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samba-mirror/source4/setup/schema_samba4.ldif
Joseph Sutton d5d0e71279 CVE-2023-0614 ldb: Prevent disclosure of confidential attributes 
Add a hook, acl_redact_msg_for_filter(), in the aclread module, that
marks inaccessible any message elements used by an LDAP search filter
that the user has no right to access. Make the various ldb_match_*()
functions check whether message elements are accessible, and refuse to
match any that are not. Remaining message elements, not mentioned in the
search filter, are checked in aclread_callback(), and any inaccessible
elements are removed at this point.

Certain attributes, namely objectClass, distinguishedName, name, and
objectGUID, are always present, and hence the presence of said
attributes is always allowed to be checked in a search filter. This
corresponds with the behaviour of Windows.

Further, we unconditionally allow the attributes isDeleted and
isRecycled in a check for presence or equality. Windows is not known to
make this special exception, but it seems mostly harmless, and should
mitigate the performance impact on searches made by the show_deleted
module.

As a result of all these changes, our behaviour regarding confidential
attributes happens to match Windows more closely. For the test in
confidential_attr.py, we can now model our attribute handling with
DC_MODE_RETURN_ALL, which corresponds to the behaviour exhibited by
Windows.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15270

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-04-05 02:10:35 +00:00

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#
# Schema elements which do not exist in AD, but which we use in Samba4
#
## Samba4 OID allocation from Samba3's examples/LDAP/samba.schema
## 1.3.6.1.4.1.7165.4.1.x - attributetypes
## 1.3.6.1.4.1.7165.4.2.x - objectclasses
## 1.3.6.1.4.1.7165.4.3.x - LDB/LDAP Controls
### see dsdb/samdb/samdb.h
## 1.3.6.1.4.1.7165.4.4.x - LDB/LDAP Extended Operations
### see dsdb/samdb/samdb.h
## 1.3.6.1.4.1.7165.4.5.x - ldap extended matches
## 1.3.6.1.4.1.7165.4.6.1.x - SELFTEST random attributes
## 1.3.6.1.4.1.7165.4.6.1.1.x - ldap_syntaxes.py
## 1.3.6.1.4.1.7165.4.6.1.2.x - ldap_syntaxes.py
## 1.3.6.1.4.1.7165.4.6.1.4.x - urgent_replication.py
## 1.3.6.1.4.1.7165.4.6.1.5.x - repl_schema.py
## 1.3.6.1.4.1.7165.4.6.1.6.x - ldap_schema.py
## 1.3.6.1.4.1.7165.4.6.1.7.x - dsdb_schema_info.py
## 1.3.6.1.4.1.7165.4.6.1.8.x - dsdb_schema_attributes.py
## 1.3.6.1.4.1.7165.4.6.2.x - SELFTEST random classes
## 1.3.6.1.4.1.7165.4.6.2.1.x - ldap_syntaxes.py
## 1.3.6.1.4.1.7165.4.6.2.2.x - ldap_syntaxes.py
## 1.3.6.1.4.1.7165.4.6.2.3.x - sec_descriptor.py
## 1.3.6.1.4.1.7165.4.6.2.4.x - urgent_replication.py
## 1.3.6.1.4.1.7165.4.6.2.5.x - repl_schema.py
## 1.3.6.1.4.1.7165.4.6.2.6.x - ldap_schema.py
## 1.3.6.1.4.1.7165.4.6.2.7.x - dsdb_schema_info.py
## 1.3.6.1.4.1.7165.4.6.2.8.x - getnc_schema.py
## 1.3.6.1.4.1.7165.4.6.2.9.x - sid_strings.py
## 1.3.6.1.4.1.7165.4.255.x - mapped OIDs due to conflicts between AD and standards-track
#
#
#
# Not used anymore
#
#dn: cn=ntpwdHash,${SCHEMADN}
#cn: ntpwdHash
#name: NTPWDHash
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: ntpwdhash
#isSingleValued: TRUE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: E961130F-5084-458C-9E9C-DEC16DA08592
#adminDisplayName: NT-PWD-Hash
#attributeID: 1.3.6.1.4.1.7165.4.1.1
#attributeSyntax: 2.5.5.10
#oMSyntax: 4
#
# Not used anymore
#
#dn: cn=lmpwdHash,${SCHEMADN}
#cn: lmpwdHash
#name: lmpwdHash
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: lmpwdhash
#isSingleValued: TRUE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: CBD0D18C-9C54-4A77-87C4-5CEEAF781253
#adminDisplayName: LM-PWD-Hash
#attributeID: 1.3.6.1.4.1.7165.4.1.2
#attributeSyntax: 2.5.5.10
#oMSyntax: 4
#
# Not used anymore
#
#dn: cn=sambaNtPwdHistory,${SCHEMADN}
#cn: sambaNtPwdHistory
#name: sambaNtPwdHistory
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: sambaNtPwdHistory
#isSingleValued: TRUE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: 8CCD7658-C574-4435-A38C-99572E349E6B
#adminDisplayName: SAMBA-NT-PWD-History
#attributeID: 1.3.6.1.4.1.7165.4.1.3
#attributeSyntax: 2.5.5.10
#oMSyntax: 4
#
# Not used anymore
#
#dn: cn=sambaLmPwdHistory,${SCHEMADN}
#cn: sambaLmPwdHistory
#name: sambaLmPwdHistory
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: sambaLmPwdHistory
#isSingleValued: FALSE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: 0EAFE3DD-0F53-495E-8A34-97BB28AF17A4
#adminDisplayName: SAMBA-LM-PWDHistory
#attributeID: 1.3.6.1.4.1.7165.4.1.4
#attributeSyntax: 2.5.5.10
#oMSyntax: 4
#
# Not used anymore
#
#dn: CN=sambaPassword,${SCHEMADN}
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: sambaPassword
#isSingleValued: FALSE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: 87F10301-229A-4E69-B63A-998339ADA37A
#adminDisplayName: SAMBA-Password
#attributeID: 1.3.6.1.4.1.7165.4.1.5
#attributeSyntax: 2.5.5.5
#oMSyntax: 22
#
# Not used anymore
#
#dn: cn=dnsDomain,${SCHEMADN}
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: dnsDomain
#isSingleValued: FALSE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: A40165E6-5E45-44A7-A8FA-186C94333018
#adminDisplayName: DNS-Domain
#attributeID: 1.3.6.1.4.1.7165.4.1.6
#attributeSyntax: 2.5.5.4
#oMSyntax: 20
# not used anymore
#dn: cn=privilege,${SCHEMADN}
#objectClass: top
#objectClass: attributeSchema
#cn: privilege
#lDAPDisplayName: privilege
#isSingleValued: FALSE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: 7429BC94-CC6A-4481-8B2C-A97E316EB182
#adminDisplayName: Privilege
#attributeID: 1.3.6.1.4.1.7165.4.1.7
#attributeSyntax: 2.5.5.4
#oMSyntax: 20
#
# Not used anymore
#
#dn: CN=unixName,${SCHEMADN}
#cn: unixName
#name: unixName
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: unixName
#isSingleValued: TRUE
#systemFlags: 16
#systemOnly: FALSE
#schemaIDGUID: bf9679f2-0de6-11d0-a285-00aa003049e2
#adminDisplayName: Unix-Name
#attributeID: 1.3.6.1.4.1.7165.4.1.9
#attributeSyntax: 2.5.5.4
#oMSyntax: 20
#
# Not used anymore
#
#dn: cn=krb5Key,${SCHEMADN}
#cn: krb5Key
#name: krb5Key
#objectClass: top
#objectClass: attributeSchema
#lDAPDisplayName: krb5Key
#isSingleValued: FALSE
#systemFlags: 17
#systemOnly: TRUE
#schemaIDGUID: 0EAFE3DD-0F53-495E-8A34-97BB28AF17A4
#adminDisplayName: krb5-Key
#attributeID: 1.3.6.1.4.1.5322.10.1.10
#attributeSyntax: 2.5.5.10
#oMSyntax: 4
# Controls 1.3.6.1.4.1.7165.4.3.x
#Allocated: (not used anymore) DSDB_CONTROL_REPLICATED_OBJECT_OID 1.3.6.1.4.1.7165.4.3.1
#Allocated: DSDB_CONTROL_CURRENT_PARTITION_OID 1.3.6.1.4.1.7165.4.3.2
#Allocated: DSDB_CONTROL_REPLICATED_UPDATE_OID 1.3.6.1.4.1.7165.4.3.3
#Allocated: DSDB_CONTROL_DN_STORAGE_FORMAT_OID 1.3.6.1.4.1.7165.4.3.4
#Allocated: LDB_CONTROL_RECALCULATE_SD_OID 1.3.6.1.4.1.7165.4.3.5
#Allocated: LDB_CONTROL_REVEAL_INTERNALS 1.3.6.1.4.1.7165.4.3.6
#Allocated: LDB_CONTROL_AS_SYSTEM_OID 1.3.6.1.4.1.7165.4.3.7
#Allocated: DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID 1.3.6.1.4.1.7165.4.3.8
#Allocated: DSDB_CONTROL_PASSWORD_HASH_VALUES_OID 1.3.6.1.4.1.7165.4.3.9
#Allocated: DSDB_CONTROL_PASSWORD_CHANGE_OID 1.3.6.1.4.1.7165.4.3.10
#Allocated: DSDB_CONTROL_APPLY_LINKS 1.3.6.1.4.1.7165.4.3.11
#Allocated: DSDB_CONTROL_BYPASS_PASSWORD_HASH_OID 1.3.6.1.4.1.7165.4.3.12
#Allocated: LDB_CONTROL_BYPASS_OPERATIONAL_OID 1.3.6.1.4.1.7165.4.3.13
#Allocated: DSDB_CONTROL_CHANGEREPLMETADATA_OID 1.3.6.1.4.1.7165.4.3.14
#Allocated: (not used anymore) DSDB_CONTROL_SEARCH_APPLY_ACCESS 1.3.6.1.4.1.7165.4.3.15
#Allocated: LDB_CONTROL_PROVISION_OID 1.3.6.1.4.1.7165.4.3.16
#Allocated: DSDB_CONTROL_NO_GLOBAL_CATALOG 1.3.6.1.4.1.7165.4.3.17
#Allocated: DSDB_CONTROL_PARTIAL_REPLICA 1.3.6.1.4.1.7165.4.3.18
#Allocated: DSDB_CONTROL_DBCHECK 1.3.6.1.4.1.7165.4.3.19
#Allocated: DSDB_CONTROL_DBCHECK_MODIFY_RO_REPLICA 1.3.6.1.4.1.7165.4.3.19.1
#Allocated: DSDB_CONTROL_DBCHECK_FIX_DUPLICATE_LINKS 1.3.6.1.4.1.7165.4.3.19.2
#Allocated: DSDB_CONTROL_DBCHECK_FIX_LINK_DN_NAME 1.3.6.1.4.1.7165.4.3.19.3
#Allocated: DSDB_CONTROL_DBCHECK_FIX_LINK_DN_SID 1.3.6.1.4.1.7165.4.3.19.4
#Allocated: DSDB_CONTROL_PASSWORD_BYPASS_LAST_SET_OID 1.3.6.1.4.1.7165.4.3.20
#Allocated: DSDB_CONTROL_SEC_DESC_PROPAGATION_OID 1.3.6.1.4.1.7165.4.3.21
#Allocated: DSDB_CONTROL_PERMIT_INTERDOMAIN_TRUST_UAC_OID 1.3.6.1.4.1.7165.4.3.23
#Allocated: DSDB_CONTROL_RESTORE_TOMBSTONE_OID 1.3.6.1.4.1.7165.4.3.24
#Allocated: DSDB_CONTROL_CHANGEREPLMETADATA_RESORT_OID 1.3.6.1.4.1.7165.4.3.25
#Allocated: DSDB_CONTROL_PASSWORD_DEFAULT_LAST_SET_OID 1.3.6.1.4.1.7165.4.3.26
#Allocated: DSDB_CONTROL_PASSWORD_USER_ACCOUNT_CONTROL_OID 1.3.6.1.4.1.7165.4.3.27
#Allocated: DSDB_CONTROL_SKIP_DUPLICATES_CHECK_OID 1.3.6.1.4.1.7165.4.3.28
#Allocated: DSDB_CONTROL_REPLMD_VANISH_LINKS 1.3.6.1.4.1.7165.4.3.29
#Allocated: LDB_CONTROL_RECALCULATE_RDN_OID 1.3.6.1.4.1.7165.4.3.30
#Allocated: DSDB_CONTROL_FORCE_RODC_LOCAL_CHANGE 1.3.6.1.4.1.7165.4.3.31
#Allocated: DSDB_CONTROL_INVALID_NOT_IMPLEMENTED 1.3.6.1.4.1.7165.4.3.32
#Allocated: DSDB_CONTROL_PASSWORD_ACL_VALIDATION_OID 1.3.6.1.4.1.7165.4.3.33
#Allocated: DSDB_CONTROL_TRANSACTION_IDENTIFIER_OID 1.3.6.1.4.1.7165.4.3.34
#Allocated: DSDB_CONTROL_FORCE_ALLOW_VALIDATED_DNS_HOSTNAME_SPN_WRITE_OID 1.3.6.1.4.1.7165.4.3.35
#Allocated: DSDB_CONTROL_CALCULATED_DEFAULT_SD_OID 1.3.6.1.4.1.7165.4.3.36
#Allocated: DSDB_CONTROL_ACL_READ_OID 1.3.6.1.4.1.7165.4.3.37
# Extended 1.3.6.1.4.1.7165.4.4.x
#Allocated: DSDB_EXTENDED_REPLICATED_OBJECTS_OID 1.3.6.1.4.1.7165.4.4.1
#Allocated: DSDB_EXTENDED_SCHEMA_UPDATE_NOW_OID 1.3.6.1.4.1.7165.4.4.2
#Allocated: LDB_EXTENDED_SEQUENCE_NUMBER 1.3.6.1.4.1.7165.4.4.3
#Allocated: DSDB_EXTENDED_CREATE_PARTITION_OID 1.3.6.1.4.1.7165.4.4.4
#Allocated: DSDB_EXTENDED_ALLOCATE_RID_POOL 1.3.6.1.4.1.7165.4.4.5
#Allocated: DSDB_EXTENDED_SCHEMA_UPGRADE_IN_PROGRESS_OID 1.3.6.1.4.1.7165.4.4.6
#Allocated: DSDB_EXTENDED_SEC_DESC_PROPAGATION_OID 1.3.6.1.4.1.7165.4.4.7
#Allocated: DSDB_EXTENDED_CREATE_OWN_RID_SET 1.3.6.1.4.1.7165.4.4.8
#Allocated: DSDB_EXTENDED_ALLOCATE_RID 1.3.6.1.4.1.7165.4.4.9
#Allocated: DSDB_EXTENDED_SCHEMA_LOAD 1.3.6.1.4.1.7165.4.4.10
############
# ldap extended matches
#Allocated: SAMBA_LDAP_MATCH_ALWAYS_FALSE 1.3.6.1.4.1.7165.4.5.1
#Allocated: DSDB_MATCH_FOR_EXPUNGE 1.3.6.1.4.1.7165.4.5.2
#Allocated: DSDB_MATCH_FOR_DNS_TO_TOMBSTONE_TIME 1.3.6.1.4.1.7165.4.5.3
#Allocated: (middleName) attributeID: 1.3.6.1.4.1.7165.4.255.1
#Allocated: (defaultGroup) attributeID: 1.3.6.1.4.1.7165.4.255.2
#Allocated: (modifyTimestamp) samba4ModifyTimestamp: 1.3.6.1.4.1.7165.4.255.3
#Allocated: (subSchema) samba4SubSchema: 1.3.6.1.4.1.7165.4.255.4
#Allocated: (objectClasses) samba4ObjectClasses: 1.3.6.1.4.1.7165.4.255.5
#Allocated: (ditContentRules) samba4DitContentRules: 1.3.6.1.4.1.7165.4.255.6
#Allocated: (attributeTypes) samba4AttributeTypes: 1.3.6.1.4.1.7165.4.255.7
#Allocated: (dynamicObject) samba4DynamicObject: 1.3.6.1.4.1.7165.4.255.8
#Allocated: (entryTTL) samba4EntryTTL: 1.3.6.1.4.1.7165.4.255.9
#Allocated: (thumbnailPhoto) attributeID: 1.3.6.1.4.1.7165.4.255.10
#Allocated: (thumbnailLogo) attributeID: 1.3.6.1.4.1.7165.4.255.11
#
# Based on domainDNS, but without the DNS bits.
#
#
# Not used anymore
#
#dn: CN=Samba4-Local-Domain,${SCHEMADN}
#objectClass: top
#objectClass: classSchema
#cn: Samba4-Local-Domain
#subClassOf: top
#governsID: 1.3.6.1.4.1.7165.4.2.2
#rDNAttID: cn
#adminDisplayName: Samba4-Local-Domain
#adminDescription: Samba4-Local-Domain
#systemMayContain: msDS-Behavior-Version
#systemMayContain: managedBy
#objectClassCategory: 1
#lDAPDisplayName: samba4LocalDomain
#schemaIDGUID: 07be1647-8310-4fba-91ae-34e55d5a8293
#systemOnly: FALSE
#systemAuxiliaryClass: samDomain
#defaultSecurityDescriptor: D:(A;;RPLCLORC;;;DA)(A;;RPWPCRCCDCLCLORCWOWDSDDTSW;;;SY)(A;;RPLCLORC;;;AU)
#systemFlags: 16
#defaultHidingValue: TRUE
#defaultObjectCategory: CN=Samba4-Local-Domain,${SCHEMADN}
dn: CN=Samba4Top,${SCHEMADN}
objectClass: top
objectClass: classSchema
cn: Samba4Top
subClassOf: top
objectGUID: 4af54ff0-ff3c-4f17-8fb0-611ec83ddfb4
governsID: 1.3.6.1.4.1.7165.4.2.1
mayContain: msDS-ObjectReferenceBL
rDNAttID: cn
adminDisplayName: Samba4TopTop
adminDescription: Attributes used in top in Samba4 that OpenLDAP does not
objectClassCategory: 3
lDAPDisplayName: samba4Top
schemaIDGUID: 073598d0-635b-4685-a929-da731b98d84e
systemOnly: TRUE
systemPossSuperiors: lostAndFound
systemMayContain: url
systemMayContain: wWWHomePage
systemMayContain: wellKnownObjects
systemMayContain: wbemPath
systemMayContain: uSNSource
systemMayContain: uSNLastObjRem
systemMayContain: USNIntersite
systemMayContain: uSNDSALastObjRemoved
systemMayContain: systemFlags
systemMayContain: subRefs
systemMayContain: siteObjectBL
systemMayContain: serverReferenceBL
systemMayContain: sDRightsEffective
systemMayContain: revision
systemMayContain: repsTo
systemMayContain: repsFrom
systemMayContain: directReports
systemMayContain: replUpToDateVector
systemMayContain: replPropertyMetaData
systemMayContain: name
systemMayContain: queryPolicyBL
systemMayContain: parentGUID
systemMayContain: proxyAddresses
systemMayContain: proxiedObjectName
systemMayContain: possibleInferiors
systemMayContain: partialAttributeSet
systemMayContain: partialAttributeDeletionList
systemMayContain: otherWellKnownObjects
systemMayContain: objectVersion
systemMayContain: nonSecurityMemberBL
systemMayContain: netbootSCPBL
systemMayContain: ownerBL
systemMayContain: msDS-ReplValueMetaData
systemMayContain: msDS-ReplAttributeMetaData
systemMayContain: msDS-NcType
systemMayContain: msDS-NonMembersBL
systemMayContain: msDS-NCReplOutboundNeighbors
systemMayContain: msDS-NCReplInboundNeighbors
systemMayContain: msDS-NCReplCursors
systemMayContain: msDS-TasksForAzRoleBL
systemMayContain: msDS-TasksForAzTaskBL
systemMayContain: msDS-OperationsForAzRoleBL
systemMayContain: msDS-OperationsForAzTaskBL
systemMayContain: msDS-MembersForAzRoleBL
systemMayContain: msDs-masteredBy
systemMayContain: mS-DS-ConsistencyGuid
systemMayContain: mS-DS-ConsistencyChildCount
systemMayContain: msDS-Approx-Immed-Subordinates
systemMayContain: msCOM-PartitionSetLink
systemMayContain: msCOM-UserLink
systemMayContain: masteredBy
systemMayContain: managedObjects
systemMayContain: lastKnownParent
systemMayContain: isPrivilegeHolder
systemMayContain: isDeleted
systemMayContain: isCriticalSystemObject
systemMayContain: showInAdvancedViewOnly
systemMayContain: fSMORoleOwner
systemMayContain: fRSMemberReferenceBL
systemMayContain: frsComputerReferenceBL
systemMayContain: fromEntry
systemMayContain: flags
systemMayContain: extensionName
systemMayContain: dSASignature
systemMayContain: dSCorePropagationData
systemMayContain: displayNamePrintable
systemMayContain: displayName
systemMayContain: description
systemMayContain: cn
systemMayContain: canonicalName
systemMayContain: bridgeheadServerListBL
systemMayContain: allowedChildClassesEffective
systemMayContain: allowedChildClasses
systemMayContain: allowedAttributesEffective
systemMayContain: allowedAttributes
systemMayContain: adminDisplayName
systemMayContain: adminDescription
systemMustContain: objectCategory
systemMustContain: nTSecurityDescriptor
systemMustContain: instanceType
defaultSecurityDescriptor: D:(A;;RPWPCRCCDCLCLORCWOWDSDDTSW;;;DA)(A;;RPWPCRCCDCLCLORCWOWDSDDTSW;;;SY)(A;;RPLCLORC;;;AU)
systemFlags: 16
defaultHidingValue: TRUE
objectCategory: CN=Class-Schema,${SCHEMADN}
defaultObjectCategory: CN=Samba4Top,${SCHEMADN}
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