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This is not a security issue as it only happens when printing the structure
during debugging, not normal production.
Found by Michael Hanselmann using an NDR fuzzer and Hongfuzz.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Thanks to Douglas Bagnall for the samples, produced from seeds
generated by Samba's make test traffic, fuzzed by ndr_fuzz_X
and Hongfuzz.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Right now this panics the scavenger daemon, preventing it from doing
its work. The reopen we expect to fail with
NT_STATUS_OBJECT_NAME_NOT_FOUND thus succeeds. I know that we should
more precisely detect the scavenger crash and with Jeremy's pattern in
46899ecf83 this would be possible. However, this is C code right now,
and scanning the logfile for the panic is more I have time for right
now. The test successfully indicates failure, as the next commit will
show.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This implements two core changes:
* use NTTIME instead of struct timespec at the database layer
* use struct timespec { .tv_nsec = SAMBA_UTIME_OMIT } as special sentinel
value in smbd when processing timestamps
Using NTTIME at the database layer is only done to avoid storing the special
struct timespec sentinel values on disk. Instead, with NTTIME the sentinel value
for an "unset" timestamp is just 0 on-disk.
The NTTIME value of 0 gets translated by nt_time_to_full_timespec() to the
struct timespec sentinel value { .tv_nsec = SAMBA_UTIME_OMIT }.
The function is_omit_timespec() can be used to check this.
Beside nt_time_to_full_timespec(), there are various other new time conversion
functions with *full* in their name that can be used to safely convert between
different types with the changed sentinel value.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Needed to support dates corresponding to (time_t)0 and (time_t)-1.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
interpret_long_date() is now only used in the client. To enable correct
processing of dates before the UNIX epoch, call nt_time_to_full_timespec().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Add a test that shows that setting timestamps to the special
values (time_t) 4294967295, 0, -1 and anything below is broken.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This blackbox test confirms that Samba returns NTTIME=0 when a filesystem object
has a UNIX timestamp value of 0, ie UNIX epoch start 1.1.1970.
Here's an example output from running smbstatus allinfo on such a file:
$ bin/smbclient -U slow%x //localhost/test -c "allinfo time_0_1970"
altname: T11662~T
create_time: NTTIME(0)
access_time: NTTIME(0)
write_time: NTTIME(0)
change_time: NTTIME(0)
attributes: (80)
stream: [::$DATA], 0 bytes
If you look at it with smbclient ls command, it munges the output to be 1970 so
you don't notice the problem:
$ bin/smbclient -U slow%x //localhost/test -c "ls time_0_1970"
time_0_1970 N 0 Thu Jan 1 01:00:00 1970
The test also test other time_t values -1 and 4294967295 that are used as
sentinel values in Samba code and shows that handling these values is equally
broken.
Same for time_t values < -1.
Note that I'm adding a blackbox test *and* a torture test, as with this blackbox
test I can directly control the server side, but with smbtorture I have to go
through the SMB stack to create the files which doesn't work currently.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7771
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Otherwise we can end up with negprot.done set, but
without smbXsrv_connection_init_tables() being called.
This can cause a client self-crash.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14205
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Dec 4 21:27:24 UTC 2019 on sn-devel-184
Without this protection we will spin during decode of a string_array or nstring_array
that is terminated by only a single NUL byte, not two as required by UTF-16.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13874
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Tests to ensure that ndr_pull_string handles zero and one byte length
data correctly for both character strings and UTF-16 strings.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13874
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Fuzzing by Michael Hanselmann found an infinite loop parsing a malformed
supplemental credentials structure. There are no server-side
network-accessible calls using this code.
This patch adds an ndrdump blackbox test to replicate the issue.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13874
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Nov 26 22:55:38 UTC 2019 on sn-devel-184
This allows ndrdump --validate to avoid following a NULL pointer when re-pushing
a valid but unusual input.
It also avoids an issue if the Samba server code were to provide a response
without an EncryptedRandomSessionKey.
At this stage ntlmssp.idl is not used for this, instead the packets are
generated with msrpc_gen().
Found by Douglas Bagnall using Hongfuzz and the new fuzz_ndr_X
fuzzer.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Nov 20 06:06:29 UTC 2019 on sn-devel-184
This demonstrates a bug found by Douglas Bagnall using Hongfuzz and the new fuzz_ndr_X
fuzzer where the value() evaluatuion could segfault if it was made to follow a NULL
pointer.
This also demonstrates that the --base64 mode works on file inputs.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
We were accidentally checking the memory just past the array instead of
checking each member.
This could have led to the size of some arrays not being checked.
Found by Michael Hanselmann using Honggfuzz and an fuzzer for Samba's
NDR layer.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13877
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Pair-programmed-with: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The PIDL bug is in the handling of arrays of arrays.
Test input provided by Michael Hanselmann and found using Hongfuzz.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13875
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Previously we would assume the array head was the talloc context
however this is not the case if the array is a fixed size inline array
within the parent struct.
In that case the overall object's talloc context is the correct
context to reference.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-programmed-with: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Thu Nov 14 17:36:49 UTC 2019 on sn-devel-184
Struct members that are marked as ref pointers need to have an object
allocated for them.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Pair-programmed-with: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14191
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Pair-progammed-with: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14040
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Thu Oct 31 23:29:15 UTC 2019 on sn-devel-184
Incremental results are provided by a flag on the dirsync control, not
by changing the attribute name.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14040
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
ad_unpack() needs the filesize, not the capped IO size we're using in the caller
to read up to "size" bystem from the ._ AppleDouble file.
This fixes a regression introduced by bdc257a1cb
for bug 13968.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14171
RN: vfs_fruit returns capped resource fork length
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed Oct 30 14:52:34 UTC 2019 on sn-devel-184
Reveals a bug where the resource fork size is capped at 65454 bytes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14171
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
utf8_len represents the number of characters (not bytes) of the
password. If the password includes multi-byte characters it is required
to write the total number of bytes to the check password script.
Otherwise the last bytes of the password string would be ignored.
Therefore we rename utf8_len to be clear what it does and does
not represent.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12438
Signed-off-by: Björn Baumbach <bb@sernet.de>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(master): Tue Oct 29 11:58:45 UTC 2019 on sn-devel-184
Azure AD connect reports discovery errors:
reference-value-not-ldap-conformant
for attributes member and manager.
The key is that it sends the LDAP_SERVER_EXTENDED_DN_OID without
an ExtendedDNRequestValue blob, which means the flag value should
be treated as 0 and the HEX string format should be used.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14153
RN: Prevent azure ad connect from reporting discovery errors:
reference-value-not-ldap-conformant
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu Oct 24 11:06:58 UTC 2019 on sn-devel-184
This demonstrates a problems that the extended_dn returned
by the dirsync module always uses the SDDL format for GUID/SID
components.
Azure AD connect reports discovery errors:
reference-value-not-ldap-conformant
for attributes member and manager.
The key is that it sends the LDAP_SERVER_EXTENDED_DN_OID without
an ExtendedDNRequestValue blob, which means the flag value should
be treated as 0 and the HEX string format should be used.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14153
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We need the target service without realm, but the proxy services with realm.
I have a domain with an w2008r2 server and a samba and now both generate
the same S4U_DELEGATION_INFO.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13133
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13133
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This partially reverts 303b7e59a2.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14155
Pair-Programmed-With: Isaac Boukris <iboukris@redhat.com>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Isaac Boukris <iboukris@redhat.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Sat Oct 12 17:39:13 UTC 2019 on sn-devel-184
Pair-Programmed-With: Isaac Boukris <iboukris@redhat.com>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Isaac Boukris <iboukris@redhat.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This will avoid introducing regressions in either client or server code.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14106
Signed-off-by: Isaac Boukris <iboukris@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Sat Oct 12 15:51:42 UTC 2019 on sn-devel-184
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14106
Pair-Programmed-With: Andreas Schneider <asn@samba.org>
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14106
Signed-off-by: Isaac Boukris <iboukris@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14106
Signed-off-by: Isaac Boukris <iboukris@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This is required to ensure File-ID info is populated with the correct on-disk
value, before calling file_set_dosmode() which will update the on-disk value.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14137
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This now hopefully covers most possible combinations of creating and opening
files plus, checking the file's File-ID after every operation.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14137
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
ID_TYPE_BOTH means that each user and group has two mappings, a uid and
gid. In addition the calls to getpwent, getpwuid, getgrent and getgrgid
always return some information, so that uid and gid can be mapped to a
name. Establish a test to verify that the expected information is
returned.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14141
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This demonstrates that can do krb5_auth in winbindd without knowning about trusted domains.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14124
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Tue Sep 24 19:51:29 UTC 2019 on sn-devel-184
