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-rwxr-xr-xsource4/lib/ldb/tests/python/sec_descriptor.py33
-rw-r--r--source4/libcli/security/create_descriptor.c207
2 files changed, 114 insertions, 126 deletions
diff --git a/source4/lib/ldb/tests/python/sec_descriptor.py b/source4/lib/ldb/tests/python/sec_descriptor.py
index 609fca86ab..f26df07df1 100755
--- a/source4/lib/ldb/tests/python/sec_descriptor.py
+++ b/source4/lib/ldb/tests/python/sec_descriptor.py
@@ -1725,6 +1725,39 @@ class DaclDescriptorTests(DescriptorTests):
desc_sddl = self.get_desc_sddl(group_dn)
self.assertTrue("(D;;WP;;;DA)(D;CIIO;WP;;;CO)" in desc_sddl)
+ def test_212(self):
+ """ Provide ACE with IO flag, should be ignored
+ """
+ ou_dn = "OU=test_inherit_ou," + self.base_dn
+ group_dn = "CN=test_inherit_group," + ou_dn
+ # Create inheritable-free OU
+ self.create_clean_ou(ou_dn)
+ # Add some custom 'CI' ACE
+ mod = "D:(D;CIIO;WP;;;CO)"
+ self.create_domain_group(self.ldb_admin, group_dn, mod)
+ # Make sure created group object contains only the above inherited ACE(s)
+ # that we've added manually
+ desc_sddl = self.get_desc_sddl(group_dn)
+ print desc_sddl
+ self.assertTrue("(D;CIIO;WP;;;CO)" in desc_sddl)
+ self.assertFalse("(D;;WP;;;DA)" in desc_sddl)
+ self.assertFalse("(D;CIIO;WP;;;CO)(D;CIIO;WP;;;CO)" in desc_sddl)
+
+ def test_213(self):
+ """ Provide ACE with IO flag, should be ignored
+ """
+ ou_dn = "OU=test_inherit_ou," + self.base_dn
+ group_dn = "CN=test_inherit_group," + ou_dn
+ # Create inheritable-free OU
+ self.create_clean_ou(ou_dn)
+ mod = "D:(D;IO;WP;;;DA)"
+ self.create_domain_group(self.ldb_admin, group_dn, mod)
+ # Make sure created group object contains only the above inherited ACE(s)
+ # that we've added manually
+ desc_sddl = self.get_desc_sddl(group_dn)
+ print desc_sddl
+ self.assertFalse("(D;IO;WP;;;DA)" in desc_sddl)
+
########################################################################################
diff --git a/source4/libcli/security/create_descriptor.c b/source4/libcli/security/create_descriptor.c
index f4849cf9c6..d64de2fe22 100644
--- a/source4/libcli/security/create_descriptor.c
+++ b/source4/libcli/security/create_descriptor.c
@@ -53,22 +53,22 @@
uint32_t map_generic_rights_ds(uint32_t access_mask)
{
- if (access_mask & SEC_GENERIC_ALL){
+ if (access_mask & SEC_GENERIC_ALL) {
access_mask |= SEC_ADS_GENERIC_ALL;
access_mask = ~SEC_GENERIC_ALL;
}
- if (access_mask & SEC_GENERIC_EXECUTE){
+ if (access_mask & SEC_GENERIC_EXECUTE) {
access_mask |= SEC_ADS_GENERIC_EXECUTE;
access_mask = ~SEC_GENERIC_EXECUTE;
}
- if (access_mask & SEC_GENERIC_WRITE){
+ if (access_mask & SEC_GENERIC_WRITE) {
access_mask |= SEC_ADS_GENERIC_WRITE;
access_mask &= ~SEC_GENERIC_WRITE;
}
- if (access_mask & SEC_GENERIC_READ){
+ if (access_mask & SEC_GENERIC_READ) {
access_mask |= SEC_ADS_GENERIC_READ;
access_mask &= ~SEC_GENERIC_READ;
}
@@ -83,85 +83,20 @@ static bool object_in_list(struct GUID *object_list, struct GUID *object)
return true;
}
- /* remove any ACEs with inherited flag up - TODO test this! */
-static struct security_acl *clean_user_acl(TALLOC_CTX *mem, struct security_acl *acl)
-{
- int i;
- struct security_acl *new_acl;
- if (!acl) {
- return NULL;
- }
-
- new_acl = talloc_zero(mem, struct security_acl);
-
- for (i=0; i < acl->num_aces; i++) {
- struct security_ace *ace = &acl->aces[i];
- if (!(ace->flags & SEC_ACE_FLAG_INHERITED_ACE)){
- new_acl->aces = talloc_realloc(new_acl, new_acl->aces, struct security_ace,
- new_acl->num_aces+1);
- if (new_acl->aces == NULL) {
- talloc_free(new_acl);
- return NULL;
- }
- new_acl->aces[new_acl->num_aces] = *ace;
- new_acl->num_aces++;
- }
- }
- if (new_acl)
- new_acl->revision = acl->revision;
-
- return new_acl;
-}
-
-/* sort according to rules,
- * replace generic flags with the mapping
- * replace CO and CG with the appropriate owner/group */
-
-static bool postprocess_acl(struct security_acl *acl,
- struct dom_sid *owner,
- struct dom_sid *group,
- uint32_t (*generic_map)(uint32_t access_mask))
-{
- int i;
- struct dom_sid *co, *cg;
- TALLOC_CTX *tmp_ctx = talloc_new(acl);
- if (!generic_map){
- return false;
- }
- co = dom_sid_parse_talloc(tmp_ctx, SID_CREATOR_OWNER);
- cg = dom_sid_parse_talloc(tmp_ctx, SID_CREATOR_GROUP);
- for (i=0; i < acl->num_aces; i++) {
- struct security_ace *ace = &acl->aces[i];
- if (ace->flags & SEC_ACE_FLAG_INHERIT_ONLY)
- continue;
- if (dom_sid_equal(&ace->trustee, co)){
- ace->trustee = *owner;
- ace->flags &= ~SEC_ACE_FLAG_CONTAINER_INHERIT;
- }
- if (dom_sid_equal(&ace->trustee, cg)){
- ace->trustee = *group;
- ace->flags &= ~SEC_ACE_FLAG_CONTAINER_INHERIT;
- }
- ace->access_mask = generic_map(ace->access_mask);
- }
-
- talloc_free(tmp_ctx);
- return true;
-}
-
static struct security_acl *calculate_inherited_from_parent(TALLOC_CTX *mem_ctx,
- struct security_acl *acl,
- bool is_container,
- struct GUID *object_list)
+ struct security_acl *acl,
+ bool is_container,
+ struct dom_sid *owner,
+ struct dom_sid *group,
+ struct GUID *object_list)
{
int i;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
- struct security_acl *tmp_acl = talloc_zero(tmp_ctx, struct security_acl);
- struct security_acl *inh_acl = talloc_zero(tmp_ctx, struct security_acl);
- struct security_acl *new_acl;
+ struct security_acl *tmp_acl = talloc_zero(mem_ctx, struct security_acl);
struct dom_sid *co, *cg;
- if (!tmp_acl || !inh_acl)
+ if (!tmp_acl) {
return NULL;
+ }
if (!acl) {
return NULL;
@@ -169,7 +104,7 @@ static struct security_acl *calculate_inherited_from_parent(TALLOC_CTX *mem_ctx,
co = dom_sid_parse_talloc(tmp_ctx, SID_CREATOR_OWNER);
cg = dom_sid_parse_talloc(tmp_ctx, SID_CREATOR_GROUP);
- for (i=0; i < acl->num_aces; i++){
+ for (i=0; i < acl->num_aces; i++) {
struct security_ace *ace = &acl->aces[i];
if ((ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) ||
(ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT)) {
@@ -188,53 +123,55 @@ static struct security_acl *calculate_inherited_from_parent(TALLOC_CTX *mem_ctx,
if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT ||
ace->type == SEC_ACE_TYPE_ACCESS_DENIED_OBJECT) {
- if (!object_in_list(object_list, &ace->object.object.type.type)){
+ if (!object_in_list(object_list, &ace->object.object.type.type)) {
tmp_acl->aces[tmp_acl->num_aces].flags |= SEC_ACE_FLAG_INHERIT_ONLY;
}
}
+ tmp_acl->aces[tmp_acl->num_aces].access_mask =
+ map_generic_rights_ds(ace->access_mask);
tmp_acl->num_aces++;
- }
- }
-
- if (is_container) {
- for (i=0; i < acl->num_aces; i++){
- struct security_ace *ace = &acl->aces[i];
-
- if (ace->flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT)
- continue;
- if (!dom_sid_equal(&ace->trustee, co) && !dom_sid_equal(&ace->trustee, cg))
- continue;
-
- if ((ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) ||
- (ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT)){
- inh_acl->aces = talloc_realloc(inh_acl, inh_acl->aces, struct security_ace,
- inh_acl->num_aces+1);
- if (inh_acl->aces == NULL){
- talloc_free(tmp_ctx);
- return NULL;
+ if (is_container) {
+ if (!(ace->flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) &&
+ ((dom_sid_equal(&ace->trustee, co) || dom_sid_equal(&ace->trustee, cg)))) {
+ tmp_acl->aces = talloc_realloc(tmp_acl, tmp_acl->aces, struct security_ace,
+ tmp_acl->num_aces+1);
+ if (tmp_acl->aces == NULL) {
+ talloc_free(tmp_ctx);
+ return NULL;
+ }
+ tmp_acl->aces[tmp_acl->num_aces] = *ace;
+ tmp_acl->aces[tmp_acl->num_aces].flags &= ~SEC_ACE_FLAG_INHERIT_ONLY;
+ tmp_acl->aces[tmp_acl->num_aces].flags |= SEC_ACE_FLAG_INHERITED_ACE;
+ if (dom_sid_equal(&tmp_acl->aces[tmp_acl->num_aces].trustee, co)) {
+ tmp_acl->aces[tmp_acl->num_aces].trustee = *owner;
+ }
+ if (dom_sid_equal(&tmp_acl->aces[tmp_acl->num_aces].trustee, cg)) {
+ tmp_acl->aces[tmp_acl->num_aces].trustee = *group;
+ }
+ tmp_acl->aces[tmp_acl->num_aces].flags &= ~SEC_ACE_FLAG_CONTAINER_INHERIT;
+ tmp_acl->aces[tmp_acl->num_aces].access_mask =
+ map_generic_rights_ds(ace->access_mask);
+ tmp_acl->num_aces++;
}
- inh_acl->aces[inh_acl->num_aces] = *ace;
- inh_acl->aces[inh_acl->num_aces].flags &= ~SEC_ACE_FLAG_INHERIT_ONLY;
- inh_acl->aces[inh_acl->num_aces].flags |= SEC_ACE_FLAG_INHERITED_ACE;
- inh_acl->num_aces++;
}
}
- }
- new_acl = security_acl_concatenate(mem_ctx, inh_acl, tmp_acl);
- if (new_acl->num_aces == 0) {
+ }
+ if (tmp_acl->num_aces == 0) {
return NULL;
}
- if (new_acl)
- new_acl->revision = acl->revision;
- talloc_free(tmp_ctx);
- return new_acl;
+ if (acl) {
+ tmp_acl->revision = acl->revision;
+ }
+ return tmp_acl;
}
-static struct security_acl *calculate_inherited_from_creator(TALLOC_CTX *mem_ctx,
- struct security_acl *acl,
- bool is_container,
- struct GUID *object_list)
+static struct security_acl *process_user_acl(TALLOC_CTX *mem_ctx,
+ struct security_acl *acl,
+ bool is_container,
+ struct dom_sid *owner,
+ struct dom_sid *group,
+ struct GUID *object_list)
{
int i;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
@@ -258,10 +195,24 @@ static struct security_acl *calculate_inherited_from_creator(TALLOC_CTX *mem_ctx
struct security_ace *ace = &acl->aces[i];
if (ace->flags & SEC_ACE_FLAG_INHERITED_ACE)
continue;
+ if (ace->flags & SEC_ACE_FLAG_INHERIT_ONLY &&
+ !(ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT ||
+ ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT))
+ continue;
tmp_acl->aces = talloc_realloc(tmp_acl, tmp_acl->aces, struct security_ace,
tmp_acl->num_aces+1);
tmp_acl->aces[tmp_acl->num_aces] = *ace;
+ if (dom_sid_equal(&(tmp_acl->aces[tmp_acl->num_aces].trustee), co)) {
+ tmp_acl->aces[tmp_acl->num_aces].trustee = *owner;
+ tmp_acl->aces[tmp_acl->num_aces].flags &= ~SEC_ACE_FLAG_CONTAINER_INHERIT;
+ }
+ if (dom_sid_equal(&(tmp_acl->aces[tmp_acl->num_aces].trustee), cg)) {
+ tmp_acl->aces[tmp_acl->num_aces].trustee = *group;
+ tmp_acl->aces[tmp_acl->num_aces].flags &= ~SEC_ACE_FLAG_CONTAINER_INHERIT;
+ }
+ tmp_acl->aces[tmp_acl->num_aces].access_mask =
+ map_generic_rights_ds(tmp_acl->aces[tmp_acl->num_aces].access_mask);
tmp_acl->num_aces++;
if (!dom_sid_equal(&ace->trustee, co) && !dom_sid_equal(&ace->trustee, cg))
@@ -319,7 +270,7 @@ static bool compute_acl(struct security_descriptor *parent_sd,
struct security_token *token,
struct security_descriptor *new_sd) /* INOUT argument */
{
- struct security_acl *user_dacl, *tmp_dacl, *tmp_sacl, *user_sacl, *inherited_dacl, *inherited_sacl;
+ struct security_acl *user_dacl, *user_sacl, *inherited_dacl, *inherited_sacl;
int level = 10;
if (!parent_sd || !(inherit_flags & SEC_DACL_AUTO_INHERIT)) {
@@ -330,6 +281,8 @@ static bool compute_acl(struct security_descriptor *parent_sd,
inherited_dacl = calculate_inherited_from_parent(new_sd,
parent_sd->dacl,
is_container,
+ new_sd->owner_sid,
+ new_sd->group_sid,
object_list);
}
@@ -342,6 +295,8 @@ static bool compute_acl(struct security_descriptor *parent_sd,
inherited_sacl = calculate_inherited_from_parent(new_sd,
parent_sd->sacl,
is_container,
+ new_sd->owner_sid,
+ new_sd->group_sid,
object_list);
}
@@ -349,16 +304,18 @@ static bool compute_acl(struct security_descriptor *parent_sd,
user_dacl = NULL;
user_sacl = NULL;
} else {
- tmp_dacl = clean_user_acl(new_sd, creator_sd->dacl);
- user_dacl = calculate_inherited_from_creator(new_sd,
- tmp_dacl,
- is_container,
- object_list);
- tmp_sacl = clean_user_acl(new_sd, creator_sd->sacl);
- user_sacl = calculate_inherited_from_creator(new_sd,
- tmp_sacl,
- is_container,
- object_list);
+ user_dacl = process_user_acl(new_sd,
+ creator_sd->dacl,
+ is_container,
+ new_sd->owner_sid,
+ new_sd->group_sid,
+ object_list);
+ user_sacl = process_user_acl(new_sd,
+ creator_sd->sacl,
+ is_container,
+ new_sd->owner_sid,
+ new_sd->group_sid,
+ object_list);
}
cr_descr_log_descriptor(parent_sd, __location__"parent_sd", level);
cr_descr_log_descriptor(creator_sd,__location__ "creator_sd", level);
@@ -366,7 +323,6 @@ static bool compute_acl(struct security_descriptor *parent_sd,
new_sd->dacl = security_acl_concatenate(new_sd, user_dacl, inherited_dacl);
if (new_sd->dacl) {
new_sd->type |= SEC_DESC_DACL_PRESENT;
- postprocess_acl(new_sd->dacl,new_sd->owner_sid,new_sd->group_sid,generic_map);
}
if (inherited_dacl) {
new_sd->type |= SEC_DESC_DACL_AUTO_INHERITED;
@@ -375,7 +331,6 @@ static bool compute_acl(struct security_descriptor *parent_sd,
new_sd->sacl = security_acl_concatenate(new_sd, user_sacl, inherited_sacl);
if (new_sd->sacl) {
new_sd->type |= SEC_DESC_SACL_PRESENT;
- postprocess_acl(new_sd->sacl,new_sd->owner_sid,new_sd->group_sid,generic_map);
}
if (inherited_sacl) {
new_sd->type |= SEC_DESC_SACL_AUTO_INHERITED;
generated by cgit (git 2.34.1) at 2024-11-27 20:03:10 +0000