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Reported and proposed fix by Shilpa K <shilpa.krishnareddy@gmail.com>.
When processing DENY ACE entries for owner rights SIDs (S-1-3-4) the
code OR's in the deny access mask bits without taking into account if
they were being requested in the requested access mask.
E.g. The current logic has:
An ACL containining:
[0] SID: S-1-3-4
TYPE: DENY
MASK: WRITE_DATA
[1] SID: S-1-3-4
TYPE: ALLOW
MASK: ALLOW_ALL
prohibits an open request by the owner for READ_DATA - even though this
is explicitly allowed.
Furthermore a non-canonical ACL containing:
[0] SID: User SID 1-5-21-something
TYPE: ALLOW
MASK: READ_DATA
[1] SID: S-1-3-4
TYPE: DENY
MASK: READ_DATA
[2] SID: User SID 1-5-21-something
TYPE: ALLOW
MASK: WRITE_DATA
prohibits an open request by the owner for READ_DATA|WRITE_DATA - even
though READ_DATA is explicitly allowed in ACE no 0 and is thus already
filtered out of the "access-still-needed" mask when the deny ACE no 1 is
evaluated.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12466
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12373
Signed-off-by: Moritz Beller <moritzbeller@gmx.de>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Simo <simo@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Oct 13 18:13:45 CEST 2016 on sn-devel-144
Add Samba specific well known SIDs for
Unix UID and GID owner.
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Guenther Deschner <gd@samba.org>
SECURITY_GUEST is not exactly the same as SECURITY_ANONYMOUS.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11847
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11677
definitions taken from [MS-DTYP]: Windows Data Types,
2.4.2.4 Well-Known SID Structures.
Guenther
Signed-off-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
sid_parse takes a binary blob, uint8_t reflects this a bit
better than char * does
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Volker, apologies for the mistake.
Spotted by Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Apr 29 08:20:23 CEST 2015 on sn-devel-104
This prepares a possibly stripped security descriptor for a client.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
TODO: we should import the whole lists from [MS-DTYP].
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10773
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Aug 22 02:52:50 CEST 2014 on sn-devel-104
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jun 10 21:46:15 CEST 2014 on sn-devel-104
This function is a duplicate of security_ace_equal(), and is no longer
used.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu May 29 03:34:38 CEST 2014 on sn-devel-104
Both offer the same functionality, sec_ace_equal() will be removed.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This change cleans up the white-space damage, and converts the single
line if-then statements to match Samba's coding conventions.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
With sec_desc_del_sid() now gone, this can also be removed.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The function is unused, and shares mostly the same behaviour as
security_descriptor_acl_del().
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
With make_sec_desc() converted to use security_acl_dup(), which offers
the same behaviour, this function is no longer needed.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
It currently leaks memory onto the provided talloc context on error, fix
this.
Use X_acl_dup() functions provided by secuity_descriptor.c, rather than
the redundant secdesc.c calls. Also, use the IDL generated functions to
calculate the security descriptor structure size.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
With all callers converted to use security_descriptor_copy(), this
function can be removed.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Use security_descriptor_copy() instead, which is also provided by
libcli.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This function adds a new allow-type ACE to an existing ACE list. With
the removal of sec_desc_add_sid(), this is no longer used internally.
The same behaviour can be achieved via the much cleaner
security_ace_create() function.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This function adds an ACE to a security descriptor DACL. The same can be
achieved via the more flexible and much cleaner security_ace_create()
and security_descriptor_dacl_add() functions.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
struct security_ace has a struct dom_sid, not a pointer to it. So we don't have
to talloc it first and then not free it.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue May 27 12:54:55 CEST 2014 on sn-devel-104
This avoids a complex if-expression
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): Sat Dec 14 00:10:21 CET 2013 on sn-devel-104
Restore and backup privileges are not relevant to ldap
access checks, and the TakeOwnership privilege should
grant write_owner right
Signed-off-by: Nadezhda Ivanova <nivanova@symas.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
