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2 years agosmbd: use metadata_fsp() in get_acl_group_bits()
Ralph Boehme [Wed, 27 Jul 2022 17:05:26 +0000 (19:05 +0200)] 
smbd: use metadata_fsp() in get_acl_group_bits()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(backported from commit 06555c6bcb5644fc9eea35b3cbae8d8801c65ab6)
[slow@samba.org: metadata_fsp(fsp) -> metadata_fsp(smb_fname->fsp)]

2 years agosmbd: ignore request to set the SPARSE attribute on streams
Ralph Boehme [Fri, 29 Jul 2022 12:56:41 +0000 (14:56 +0200)] 
smbd: ignore request to set the SPARSE attribute on streams

As per MS-FSA 2.1.1.5 this is a per stream attribute, but our backends don't
support it in a consistent way, therefor just pretend success and ignore the
request.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 3af8f8e8741cc8c889bbf416ccd38a1b702917ec)

2 years agosmbd: use metadata_fsp() with SMB_VFS_FSET_DOS_ATTRIBUTES()
Ralph Boehme [Fri, 29 Jul 2022 12:56:21 +0000 (14:56 +0200)] 
smbd: use metadata_fsp() with SMB_VFS_FSET_DOS_ATTRIBUTES()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 55e55804bb2d0f21c1bbe207257bb40555f3b7a2)

2 years agosmbd: use metadata_fsp() with SMB_VFS_FGET_DOS_ATTRIBUTES()
Ralph Boehme [Fri, 29 Jul 2022 12:55:08 +0000 (14:55 +0200)] 
smbd: use metadata_fsp() with SMB_VFS_FGET_DOS_ATTRIBUTES()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 03b9ce84736d536ab2dd8a5ce1a2656e6a90c8c8)

2 years agosmbd: use metadata_fsp() with SMB_VFS_FSET_NT_ACL()
Ralph Boehme [Fri, 29 Jul 2022 12:54:07 +0000 (14:54 +0200)] 
smbd: use metadata_fsp() with SMB_VFS_FSET_NT_ACL()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 4ab29e2a345b48ebba652d5154e96adf954a6757)

2 years agosmbd: use metadata_fsp() with SMB_VFS_FGET_NT_ACL()
Ralph Boehme [Fri, 29 Jul 2022 12:49:56 +0000 (14:49 +0200)] 
smbd: use metadata_fsp() with SMB_VFS_FGET_NT_ACL()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(backported from commit c949e4b2a42423ac3851e86e489fd0c5d46d7f1f)
[slow@samba.org: context mismatch due to smbd_check_access_rights_fname() call in master]

2 years agoCI: add a test trying to delete a stream on a pathref ("stat open") handle
Ralph Boehme [Wed, 27 Jul 2022 11:37:32 +0000 (13:37 +0200)] 
CI: add a test trying to delete a stream on a pathref ("stat open") handle

When using vfs_streams_xattr, for a pathref handle of a stream the system fd
will be a fake fd created by pipe() in vfs_fake_fd().

For the following callchain we wrongly pass a stream fsp to
SMB_VFS_FGET_NT_ACL():

SMB_VFS_CREATE_FILE(..., "file:stream", ...)
=> open_file():
   if (open_fd):
   -> taking the else branch:
   -> smbd_check_access_rights_fsp(stream_fsp)
      -> SMB_VFS_FGET_NT_ACL(stream_fsp)

This is obviously wrong and can lead to strange permission errors when using
vfs_acl_xattr:

in vfs_acl_xattr we will try to read the stored ACL by calling
fgetxattr(fake-fd) which of course faild with EBADF. Now unfortunately the
vfs_acl_xattr code ignores the specific error and handles this as if there was
no ACL stored and subsequently runs the code to synthesize a default ACL
according to the setting of "acl:default acl style".

As the correct access check for streams has already been carried out by calling
check_base_file_access() from create_file_unixpath(), the above problem is not
a security issue: it can only lead to "decreased" permissions resulting in
unexpected ACCESS_DENIED errors.

The fix is obviously going to be calling
smbd_check_access_rights_fsp(stream_fsp->base_fsp).

This test verifies that deleting a file works when the stored NT ACL grants
DELETE_FILE while the basic POSIX permissions (used in the acl_xattr fallback
code) do not.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 23bc760ec5d61208c2d8778991e3d7e202eab352)

2 years agovfs_xattr_tdb: add "xattr_tdb:ignore_user_xattr" option
Ralph Boehme [Wed, 27 Jul 2022 10:47:21 +0000 (12:47 +0200)] 
vfs_xattr_tdb: add "xattr_tdb:ignore_user_xattr" option

Allows passing on "user." xattr to the backend. This can be useful for testing
specific aspects of operation on streams when "streams_xattr" is configured as
stream filesystem backend.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 92e0045d7ca7c0b94efd0244ba0e426cad0a05b6)

2 years agovfs_xattr_tdb: add a module config
Ralph Boehme [Wed, 27 Jul 2022 09:59:54 +0000 (11:59 +0200)] 
vfs_xattr_tdb: add a module config

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 451ad315a9bf32c627e1966ec30185542701c87e)

2 years agovfs_xattr_tdb: move close_xattr_db()
Ralph Boehme [Wed, 27 Jul 2022 10:43:01 +0000 (12:43 +0200)] 
vfs_xattr_tdb: move close_xattr_db()

This just makes the diff of the next commit smaller and easier to digest.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit b26dc252aaf3f4b960bdfdb6a3dfe612b89fcdd5)

2 years agosmdb: use fsp_is_alternate_stream() in open_file()
Ralph Boehme [Wed, 27 Jul 2022 14:04:24 +0000 (16:04 +0200)] 
smdb: use fsp_is_alternate_stream() in open_file()

No change in behaviour.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15126
MR: https://gitlab.com/samba-team/samba/-/merge_requests/2643

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 0d3995cec10c5fae8c8b6a1df312062e38437e6f)

2 years agosmbd: Introduce metadata_fsp()
Volker Lendecke [Fri, 11 Feb 2022 08:45:30 +0000 (09:45 +0100)] 
smbd: Introduce metadata_fsp()

Centralize the pattern

if (fsp->base_fsp != NULL) {
fsp = fsp->base_fsp;
}

with a descriptive name.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(backported from commit ac58b0b942cd73210100ee346816a0cf23900716)
[slow@samba.org: only backport the function, skip all updated callers]

2 years agosmbd: Introduce fsp_is_alternate_stream()
Volker Lendecke [Fri, 11 Feb 2022 08:37:35 +0000 (09:37 +0100)] 
smbd: Introduce fsp_is_alternate_stream()

To me this is more descriptive than "fsp->base_fsp != NULL". If this
turns out to be a performance problem, I would go and make this a
static inline in smbd/proto.h.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(backported from commit 21b380ca133417df096e2b262a5da41faff186ea)
[slow@samba.org: only backport the function, skip all changed callers]

2 years agolib:replace: Only include <sys/mount.h> on non-Linux systems
Andreas Schneider [Tue, 2 Aug 2022 05:55:46 +0000 (07:55 +0200)] 
lib:replace: Only include <sys/mount.h> on non-Linux systems

Details at:
https://sourceware.org/glibc/wiki/Release/2.36#Usage_of_.3Clinux.2Fmount.h.3E_and_.3Csys.2Fmount.h.3E

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15132

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 766151bf5b7ef95ae4c8c98b8994e5c21c5bbec0)

Autobuild-User(v4-15-test): Jule Anger <janger@samba.org>
Autobuild-Date(v4-15-test): Tue Aug 23 07:34:22 UTC 2022 on sn-devel-184

2 years agos3: smbd: Plumb close_type parameter through close_file_in_loop(), file_close_conn()
Jeremy Allison [Wed, 17 Aug 2022 18:43:47 +0000 (11:43 -0700)] 
s3: smbd: Plumb close_type parameter through close_file_in_loop(), file_close_conn()

Allows close_file_in_loop() to differentiate between SHUTDOWN_CLOSE
(previously it only used this close type) and ERROR_CLOSE - called
on error from smbXsrv_tcon_disconnect() in the error path. In that
case we want to close the fd, but not run any delete-on-close actions.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15128

Signed-off-by: Jeremy Allison <jra@samba.org>
Reivewed-by: Noel Power <npower@samba.org>
Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Thu Aug 18 14:10:18 UTC 2022 on sn-devel-184

(cherry picked from commit cf5f7b1489930f6d64c3e3512f116ccf286d4605)
[npower@samba.org Adjusted for 4.15 only file_close_conn needs to
     differentiate between SHUTDOWN_CLOSE & ERROR_CLOSE]

2 years agos3: smbd: Add "enum file_close_type close_type" parameter to file_close_conn().
Jeremy Allison [Wed, 17 Aug 2022 18:39:36 +0000 (11:39 -0700)] 
s3: smbd: Add "enum file_close_type close_type" parameter to file_close_conn().

Not yet used.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15128

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
(cherry picked from commit 7005a6354df5522d9f665fb30052c458dfc93124)
[npower@samba.org Adjusted for 4.15 filename change
         smb2-service.c -> service.c]

2 years agos3: smbd: Add "enum file_close_type close_type" parameter to close_cnum().
Jeremy Allison [Wed, 17 Aug 2022 18:35:29 +0000 (11:35 -0700)] 
s3: smbd: Add "enum file_close_type close_type" parameter to close_cnum().

Not yet used, but needed so we can differentiate between
SHUTDOWN_CLOSE and ERROR_CLOSE in smbXsrv_tcon_disconnect()
if we fail to chdir. In that case we want to close the fd,
but not run any delete-on-close actions.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15128

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
(cherry picked from commit 9203d17106c0e55a30813ff1ed76869c7581a343)
[npower@samba.org Adjusted for 4.15 filename change
         smb2-service.c -> service.c]

2 years agos3/smbd: Use after free when iterating smbd_server_connection->connections
Jeremy Allison [Fri, 22 Jul 2022 15:28:03 +0000 (16:28 +0100)] 
s3/smbd: Use after free when iterating smbd_server_connection->connections

Change conn_free() to just use a destructor. We now
catch any other places where we may have forgetten to
call conn_free() - it's implicit on talloc_free(conn).

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15128

Based on code from Noel Power <noel.power@suse.com>.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Wed Aug 17 09:54:06 UTC 2022 on sn-devel-184

(cherry picked from commit f92bacbe216d2d74ea3ccf3fe0df5c1cc9860996)

2 years agos3/smbd: Use after free when iterating smbd_server_connection->connections
Jeremy Allison [Tue, 16 Aug 2022 20:51:27 +0000 (13:51 -0700)] 
s3/smbd: Use after free when iterating smbd_server_connection->connections

In SMB2 smbd_smb2_tree_connect() we create a new conn struct
inside make_connection_smb2() then move the ownership to tcon using:

        tcon->compat = talloc_move(tcon, &compat_conn);

so the lifetime of tcon->compat is tied directly to tcon.

Inside smbXsrv_tcon_disconnect() we have:

 908                 ok = chdir_current_service(tcon->compat);
 909                 if (!ok) {
 910                         status = NT_STATUS_INTERNAL_ERROR;
 911                         DEBUG(0, ("smbXsrv_tcon_disconnect(0x%08x, '%s'): "
 912                                   "chdir_current_service() failed: %s\n",
 913                                   tcon->global->tcon_global_id,
 914                                   tcon->global->share_name,
 915                                   nt_errstr(status)));
 916                         tcon->compat = NULL;
 917                         return status;
 918                 }
 919
 920                 close_cnum(tcon->compat, vuid);
 921                 tcon->compat = NULL;

If chdir_current_service(tcon->compat) fails, we return status without ever having
called close_cnum(tcon->compat, vuid), leaving the conn pointer left in the linked
list sconn->connections.

The caller frees tcon and (by ownership) tcon->compat, still leaving the
freed tcon->compat pointer on the sconn->connections linked list.

When deadtime_fn() fires and walks the sconn->connections list it
indirects this freed pointer. We must call close_cnum() on error also.

Valgrind trace from Noel Power <noel.power@suse.com> is:

==6432== Invalid read of size 8
==6432==    at 0x52CED3A: conn_lastused_update (conn_idle.c:38)
==6432==    by 0x52CEDB1: conn_idle_all (conn_idle.c:54)
==6432==    by 0x5329971: deadtime_fn (smb2_process.c:1566)
==6432==    by 0x5DA2339: smbd_idle_event_handler (util_event.c:45)
==6432==    by 0x685F2F8: tevent_common_invoke_timer_handler (tevent_timed.c:376)

==6432==  Address 0x19074b88 is 232 bytes inside a block of size 328 free'd
==6432==    at 0x4C3451B: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==6432==    by 0x5B38521: _tc_free_internal (talloc.c:1222)
==6432==    by 0x5B39463: _tc_free_children_internal (talloc.c:1669)
==6432==    by 0x5B38404: _tc_free_internal (talloc.c:1184)
==6432==    by 0x5B39463: _tc_free_children_internal (talloc.c:1669)
==6432==    by 0x5B38404: _tc_free_internal (talloc.c:1184)
==6432==    by 0x5B39463: _tc_free_children_internal (talloc.c:1669)
==6432==    by 0x5B38404: _tc_free_internal (talloc.c:1184)
==6432==    by 0x5B39463: _tc_free_children_internal (talloc.c:1669)
==6432==    by 0x5B38404: _tc_free_internal (talloc.c:1184)
==6432==    by 0x5B385C5: _talloc_free_internal (talloc.c:1248)
==6432==    by 0x5B3988D: _talloc_free (talloc.c:1792)
==6432==    by 0x5349B22: smbd_smb2_flush_send_queue (smb2_server.c:4828)

==6432==  Block was alloc'd at
==6432==    at 0x4C332EF: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==6432==    by 0x5B378D9: __talloc_with_prefix (talloc.c:783)
==6432==    by 0x5B37A73: __talloc (talloc.c:825)
==6432==    by 0x5B37E0C: _talloc_named_const (talloc.c:982)
==6432==    by 0x5B3A8ED: _talloc_zero (talloc.c:2421)
==6432==    by 0x539873A: conn_new (conn.c:70)
==6432==    by 0x532D692: make_connection_smb2 (smb2_service.c:909)
==6432==    by 0x5352B5E: smbd_smb2_tree_connect (smb2_tcon.c:344)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15128

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
(cherry picked from commit 0bdfb5a5e60df214c088df0782c4a1bcc2a4944a)

2 years agos3:smbd: only clear LEASE_READ if there's no read lease is left
Stefan Metzmacher [Mon, 15 Aug 2022 20:45:17 +0000 (22:45 +0200)] 
s3:smbd: only clear LEASE_READ if there's no read lease is left

If contend_level2_oplocks_begin_default() skips break it's
own lease, we should not clear SHARE_MODE_LEASE_READ
in share_mode_data->flags.

Otherwise that lease won't see any lease break notifications
for writes from other clients (file handles not using the same lease
key).

So we need to count the number existing read leases (including
the one with the same lease key) in order to know it's
safe to clear SMB2_LEASE_READ/SHARE_MODE_LEASE_READ.

Otherwise the next run (likely from another client)
will get the wrong result from file_has_read_lease().

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15148

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Aug 18 19:41:33 UTC 2022 on sn-devel-184

(cherry picked from commit 96e2a82760ea06a89b7387b5cd3e864732afded3)

2 years agos4:torture/smb2: add smb2.lease.v[1,2]_bug_15148
Stefan Metzmacher [Wed, 17 Aug 2022 15:07:08 +0000 (17:07 +0200)] 
s4:torture/smb2: add smb2.lease.v[1,2]_bug_15148

This demonstrates the bug that happens with a
write to a file handle holding an R lease,
while there are other openers without any lease.

When one of the other openers writes to the file,
the R lease of the only lease holder isn't broken to NONE.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15148

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 9e5ff607eb1b9c45c8836d3cff9d51b418740b87)

2 years agos3:smbd: share_mode_flags_set() takes SMB2_LEASE_* values
Stefan Metzmacher [Mon, 15 Aug 2022 08:49:13 +0000 (10:49 +0200)] 
s3:smbd: share_mode_flags_set() takes SMB2_LEASE_* values

We currently only ever pass SMB2_LEASE_READ and both
have the same value of 0x1, so for now it's only cosmetic,
but that will change soon.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15148

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 7592aad4d7a84d0ac66a156a22af3ad77803e55c)

2 years agolibcli/smb: Set error status if 'iov' pointer is NULL
Joseph Sutton [Mon, 22 Aug 2022 04:56:46 +0000 (16:56 +1200)] 
libcli/smb: Set error status if 'iov' pointer is NULL

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15152

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Aug 22 09:03:29 UTC 2022 on sn-devel-184

(cherry picked from commit 75e03ea021afa66842b6e0dea21072b1b8026d58)

2 years agolibcli/smb: Ensure we call tevent_req_nterror() on failure
Joseph Sutton [Mon, 22 Aug 2022 03:50:02 +0000 (15:50 +1200)] 
libcli/smb: Ensure we call tevent_req_nterror() on failure

Commit 3594c3ae202688fd8aae5f7f5e20464cb23feea9 added a NULL check for
'inhdr', but it meant we didn't always call tevent_req_nterror() when we
should.

Now we handle connection errors. We now also set an error status if the
NULL check fails.

I noticed this when an ECONNRESET error from a server refusing SMB1
wasn't handled, and the client subsequently hung in epoll_wait().

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15152

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit 40d4912d841e6bcd7cd37810ef101d5f89268ee7)

2 years agos3/util/py_net.c: fix samba-tool domain join&leave segfault
Michael Tokarev [Tue, 24 May 2022 13:25:41 +0000 (16:25 +0300)] 
s3/util/py_net.c: fix samba-tool domain join&leave segfault

We process python args using PyArg_ParseTupleAndKeywords(), and use "p"
type modifier there.  According to documentation, this type modifier,
while works for a boolean type, expects an argument of type int. But in
py_net_join_member() and  py_net_leave() we use argument of type uint8_t
(keep_account, r->in.debug). So when PyArg_ParseTupleAndKeywords()
tries to assign a value to &r->in.debug, it updates subsequent, unrelated bytes
too, - which ones depends on the stack and structure layout used by the compiler.

Fix this by using an int proxy variable "debug" (of the same type) for
r->in.debug.

While at it, also ensure all variables have sensible default values.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15078

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed May 25 06:19:32 UTC 2022 on sn-devel-184

Backported-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
(backported from commit 976326fa2b6423ac5866af682605cf7584e4991a, with
 changes because 4.15 doesn't have no_dns_update, along with other
 changes that foil the patch. Also the BUG: line was added above).

Autobuild-User(v4-15-test): Jule Anger <janger@samba.org>
Autobuild-Date(v4-15-test): Mon Aug 15 09:18:25 UTC 2022 on sn-devel-184

3 years agos3:rpcclient: Goto done in cmd_samr_setuserinfo_int()
Andreas Schneider [Thu, 19 Aug 2021 10:09:28 +0000 (12:09 +0200)] 
s3:rpcclient: Goto done in cmd_samr_setuserinfo_int()

We need to free the frame or we will run into:
    smb_panic (why=0x7fa8c511aa88 "Frame not freed in order.")

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15124

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 2b32d932223e61935fc530eff1c05034ff817e21)

Autobuild-User(v4-15-test): Jule Anger <janger@samba.org>
Autobuild-Date(v4-15-test): Sun Jul 31 19:07:36 UTC 2022 on sn-devel-184

3 years agomdssvc: return all-zero policy handle if spotlight is disabled
Ralph Boehme [Wed, 25 May 2022 15:37:22 +0000 (17:37 +0200)] 
mdssvc: return all-zero policy handle if spotlight is disabled

A Mac SMB server returns an all zero handle and an empty path if Spotlight is
disabled on a share. We must return the exact same error return in order to
trigger client-side searching.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=15086
pcap: https://www.samba.org/~slow/pcaps/mac-bigsur-smbserver-spotlight-disabled.pcapng.gz

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Tue Jul 12 15:42:52 UTC 2022 on sn-devel-184

(cherry picked from commit 23e6e50c0f82b997dea4a67069f65252045514c0)

3 years agoCI: fix check for correct mdsvc resonse when connecting to a share with Spotlight...
Ralph Boehme [Tue, 7 Jun 2022 07:52:53 +0000 (09:52 +0200)] 
CI: fix check for correct mdsvc resonse when connecting to a share with Spotlight disabled

A Mac SMB server returns an all zero handle and an empty path if Spotlight is
disabled on a share. We must return the exact same error return in order to
trigger client-side searching.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=15086
pcap: https://www.samba.org/~slow/pcaps/mac-bigsur-smbserver-spotlight-disabled.pcapng.gz

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
(backported from commit 8e997bd6e9250499fd8e569d708edc29e304a0e8)
[slow@samba.org: unrelated test changes in tests.py]

3 years agomdssvc: convert mds_init_ctx() to return NTSTATUS
Ralph Boehme [Wed, 25 May 2022 15:26:29 +0000 (17:26 +0200)] 
mdssvc: convert mds_init_ctx() to return NTSTATUS

No change in behavour. In preperation for returning a special error to signal
the caller that spotlight is disabled for a share.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=15086

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
(backported from commit 72468166b250de26747071cbbf3613c016ebfd42)
[slow@samba.org: use p->session_info as mds_init_ctx() arg]

3 years agoVERSION: Bump version up to Samba 4.15.10...
Jule Anger [Wed, 27 Jul 2022 10:45:47 +0000 (12:45 +0200)] 
VERSION: Bump version up to Samba 4.15.10...

and re-enable GIT_SNAPSHOT.

Signed-off-by: Jule Anger <janger@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
3 years agoMerge tag 'samba-4.15.9' into v4-15-test
Jule Anger [Wed, 27 Jul 2022 10:43:19 +0000 (12:43 +0200)] 
Merge tag 'samba-4.15.9' into v4-15-test

samba: tag release samba-4.15.9

Signed-off-by: Jule Anger <janger@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
3 years agoVERSION: Disable GIT_SNAPSHOT for the 4.15.9 release. samba-4.15.9
Jule Anger [Sun, 24 Jul 2022 09:47:09 +0000 (11:47 +0200)] 
VERSION: Disable GIT_SNAPSHOT for the 4.15.9 release.

Signed-off-by: Jule Anger <janger@samba.org>
3 years agoWHATSNEW: Add release notes for Samba 4.15.9.
Jule Anger [Sun, 24 Jul 2022 09:18:25 +0000 (11:18 +0200)] 
WHATSNEW: Add release notes for Samba 4.15.9.

Signed-off-by: Jule Anger <janger@samba.org>
3 years agoCVE-2022-32742: s3: smbd: Harden the smbreq_bufrem() macro.
Jeremy Allison [Wed, 8 Jun 2022 20:50:51 +0000 (13:50 -0700)] 
CVE-2022-32742: s3: smbd: Harden the smbreq_bufrem() macro.

Fixes the raw.write.bad-write test.

NB. We need the two (==0) changes in source3/smbd/reply.c
as the gcc optimizer now knows that the return from
smbreq_bufrem() can never be less than zero.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15085

Remove knownfail.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
3 years agoCVE-2022-32742: s4: torture: Add raw.write.bad-write test.
Jeremy Allison [Tue, 7 Jun 2022 16:40:45 +0000 (09:40 -0700)] 
CVE-2022-32742: s4: torture: Add raw.write.bad-write test.

Reproduces the test code in:

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15085

Add knownfail.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
3 years agoCVE-2022-2031 testprogs: Add test for short-lived ticket across an incoming trust
Joseph Sutton [Thu, 23 Jun 2022 01:59:11 +0000 (13:59 +1200)] 
CVE-2022-2031 testprogs: Add test for short-lived ticket across an incoming trust

We ensure that the KDC does not reject a TGS-REQ with our short-lived
TGT over an incoming trust.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
3 years agoCVE-2022-2031 s4:kpasswd: Do not accept TGTs as kpasswd tickets
Joseph Sutton [Fri, 10 Jun 2022 07:18:53 +0000 (19:18 +1200)] 
CVE-2022-2031 s4:kpasswd: Do not accept TGTs as kpasswd tickets

If TGTs can be used as kpasswd tickets, the two-minute lifetime of a
authentic kpasswd ticket may be bypassed. Furthermore, kpasswd tickets
are not supposed to be cached, but using this flaw, a stolen credentials
cache containing a TGT may be used to change that account's password,
and thus is made more valuable to an attacker.

Since all TGTs should be issued with a REQUESTER_SID PAC buffer, and
service tickets without it, we assert the absence of this buffer to
ensure we're not accepting a TGT.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed knownfail conflicts]

[jsutton@samba.org Fixed knownfail conflicts]

3 years agoCVE-2022-2031 s4:auth: Use PAC to determine whether ticket is a TGT
Joseph Sutton [Fri, 10 Jun 2022 07:18:35 +0000 (19:18 +1200)] 
CVE-2022-2031 s4:auth: Use PAC to determine whether ticket is a TGT

We use the presence or absence of a REQUESTER_SID PAC buffer to
determine whether the ticket is a TGT. We will later use this to reject
TGTs where a service ticket is expected.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 auth: Add ticket type field to auth_user_info_dc and auth_session_info
Joseph Sutton [Fri, 10 Jun 2022 07:18:07 +0000 (19:18 +1200)] 
CVE-2022-2031 auth: Add ticket type field to auth_user_info_dc and auth_session_info

This field may be used to convey whether we were provided with a TGT or
a non-TGT. We ensure both structures are zeroed out to avoid incorrect
results being produced by an uninitialised field.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Add test that we cannot provide a TGT to kpasswd
Joseph Sutton [Fri, 10 Jun 2022 07:17:11 +0000 (19:17 +1200)] 
CVE-2022-2031 tests/krb5: Add test that we cannot provide a TGT to kpasswd

The kpasswd service should require a kpasswd service ticket, and
disallow TGTs.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed knownfail conflicts]

[jsutton@samba.org Fixed knownfail conflicts]

3 years agoCVE-2022-32744 s4:kpasswd: Ensure we pass the kpasswd server principal into krb5_rd_r...
Joseph Sutton [Mon, 30 May 2022 07:16:02 +0000 (19:16 +1200)] 
CVE-2022-32744 s4:kpasswd: Ensure we pass the kpasswd server principal into krb5_rd_req_ctx()

To ensure that, when decrypting the kpasswd ticket, we look up the
correct principal and don't trust the sname from the ticket, we should
pass the principal name of the kpasswd service into krb5_rd_req_ctx().
However, gensec_krb5_update_internal() will pass in NULL unless the
principal in our credentials is CRED_SPECIFIED.

At present, our principal will be considered obtained as CRED_SMB_CONF
(from the cli_credentials_set_conf() a few lines up), so we explicitly
set the realm again, but this time as CRED_SPECIFIED. Now the value of
server_in_keytab that we provide to smb_krb5_rd_req_decoded() will not
be NULL.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Removed knownfail as KDC no longer panics]

3 years agoCVE-2022-32744 s4:kdc: Modify HDB plugin to only look up kpasswd principal
Joseph Sutton [Thu, 26 May 2022 04:39:20 +0000 (16:39 +1200)] 
CVE-2022-32744 s4:kdc: Modify HDB plugin to only look up kpasswd principal

This plugin is now only used by the kpasswd service. Thus, ensuring we
only look up the kadmin/changepw principal means we can't be fooled into
accepting tickets for other service principals. We make sure not to
specify a specific kvno, to ensure that we do not accept RODC-issued
tickets.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed knownfail conflicts]

[jsutton@samba.org Renamed entry to entry_ex; fixed knownfail conflicts;
 retained knownfail for test_kpasswd_from_rodc which now causes the KDC
 to panic]

3 years agos4:kdc: Remove kadmin mode from HDB plugin
Joseph Sutton [Wed, 8 Jun 2022 01:53:29 +0000 (13:53 +1200)] 
s4:kdc: Remove kadmin mode from HDB plugin

It appears we no longer require it.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-32744 s4:kdc: Rename keytab_name -> kpasswd_keytab_name
Joseph Sutton [Thu, 26 May 2022 04:36:30 +0000 (16:36 +1200)] 
CVE-2022-32744 s4:kdc: Rename keytab_name -> kpasswd_keytab_name

This makes explicitly clear the purpose of this keytab.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflicts due to lacking HDBGET support]

3 years agoCVE-2022-2031 s4:kdc: Don't use strncmp to compare principal components
Joseph Sutton [Wed, 25 May 2022 08:00:55 +0000 (20:00 +1200)] 
CVE-2022-2031 s4:kdc: Don't use strncmp to compare principal components

We would only compare the first 'n' characters, where 'n' is the length
of the principal component string, so 'k@REALM' would erroneously be
considered equal to 'krbtgt@REALM'.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Test truncated forms of server principals
Joseph Sutton [Tue, 14 Jun 2022 03:23:55 +0000 (15:23 +1200)] 
CVE-2022-2031 tests/krb5: Test truncated forms of server principals

We should not be able to use krb@REALM instead of krbtgt@REALM.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflicts due to having older version of
 _run_as_req_enc_timestamp()]

3 years agoCVE-2022-2031 s4:kdc: Reject tickets during the last two minutes of their life
Joseph Sutton [Mon, 30 May 2022 07:18:17 +0000 (19:18 +1200)] 
CVE-2022-2031 s4:kdc: Reject tickets during the last two minutes of their life

For Heimdal, this now matches the behaviour of Windows. The object of
this requirement is to ensure we don't allow kpasswd tickets, not having
a lifetime of more than two minutes, to be passed off as TGTs.

An existing requirement for TGTs to contain a REQUESTER_SID PAC buffer
suffices to prevent kpasswd ticket misuse, so this is just an additional
precaution on top.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org As we don't have access to the ticket or the request
 in the plugin, rewrote check directly in Heimdal KDC]

3 years agoCVE-2022-2031 s4:kdc: Limit kpasswd ticket lifetime to two minutes or less
Joseph Sutton [Tue, 24 May 2022 05:53:49 +0000 (17:53 +1200)] 
CVE-2022-2031 s4:kdc: Limit kpasswd ticket lifetime to two minutes or less

This matches the behaviour of Windows.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Adapted entry to entry_ex->entry; included
 samba_kdc.h header file]

3 years agoCVE-2022-2031 s4:kdc: Fix canonicalisation of kadmin/changepw principal
Joseph Sutton [Wed, 18 May 2022 04:56:01 +0000 (16:56 +1200)] 
CVE-2022-2031 s4:kdc: Fix canonicalisation of kadmin/changepw principal

Since this principal goes through the samba_kdc_fetch_server() path,
setting the canonicalisation flag would cause the principal to be
replaced with the sAMAccountName; this meant requests to
kadmin/changepw@REALM would result in a ticket to krbtgt@REALM. Now we
properly handle canonicalisation for the kadmin/changepw principal.

View with 'git show -b'.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Pair-Programmed-With: Andreas Schneider <asn@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Adapted entry to entry_ex->entry; removed MIT KDC
 1.20-specific knownfails]

3 years agoCVE-2022-2031 s4:kdc: Refactor samba_kdc_get_entry_principal()
Joseph Sutton [Wed, 25 May 2022 05:19:58 +0000 (17:19 +1200)] 
CVE-2022-2031 s4:kdc: Refactor samba_kdc_get_entry_principal()

This eliminates some duplicate branches.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Pair-Programmed-With: Andreas Schneider <asn@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 s4:kdc: Split out a samba_kdc_get_entry_principal() function
Joseph Sutton [Wed, 18 May 2022 04:56:01 +0000 (16:56 +1200)] 
CVE-2022-2031 s4:kdc: Split out a samba_kdc_get_entry_principal() function

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Adapted entry to entry_ex->entry]

[jsutton@samba.org Fixed conflicts caused by superfluous whitespace]

3 years agoCVE-2022-2031 s4:kdc: Implement is_kadmin_changepw() helper function
Andreas Schneider [Tue, 24 May 2022 07:54:18 +0000 (09:54 +0200)] 
CVE-2022-2031 s4:kdc: Implement is_kadmin_changepw() helper function

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
[jsutton@samba.org Adapted entry to entry_ex->entry]

3 years agoCVE-2022-2031 testprogs: Add kadmin/changepw canonicalization test with MIT kpasswd
Andreas Schneider [Thu, 19 May 2022 14:35:28 +0000 (16:35 +0200)] 
CVE-2022-2031 testprogs: Add kadmin/changepw canonicalization test with MIT kpasswd

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
3 years agoCVE-2022-2031 testprogs: Fix auth with smbclient and krb5 ccache
Andreas Schneider [Tue, 24 May 2022 08:17:00 +0000 (10:17 +0200)] 
CVE-2022-2031 testprogs: Fix auth with smbclient and krb5 ccache

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
3 years agos4:kpasswd: Restructure code for clarity
Joseph Sutton [Wed, 18 May 2022 05:11:49 +0000 (17:11 +1200)] 
s4:kpasswd: Restructure code for clarity

View with 'git show -b'.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 s4:kpasswd: Require an initial ticket
Joseph Sutton [Wed, 18 May 2022 04:52:41 +0000 (16:52 +1200)] 
CVE-2022-2031 s4:kpasswd: Require an initial ticket

Ensure that for password changes the client uses an AS-REQ to get the
ticket to kpasswd, and not a TGS-REQ.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Removed MIT KDC 1.20-specific knownfails]

3 years agoCVE-2022-2031 gensec_krb5: Add helper function to check if client sent an initial...
Joseph Sutton [Wed, 18 May 2022 04:06:31 +0000 (16:06 +1200)] 
CVE-2022-2031 gensec_krb5: Add helper function to check if client sent an initial ticket

This will be used in the kpasswd service to ensure that the client has
an initial ticket to kadmin/changepw, and not a service ticket.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 s4:kpasswd: Return a kpasswd error code in KRB-ERROR
Joseph Sutton [Wed, 18 May 2022 04:49:43 +0000 (16:49 +1200)] 
CVE-2022-2031 s4:kpasswd: Return a kpasswd error code in KRB-ERROR

If we attempt to return an error code outside of Heimdal's allowed range
[KRB5KDC_ERR_NONE, KRB5_ERR_RCSID), it will be replaced with a GENERIC
error, and the error text will be set to the meaningless result of
krb5_get_error_message(). Avoid this by ensuring the error code is in
the correct range.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 lib:krb5_wrap: Generate valid error codes in smb_krb5_mk_error()
Joseph Sutton [Fri, 27 May 2022 07:29:34 +0000 (19:29 +1200)] 
CVE-2022-2031 lib:krb5_wrap: Generate valid error codes in smb_krb5_mk_error()

The error code passed in will be an offset from ERROR_TABLE_BASE_krb5,
so we need to subtract that before creating the error. Heimdal does this
internally, so it isn't needed there.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 s4:kpasswd: Don't return AP-REP on failure
Joseph Sutton [Wed, 18 May 2022 04:48:59 +0000 (16:48 +1200)] 
CVE-2022-2031 s4:kpasswd: Don't return AP-REP on failure

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Removed MIT KDC 1.20-specific knownfails]

3 years agoCVE-2022-2031 s4:kpasswd: Correctly generate error strings
Joseph Sutton [Fri, 27 May 2022 07:21:06 +0000 (19:21 +1200)] 
CVE-2022-2031 s4:kpasswd: Correctly generate error strings

The error_data we create already has an explicit length, and should not
be zero-terminated, so we omit the trailing null byte. Previously,
Heimdal builds would leave a superfluous trailing null byte on error
strings, while MIT builds would omit the final character.

The two bytes added to the string's length are for the prepended error
code.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Removed MIT KDC 1.20-specific knownfails]

3 years agoCVE-2022-2031 tests/krb5: Add tests for kpasswd service
Joseph Sutton [Tue, 24 May 2022 07:59:16 +0000 (19:59 +1200)] 
CVE-2022-2031 tests/krb5: Add tests for kpasswd service

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflicts in usage.py and knownfails; removed
 MIT KDC 1.20-specific knownfails as it's not supported]

[jsutton@samba.org Fixed conflicts in usage.py, knownfails, and
 tests.py]

3 years agoCVE-2022-32744 selftest: Specify Administrator kvno for Python krb5 tests
Joseph Sutton [Thu, 26 May 2022 04:35:03 +0000 (16:35 +1200)] 
CVE-2022-32744 selftest: Specify Administrator kvno for Python krb5 tests

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Add kpasswd_exchange() method
Joseph Sutton [Tue, 24 May 2022 07:57:57 +0000 (19:57 +1200)] 
CVE-2022-2031 tests/krb5: Add kpasswd_exchange() method

Now we can test the kpasswd service from Python.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflicts in imports]

3 years agoCVE-2022-2031 tests/krb5: Allow requesting a TGT to a different sname and realm
Joseph Sutton [Tue, 24 May 2022 07:34:59 +0000 (19:34 +1200)] 
CVE-2022-2031 tests/krb5: Allow requesting a TGT to a different sname and realm

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflict due to lacking rc4_support parameter]

[jsutton@samba.org Fixed conflicts due to lacking client_name_type and
 expected_cname parameters]

3 years agotests/krb5: Add option for creating accounts with expired passwords
Joseph Sutton [Tue, 24 May 2022 07:30:12 +0000 (19:30 +1200)] 
tests/krb5: Add option for creating accounts with expired passwords

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agotests/krb5: Fix enum typo
Joseph Sutton [Tue, 24 May 2022 07:26:56 +0000 (19:26 +1200)] 
tests/krb5: Fix enum typo

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Add methods to send and receive generic messages
Joseph Sutton [Tue, 24 May 2022 07:20:28 +0000 (19:20 +1200)] 
CVE-2022-2031 tests/krb5: Add methods to send and receive generic messages

This allows us to send and receive kpasswd messages, while avoiding the
existing logic for encoding and decoding other Kerberos message types.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Add 'port' parameter to connect()
Joseph Sutton [Tue, 24 May 2022 07:21:37 +0000 (19:21 +1200)] 
CVE-2022-2031 tests/krb5: Add 'port' parameter to connect()

This allows us to use the kpasswd port, 464.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Add methods to create ASN1 kpasswd structures
Joseph Sutton [Tue, 24 May 2022 07:17:45 +0000 (19:17 +1200)] 
CVE-2022-2031 tests/krb5: Add methods to create ASN1 kpasswd structures

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Add new definitions for kpasswd
Joseph Sutton [Tue, 24 May 2022 07:13:54 +0000 (19:13 +1200)] 
CVE-2022-2031 tests/krb5: Add new definitions for kpasswd

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-32744 tests/krb5: Correctly calculate salt for pre-existing accounts
Joseph Sutton [Tue, 24 May 2022 07:06:53 +0000 (19:06 +1200)] 
CVE-2022-32744 tests/krb5: Correctly calculate salt for pre-existing accounts

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 tests/krb5: Split out _make_tgs_request()
Joseph Sutton [Thu, 26 May 2022 08:52:04 +0000 (20:52 +1200)] 
CVE-2022-2031 tests/krb5: Split out _make_tgs_request()

This allows us to make use of it in other tests.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
[jsutton@samba.org Fixed conflicts due to having older version of
 _make_tgs_request()]

3 years agoCVE-2022-32744 tests/krb5: Correctly handle specifying account kvno
Joseph Sutton [Thu, 26 May 2022 04:34:01 +0000 (16:34 +1200)] 
CVE-2022-32744 tests/krb5: Correctly handle specifying account kvno

The environment variable is a string, but we expect an integer.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 s4:kpasswd: Add MIT fallback for decoding setpw structure
Joseph Sutton [Mon, 30 May 2022 07:17:41 +0000 (19:17 +1200)] 
CVE-2022-2031 s4:kpasswd: Add MIT fallback for decoding setpw structure

The target principal and realm fields of the setpw structure are
supposed to be optional, but in MIT Kerberos they are mandatory. For
better compatibility and ease of testing, fall back to parsing the
simpler (containing only the new password) structure if the MIT function
fails to decode it.

Although the target principal and realm fields should be optional, one
is not supposed to specified without the other, so we don't have to deal
with the case where only one is specified.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoCVE-2022-2031 s4:kpasswd: Account for missing target principal
Joseph Sutton [Fri, 27 May 2022 07:17:02 +0000 (19:17 +1200)] 
CVE-2022-2031 s4:kpasswd: Account for missing target principal

This field is supposed to be optional.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
3 years agoheimdal:kdc: Accommodate NULL data parameter in krb5_pac_get_buffer()
Joseph Sutton [Wed, 15 Jun 2022 22:33:29 +0000 (10:33 +1200)] 
heimdal:kdc: Accommodate NULL data parameter in krb5_pac_get_buffer()

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
3 years agoCVE-2022-2031 s4:kdc: Add MIT support for ATTRIBUTES_INFO and REQUESTER_SID PAC buffers
Joseph Sutton [Wed, 15 Jun 2022 07:37:39 +0000 (19:37 +1200)] 
CVE-2022-2031 s4:kdc: Add MIT support for ATTRIBUTES_INFO and REQUESTER_SID PAC buffers

So that we do not confuse TGTs and kpasswd tickets, it is critical to
check that the REQUESTER_SID buffer exists in TGTs, and to ensure that
it is not propagated to service tickets.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
[jsutton@samba.org Brought in changes to add ATTRIBUTES_INFO and
 REQUESTER_SID buffers to new PACs, and updated knownfails]

3 years agoselftest: Simplify krb5 test environments
Joseph Sutton [Fri, 4 Mar 2022 03:57:27 +0000 (16:57 +1300)] 
selftest: Simplify krb5 test environments

It's not necessary to repeat the required environment variables for
every test.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
(cherry picked from commit e729606631b5bfaf7c4ad8c1e70697adf8274777)

[jsutton@samba.org Fixed conflicts caused by missing check_cname,
 check_padata and fast_support variables]

3 years agotests/krb5: Add helper function to modify ticket flags
Joseph Sutton [Mon, 7 Feb 2022 23:15:36 +0000 (12:15 +1300)] 
tests/krb5: Add helper function to modify ticket flags

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit ded5115f73dff5b8b2f3212988e03f9dbe0c2aa3)

3 years agotests/krb5: Correctly determine whether tickets are service tickets
Joseph Sutton [Tue, 14 Dec 2021 06:16:00 +0000 (19:16 +1300)] 
tests/krb5: Correctly determine whether tickets are service tickets

Previously we expected tickets to contain a ticket checksum if the sname
was not the krbtgt. However, the ticket checksum should not be present
if we are performing an AS-REQ to our own account. Now we determine a
ticket is a service ticket only if the request is also a TGS-REQ.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 100be7eb8e70ba270a8e92957a5e47466160a901)

3 years agokdc: Canonicalize realm for enterprise principals
Joseph Sutton [Tue, 7 Dec 2021 00:15:38 +0000 (13:15 +1300)] 
kdc: Canonicalize realm for enterprise principals

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Dec  7 04:54:35 UTC 2021 on sn-devel-184

(cherry picked from commit 8bd7b316bd61ef35f6e0baa0b65f0ef00910112c)

3 years agokdc: Require that PAC_REQUESTER_SID buffer is present for TGTs
Joseph Sutton [Wed, 24 Nov 2021 07:41:54 +0000 (20:41 +1300)] 
kdc: Require that PAC_REQUESTER_SID buffer is present for TGTs

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Nov 30 03:33:26 UTC 2021 on sn-devel-184

(cherry picked from commit 38c5bad4a853b19fe9a51fb059e150b153c4632a)

3 years agoheimdal:kdc: Do not generate extra PAC buffers for S4U2Self service ticket
Joseph Sutton [Tue, 23 Nov 2021 06:38:35 +0000 (19:38 +1300)] 
heimdal:kdc: Do not generate extra PAC buffers for S4U2Self service ticket

Normally samba_wdc_get_pac() is used to generate the PAC for a TGT, but
when generating a service ticket for S4U2Self, we want to avoid adding
the additional PAC_ATTRIBUTES_INFO and PAC_REQUESTER_SID buffers.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 9bd26804852d957f81cb311e5142f9190f9afa65)

3 years agoselftest: Properly check extra PAC buffers with Heimdal
Joseph Sutton [Wed, 24 Nov 2021 20:29:42 +0000 (09:29 +1300)] 
selftest: Properly check extra PAC buffers with Heimdal

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit ee4aa21c487fa80082a548b2e4f115a791e30340)

3 years agoheimdal:kdc: Always generate a PAC for S4U2Self
Joseph Sutton [Tue, 23 Nov 2021 04:30:50 +0000 (17:30 +1300)] 
heimdal:kdc: Always generate a PAC for S4U2Self

If we decided not to put a PAC into the ticket, mspac would be NULL
here, and the resulting ticket would not contain a PAC. This could
happen if there was a request to omit the PAC or the service did not
require authorization data. Ensure that we always generate a PAC.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 1f4f3018c5001b289b91959a72d00575c8fc0ac1)

3 years agotests/krb5: Add a test for S4U2Self with no authorization data required
Joseph Sutton [Wed, 24 Nov 2021 23:46:40 +0000 (12:46 +1300)] 
tests/krb5: Add a test for S4U2Self with no authorization data required

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 192d6edfe912105ec344dc554f872a24c03540a3)

3 years agokdc: Remove PAC_TYPE_ATTRIBUTES_INFO from RODC-issued tickets
Joseph Sutton [Wed, 24 Nov 2021 21:53:49 +0000 (10:53 +1300)] 
kdc: Remove PAC_TYPE_ATTRIBUTES_INFO from RODC-issued tickets

Windows ignores PAC_TYPE_ATTRIBUTES_INFO and always issues a PAC when
presented with an RODC-issued TGT. By removing this PAC buffer from
RODC-issued tickets, we ensure that an RODC-issued ticket will still
result in a PAC if it is first renewed or validated by the main DC.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 4b60e9516497c2e7f1545fe50887d0336b9893f2)

3 years agokdc: Don't include extra PAC buffers in service tickets
Joseph Sutton [Wed, 24 Nov 2021 07:42:22 +0000 (20:42 +1300)] 
kdc: Don't include extra PAC buffers in service tickets

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 90025b6a4d250a15c0f988a9a9150ecfb63069ef)

3 years agoRevert "CVE-2020-25719 s4/torture: Expect additional PAC buffers"
Joseph Sutton [Thu, 25 Nov 2021 00:24:57 +0000 (13:24 +1300)] 
Revert "CVE-2020-25719 s4/torture: Expect additional PAC buffers"

This reverts commit fa4c9bcefdeed0a7106aab84df20b02435febc1f.

We should not be generating these additional PAC buffers for service
tickets, only for TGTs.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit e61983c7f2c4daade83b237efb990d0c0645b3a3)

3 years agotests/krb5: Add tests for renewal and validation of RODC TGTs with PAC requests
Joseph Sutton [Wed, 24 Nov 2021 21:32:44 +0000 (10:32 +1300)] 
tests/krb5: Add tests for renewal and validation of RODC TGTs with PAC requests

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 73a48063469205099f02efdf3b8f0f1040dc7a3d)

3 years agokdc: Always add the PAC if the header TGT is from an RODC
Joseph Sutton [Tue, 23 Nov 2021 07:15:41 +0000 (20:15 +1300)] 
kdc: Always add the PAC if the header TGT is from an RODC

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 690a00a40c0a3f77da6e4dca42b630f2793a98b8)

3 years agokdc: Match Windows error code for mismatching sname
Joseph Sutton [Tue, 23 Nov 2021 07:00:07 +0000 (20:00 +1300)] 
kdc: Match Windows error code for mismatching sname

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit b6a25f5f016aef39c3b1d7be8b3ecfe021c03c83)

3 years agotests/krb5: Add test for S4U2Self with wrong sname
Joseph Sutton [Wed, 24 Nov 2021 21:05:17 +0000 (10:05 +1300)] 
tests/krb5: Add test for S4U2Self with wrong sname

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit bac5f75059450898937be891e863826e1350b62c)

3 years agokdc: Adjust SID mismatch error code to match Windows
Joseph Sutton [Wed, 24 Nov 2021 07:41:45 +0000 (20:41 +1300)] 
kdc: Adjust SID mismatch error code to match Windows

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit d5d22bf84a71492342287e54b555c9f024e7e71c)

3 years agoheimdal:kdc: Adjust no-PAC error code to match Windows
Joseph Sutton [Wed, 24 Nov 2021 07:41:34 +0000 (20:41 +1300)] 
heimdal:kdc: Adjust no-PAC error code to match Windows

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit f7a2fef8f49a86f63c3dc2f6a2d7d979fb53238a)

3 years agos4:torture: Fix typo
Joseph Sutton [Thu, 18 Nov 2021 03:22:34 +0000 (16:22 +1300)] 
s4:torture: Fix typo

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 9cfb88ba04818b5e9cec3c96422e8e4a3080d490)

3 years agoheimdal:kdc: Fix error message for user-to-user
Joseph Sutton [Thu, 18 Nov 2021 00:14:51 +0000 (13:14 +1300)] 
heimdal:kdc: Fix error message for user-to-user

We were checking the wrong variable to see whether a PAC was found or not.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 11fb9476ad3c09415d12b3cdf7934c293cbefcb2)

3 years agotests/krb5: Add comments for tests that fail against Windows
Joseph Sutton [Wed, 24 Nov 2021 02:32:32 +0000 (15:32 +1300)] 
tests/krb5: Add comments for tests that fail against Windows

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 749349efab9b401d33a4fc286473a924364a41c9)

3 years agotests/krb5: Add tests for validation with requester SID PAC buffer
Joseph Sutton [Wed, 24 Nov 2021 00:10:52 +0000 (13:10 +1300)] 
tests/krb5: Add tests for validation with requester SID PAC buffer

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit ca80c47406e0f2b6fac2c55229306e21ccef9745)