20: note: by argument 1 of type ‘const void *’ to ‘data_blob_const’ declared here
116 | _PUBLIC_ DATA_BLOB data_blob_const(const void *p, size_t length);
| ^~~~~~~~~~~~~~~
../../source4/torture/rpc/samr.c:2792:17: note: ‘old_nt_hash’ declared here
2792 | uint8_t old_nt_hash[16], new_nt_hash[16];
| ^~~~~~~~~~~
cc1: all warnings being treated as errors
Guenther
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We have to look at all available mappings for parsing sddl for each
special flag set. "GW" and "FX" come from two different tables, but
the previous code settled on one table and then expected both "GW" and
"FX" to come from that same table. Change the code to look at all
tables per special flag set.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Apr 21 00:04:36 UTC 2021 on sn-devel-184
We have to look at more than one map, "FRSD" is not correctly handled
right now for example. This factors out walking a map to make walking
multiple maps easier.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Use GUID_buf_string() instead of GUID_string() for encoding objects,
no need to check for NULL anymore.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This means yet another library, but having to depend on gensec just
for dcerpc_parse_binding() and basic packet parsing seems like a bit
overkill to me.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Apr 6 23:33:14 UTC 2021 on sn-devel-184
When reading the info4, the substructs might not be interesting for
you.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Callers might want the full picture. We need to make
named_pipe_auth_req_info4 public for that.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will make it simpler to return a copy of the struct
named_pipe_auth_req_info4 in the next commit.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Clang gives the following error:
../../libcli/smb/smb2_signing.c:547:48: error:
implicit conversion from enumeration type 'gnutls_mac_algorithm_t'
to different enumeration type 'gnutls_digest_algorithm_t'
[-Werror,-Wenum-conversion]
const size_t digest_len = gnutls_hash_get_len(GNUTLS_MAC_SHA256);
~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~
Should be using GNUTLS_DIG_SHA256, which is set to GNUTLS_MAC_SHA256.
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Gary Lockyer <gary@samba.org>
Autobuild-Date(master): Mon Mar 29 23:19:24 UTC 2021 on sn-devel-184
See
https://docs.microsoft.com/en-us/windows/win32/secauthz/ace-strings
for reference.
We can only use them for decoding, many of our tests depend on our
string representation of the flags.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This avoids a hardcoded list of possible ciphers.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will allow us to control the offered ciphers from the callers
later.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will be filled later with supported ciphers and other
things that can be negotiated in SMB >= 3.1.1.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The cipher algorithm is already passed via
smb2_signing_key->chipher_algo_id.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The signing algorithm is already passed via
smb2_signing_key->sign_algo_id.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
These will simplify the callers a lot.
In important part is to also remember the sign and cipher algo ids.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This prepares the negotiation of signing algorithms in future.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will allow us to have the logic in one place only
in future.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We only need to logic to calculate the signature once...
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We expect the following:
* SMB2 HDR
* SMB2 BODY FIXED
* (optional) SMB2 BODY DYN
* (optional) PADDING
Everything else is a bug.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We only need one function to calculate the signature of an SMB2 packet.
And that only need the logic based on a gnutls_mac_algorithm_t once.
The next step will convert smb2_signing_sign_pdu() to also use
smb2_signing_calc_signature(). Doing that in a separate commit
should make sure we don't introduce a symetric bug.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14512
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Jan 19 16:15:21 UTC 2021 on sn-devel-184
A NetApp Ontap 7.3.7 SMB server add 8 padding bytes to an
offset that's already 8 byte aligned.
RN: Work around special SMB2 IOCTL response behavior of NetApp Ontap 7.3.7
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Pair-Programmed-With: Volker Lendecke <vl@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Fri Jan 15 08:36:34 UTC 2021 on sn-devel-184
FSCTL_SMBTORTURE_IOCTL_RESPONSE_BODY_PADDING8 will be used
to trigger an SMB2 IOCTL response with extra padding.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This can be returned from NetApp Ontap 7.3.7 SMB server
implementations. Now we have ensured smb2_signing_check_pdu()
cannot return NT_STATUS_INVALID_PARAMETER on a signing error
it's safe to check this error code here. Windows 10
clients ignore this error from the NetApp.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
If we end up here, it's definitely a programming error in the basic
parsing layer of the SMB2 packet.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14607
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This is useful in order to test async requests
tevent_queue_wait_send/recv() can be used to block
the queue between requests or wait for the queue to be flushed.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Blob could be NULL.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14210
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Nov 16 09:47:38 UTC 2020 on sn-devel-184
When 'session->smb2->should_encrypt' is true, the client MUST encrypt
all transport messages (see also MS-SMB2 3.2.4.1.8).
Signed-off-by: Isaac Boukris <iboukris@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Avoid a talloc/free
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Oct 2 22:50:43 UTC 2020 on sn-devel-184
This implements the note from MS-NRPC 3.1.4.1 Session-Key Negotiation:
7. If none of the first 5 bytes of the client challenge is unique, the
server MUST fail session-key negotiation without further processing of
the following steps.
It lets ./zerologon_tester.py from
https://github.com/SecuraBV/CVE-2020-1472.git
report: "Attack failed. Target is probably patched."
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14497
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
This is the check Windows is using, so we won't generate challenges,
which are rejected by Windows DCs (and future Samba DCs).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14497
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
This will avoid getting rejected by the server if we generate
a weak challenge.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14497
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
It's good to have just a single isolated function that will generate
random challenges, in future we can add some logic in order to
avoid weak values, which are likely to be rejected by a server.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14497
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
lib/util/safe_string.h is similar to source3/include/safe_string.h, but
the former has fewer checks. It is missing bcopy, strcasecmp, and
strncasecmp.
Add the missing elements to lib/util/safe_string.h remove the other
safe_string.h which is in the source3-specific path. To accomodate
existing uses of str(n?)casecmp, add #undef lines to source files where
they are used.
Signed-off-by: Matthew DeVore <matvore@google.com>
Reviewed-by: David Mulder <dmulder@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Aug 28 02:18:40 UTC 2020 on sn-devel-184
Add encryption enum and function to avoid confusion when reading the
code.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
If we execute this code from python we don't have a talloc stackframe
around and segfault with talloc_tos().
To fix the crash we use the NULL context as we take care for freeing the
memory as soon as possible.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
