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Commit Graph

60957 Commits

Author SHA1 Message Date
Pavel Filipenský
928ce91eb7 s3:winbindd: Skip check_negative_conn_cache() if saf_servername == NULL
saf_servername can be NULL even after calling saf_fetch().  Avoid
calling check_negative_conn_cache() like it was before commit 0fcf0012

Signed-off-by: Pavel Filipenský <pfilipensky@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-11 15:37:28 +00:00
Volker Lendecke
6071220fcb libcli: Make debug_unix_user_token() use just one DEBUG statement
This avoids messing up the debug logs when multiple processes are
writing into the same file.

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 Oct 11 00:24:58 UTC 2023 on atb-devel-224
2023-10-11 00:24:58 +00:00
Volker Lendecke
a77c6b5939 smbd: is_in_path() deals with a NULL namelist
Don't need to check in the callers

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
a8dd943c11 smbd: Remove a pointless NULL check
boolean short-circuiting already gives us this condition.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
5130ade688 smbd: Use SMB_VFS_FSTATAT() instead of SMB_LSTAT()
Use the dirfsp when we have it available

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
d4a05fc145 smbd: Fix a typo
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
9978953786 vfs: Fix a typo
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
94dcbed38d smbd: Modernize two DBG statements
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
e8570f73ac smbd: Reduce indentation, remove a nested if-statement
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
0b38cd8ea7 smbd: Avoid casts in a DBG statement
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
446ae3f8e7 rpc_server3: Avoid a pointless DEBUGADD
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
be1cf356ad rpc_server3: Remove a duplicate comment
Review with "git sh -U20"

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
770f279ab7 pdb: Slightly simplify pdb_samba_dsdb_set_trusteddom_pw()
This is easier to read to me.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
8cd296e42d Remove IS_DOS_*() macros
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
b48d7a8e34 libsmb: Expand IS_DOS_DIR() macro
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
29895176d2 smbd: Expand IS_DOS_READONLY() macros
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
2829577594 smbd: Expand IS_DOS_ARCHIVE() macros
Together with the "dosmode | FILE_ATTRIBUTE_ARCHIVE" a line below this
is more obvious to me.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
226a7c7bc3 libsmb: Expand IS_DOS_* macros
To me these macros hide more than they clarify.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Volker Lendecke
817f68e4a1 smbd: Expand IS_DOS_* macros
To me these macros hide more than they clarify. In a lot of places we
already directly check for these flags without those macros. Unify
that.

Also, check for the dosmode bits first, lp_map_* is a bit more effort
to evaluate.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 23:23:40 +00:00
Andrew Bartlett
1fbf08e812 CVE-2023-42670 s3-rpc_server: Remove cross-check with "samba" EPM lookup
We now have ensured that no conflicting services attempt to start
so we do not need the runtime lookup and so avoid the risk that
the lookup may fail.

This means that any duplicates will be noticed early not just
in a race condition.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15473

Signed-off-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Jule Anger <janger@samba.org>
Autobuild-Date(master): Tue Oct 10 15:47:04 UTC 2023 on atb-devel-224
2023-10-10 15:47:04 +00:00
Andrew Bartlett
11ece30afa CVE-2023-42670 s3-rpc_server: Strictly refuse to start RPC servers in conflict with AD DC
Just as we refuse to start NETLOGON except on the DC, we must refuse
to start all of the RPC services that are provided by the AD DC.

Most critically of course this applies to netlogon, lsa and samr.

This avoids the supression of these services being the result of a
runtime epmapper lookup, as if that fails these services can disrupt
service to end users by listening on the same socket as the AD DC
servers.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15473

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
2023-10-10 14:49:40 +00:00
Andrew Bartlett
a9c32f929b CVE-2023-42669 s3-rpc_server: Disable rpcecho for consistency with the AD DC
The rpcecho server in source3 does have samba the sleep() feature that
the s4 version has, but the task architecture is different, so there
is not the same impact.  Hoever equally this is not something that
should be enabled on production builds of Samba, so restrict to
selftest builds.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15474

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
2023-10-10 14:49:40 +00:00
Andrew Bartlett
3cf1beed5d CVE-2023-42669 s4-rpc_server: Disable rpcecho server by default
The rpcecho server is useful in development and testing, but should never
have been allowed into production, as it includes the facility to
do a blocking sleep() in the single-threaded rpc worker.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15474

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
2023-10-10 14:49:39 +00:00
Ralph Boehme
b70f4f8681 CVE-2023-4091: smbd: use open_access_mask for access check in open_file()
If the client requested FILE_OVERWRITE[_IF], we're implicitly adding
FILE_WRITE_DATA to the open_access_mask in open_file_ntcreate(), but for the
access check we're using access_mask which doesn't contain the additional
right, which means we can end up truncating a file for which the user has
only read-only access via an SD.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15439

Signed-off-by: Ralph Boehme <slow@samba.org>
2023-10-10 14:49:39 +00:00
Jeremy Allison
5ed25efb07 CVE-2023-3961:s3: smbd: Remove the SMB_ASSERT() that crashes on bad pipenames.
We correctly handle this and just return ENOENT (NT_STATUS_OBJECT_NAME_NOT_FOUND).

Remove knowfail.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15422

Signed-off-by: Jeremy Allison <jra@samba.org>
2023-10-10 14:49:39 +00:00
Jeremy Allison
c39f90a124 CVE-2023-3961:s3:torture: Add test SMB2-INVALID-PIPENAME to show we allow bad pipenames with unix separators through to the UNIX domain socket code.
The raw SMB2-INVALID-PIPENAME test passes against Windows 2022,
as it just returns NT_STATUS_OBJECT_NAME_NOT_FOUND.

Add the knownfail.

BUG:https://bugzilla.samba.org/show_bug.cgi?id=15422

Signed-off-by: Jeremy Allison <jra@samba.org>
2023-10-10 14:49:39 +00:00
Jeremy Allison
ae476e1c28 CVE-2023-3961:s3:smbd: Catch any incoming pipe path that could exit socket_dir.
For now, SMB_ASSERT() to exit the server. We will remove
this once the test code is in place.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15422

Signed-off-by: Jeremy Allison <jra@samba.org>
2023-10-10 14:49:39 +00:00
Ralph Boehme
633a3ee689 s3: smbd: Ignore fstat() error on deleted stream in fd_close().
In the fd_close() fsp->fsp_flags.fstat_before_close code path.

If this is a stream and delete-on-close was set, the
backing object (an xattr from streams_xattr) might
already be deleted so fstat() fails with
NT_STATUS_NOT_FOUND. So if fsp refers to a stream we
ignore the error and only bail for normal files where
an fstat() should still work. NB. We cannot use
fsp_is_alternate_stream(fsp) for this as the base_fsp
has already been closed at this point and so the value
fsp_is_alternate_stream() checks for is already NULL.

Remove knownfail.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=15487

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue Oct 10 09:39:27 UTC 2023 on atb-devel-224
2023-10-10 09:39:27 +00:00
Volker Lendecke
340f0420bd pylibsmb: Add SMB2_CLOSE_FLAGS_FULL_INFORMATION constant
Bug: https://bugzilla.samba.org/show_bug.cgi?id=15487

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 08:19:29 +00:00
Volker Lendecke
c4047443a5 libsmb: Pass "flags" through cli_close_send() and pylibsmb
Bug: https://bugzilla.samba.org/show_bug.cgi?id=15487

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 08:19:29 +00:00
Volker Lendecke
f72ef19cf5 libsmb: Add "flags" to cli_smb2_close_fnum_send()
Bug: https://bugzilla.samba.org/show_bug.cgi?id=15487

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-10 08:19:29 +00:00
Volker Lendecke
d1846452e9 vfs: Add VFS_OPEN_HOW_WITH_BACKUP_INTENT
Indicate BACKUP_INTENT to vfs_openat(). Why? I have a customer request
who wants to add O_NOATIME in this case to avoid metadata updates when
a backup or virus-checking application comes along.

This does not fully handle BACKUP_INTENT correctly, this would require
become_root() appropriately. We might want to do that later after a
lot of careful security audit, but this patch independently might
already provide some infrastructure for it.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Oct  5 14:00:33 UTC 2023 on atb-devel-224
2023-10-05 14:00:33 +00:00
Volker Lendecke
f701faf667 smbd: Remove "flags2" from open_file_ntcreate()
"flags" carried just the O_ACCMODE bits, "flags2" everything
else. Unify them.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
02d9321ce0 smbd: Pass struct vfs_open_how to open_file()
We want to pass BACKUP_INTENT down into reopen_from_fsp, and the
elegant way is to do this via vfs_open_how.resolve.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
7c35676987 smbd: Remove "local_flags" from open_file()
This needs close review. I could not see where we were actually
referencing the original flags in a way that would not be available in
local_flags. The reason for this patch is that I want to pass in
vfs_open_how into open_file(), and the distinction between flags and
local_flags made this significantly harder to understand for me.

The only place where we really used both versions is the DBG_NOTICE in
the last hunk, and this will come back in the next patch.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
6ec031b2d1 smbd: Make open_file() a bit safer
Move adding O_RDWR before the check for read only shares. I haven't
been able to pass this condition through SMB, but in any case we
should not accidentially open with O_RDWR in the !CAN_WRITE(conn)
case.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
884b9926b9 smbd: Simplify open_file()
Simplify an if-condition:

We have to return NT_STATUS_OBJECT_NAME_INVALID even if we're not
creating. In fact, we probably should not end up in open_file() if
we're open a Windows file with a wildcard.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
814b37bdcf smbd: Simplify open_file()
We have extracted FSP_POSIX_FLAGS_PATHNAMES above.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
f8645c7a10 smbd: Simplify open_file()
We handle O_TRUNC further down anyway by passing local_flags&~O_TRUNC to
reopen_from_fsp(). No need for this FIFO special case.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
df78af9893 smbd: Simplify an if-condition in open_file()
We use the plain (flags&O_TRUNC) a few lines above, make the
if-condition a bit more readable.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
45005d4b71 smbd: Simplify open_file()
We can unconditionally just and-out O_CREAT from local_flags, so
remove an if-condition.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
ad7b119b8b smbd: Don't change incoming flags in open_file()
This will be part of a const struct vfs_open_how soon. Further down in
this function we don't look at O_CREAT or O_EXCL of "flags" anymore
anyway.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
3f4c937dcf smbd: Remove variable "accmode" from open_file()
We directly look at the flags in many other places in this function,
so do this also for O_ACCMODE for clarity.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
236df26a1f smbd: Slightly simplify open_file()
Replace "truncating" variable reference with what it was defined
as. We use "(flags & O_TRUNC)" a few lines above, so it can't be that
bad.

After we set it to "false" further down, it was never used again.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
2a53fdeb44 smbd: Pass "struct vfs_open_how" to reopen_from_fsp()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
7996c07bd8 smbd: Pass "struct vfs_open_how" to fd_open_atomic()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
4b376fff03 smbd: Pass "struct vfs_open_how" to reopen_from_procfd()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2023-10-05 12:58:33 +00:00
Volker Lendecke
cb89ea70b1 libsmb: Use pidl generated parsing for posix file info
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 Oct  4 21:26:20 UTC 2023 on atb-devel-224
2023-10-04 21:26:20 +00:00
Volker Lendecke
cb166028c4 libsmb: Pass NTTIME to interpret_long_date()
Separate concerns of conversion and pulling off the wire. Needed soon
for smb311 pidl generated parsing.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-04 20:31:36 +00:00
Volker Lendecke
7b86570216 smbd: Remove unused marshalling of smb3posix file information
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-10-04 20:31:36 +00:00