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FGAP v2 parent group children endpoint bypasses per-child view permis… #50915

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Merged
ahus1 merged 1 commit into from
Jul 16, 2026
Merged

FGAP v2 parent group children endpoint bypasses per-child view permis… #50915

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1 change: 1 addition & 0 deletions services/src/main/java/org/keycloak/services/resources/admin/GroupResource.java
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Original file line number Diff line number Diff line change
Expand Up @@ -187,6 +187,7 @@ public Stream<GroupRepresentation> getSubGroups(
@Parameter(description = "The maximum number of results that are to be returned. Defaults to 10") @QueryParam("max") @DefaultValue("10") Integer max,
@Parameter(description = "Boolean which defines whether brief groups representations are returned or not (default: false)") @QueryParam("briefRepresentation") @DefaultValue("false") Boolean briefRepresentation,
@Parameter(description = "Boolean which defines whether to return the count of subgroups for each subgroup of this group (default: true)") @QueryParam("subGroupsCount") @DefaultValue("true") Boolean subGroupsCount) {
this.auth.groups().requireList();
this.auth.groups().requireView(group);

Stream<GroupModel> stream = group.getSubGroupsStream(search, exact, -1, -1);
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91 changes: 91 additions & 0 deletions ...se/src/test/java/org/keycloak/tests/admin/authz/fgap/GroupResourceTypeEvaluationTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
package org.keycloak.tests.admin.authz.fgap;

import java.util.List;
import java.util.Map;
import java.util.Set;

import jakarta.ws.rs.ForbiddenException;
Expand All @@ -27,6 +28,8 @@
import org.keycloak.admin.client.Keycloak;
import org.keycloak.admin.client.resource.GroupsResource;
import org.keycloak.authorization.fgap.AdminPermissionsSchema;
import org.keycloak.models.AdminRoles;
import org.keycloak.models.Constants;
import org.keycloak.representations.idm.GroupRepresentation;
import org.keycloak.representations.idm.RoleRepresentation;
import org.keycloak.representations.idm.UserRepresentation;
Expand Down Expand Up @@ -477,6 +480,94 @@ public void testImpersonateMembersFromChildGroups() {
realmAdminClient.tokenManager().logout();
}

@Test
public void testChildrenEndpointRequiresQueryRole() {
GroupRepresentation parentGroup = createGroup("parent-group");

GroupRepresentation hiddenChildGroup = new GroupRepresentation();
hiddenChildGroup.setName("hidden-child-group");
try (Response response = realm.admin().groups().group(parentGroup.getId()).subGroup(hiddenChildGroup)) {
hiddenChildGroup.setId(ApiUtil.getCreatedId(response));
}
hiddenChildGroup.setAttributes(Map.of("hidden", List.of("child-secret-attr")));
realm.admin().groups().group(hiddenChildGroup.getId()).update(hiddenChildGroup);

UserRepresentation myadmin = realm.admin().users().search("myadmin").get(0);

// remove all query roles from myadmin
String realmMgmtId = realm.admin().clients().findByClientId(Constants.REALM_MANAGEMENT_CLIENT_ID).get(0).getId();
List<RoleRepresentation> queryRoles = List.of(AdminRoles.QUERY_USERS, AdminRoles.QUERY_GROUPS, AdminRoles.QUERY_CLIENTS).stream()
.map(roleName -> realm.admin().clients().get(realmMgmtId).roles().get(roleName).toRepresentation())
.toList();
realm.admin().users().get(myadmin.getId()).roles().clientLevel(realmMgmtId).remove(queryRoles);

UserPolicyRepresentation policy = createUserPolicy(realm, adminPermissionsClient, "Only My Admin User Policy", myadmin.getId());
createGroupPermission(parentGroup, Set.of(VIEW), policy);

// limited admin can still view parent group directly (requireView passes via FGAP)
realmAdminClient.realm(realm.getName()).groups().group(parentGroup.getId()).toRepresentation();

// children endpoint requires query role — should be forbidden without it
try {
realmAdminClient.realm(realm.getName()).groups().group(parentGroup.getId()).getSubGroups(-1, -1, false);
fail("Should not be able to list children without query role");
} catch (Exception ex) {
assertThat(ex, instanceOf(ForbiddenException.class));
}

try {
realmAdminClient.realm(realm.getName()).groups().group(parentGroup.getId()).getSubGroups("hidden-child-group", true, -1, -1, false);
fail("Should not be able to search children without query role");
} catch (Exception ex) {
assertThat(ex, instanceOf(ForbiddenException.class));
}
}

@Test
public void testChildrenEndpointFilteredByGroupPermissions() {
GroupRepresentation parentGroup = createGroup("parent-group");

GroupRepresentation hiddenChildGroup = new GroupRepresentation();
hiddenChildGroup.setName("hidden-child-group");
try (Response response = realm.admin().groups().group(parentGroup.getId()).subGroup(hiddenChildGroup)) {
hiddenChildGroup.setId(ApiUtil.getCreatedId(response));
}
hiddenChildGroup.setAttributes(Map.of("hidden", List.of("child-secret-attr")));
realm.admin().groups().group(hiddenChildGroup.getId()).update(hiddenChildGroup);

UserRepresentation myadmin = realm.admin().users().search("myadmin").get(0);
UserPolicyRepresentation policy = createUserPolicy(realm, adminPermissionsClient, "Only My Admin User Policy", myadmin.getId());
createGroupPermission(parentGroup, Set.of(VIEW), policy);

// limited admin can view parent group
realmAdminClient.realm(realm.getName()).groups().group(parentGroup.getId()).toRepresentation();

// limited admin cannot view hidden child group directly
try {
realmAdminClient.realm(realm.getName()).groups().group(hiddenChildGroup.getId()).toRepresentation();
fail("Should not be able to access hidden child group directly");
} catch (Exception ex) {
assertThat(ex, instanceOf(ForbiddenException.class));
}

// searching for hidden child group by name returns empty
List<GroupRepresentation> search = realmAdminClient.realm(realm.getName()).groups().groups("hidden-child-group", -1, -1, false);
assertTrue(search.isEmpty());

// children endpoint must not return hidden child group (partial evaluator filters it)
List<GroupRepresentation> children = realmAdminClient.realm(realm.getName()).groups().group(parentGroup.getId()).getSubGroups(-1, -1, false);
assertTrue(children.isEmpty());

// exact name search via children endpoint must not return hidden child group
children = realmAdminClient.realm(realm.getName()).groups().group(parentGroup.getId()).getSubGroups("hidden-child-group", true, -1, -1, false);
assertTrue(children.isEmpty());

// full admin still sees the child
List<GroupRepresentation> adminChildren = realm.admin().groups().group(parentGroup.getId()).getSubGroups(-1, -1, false);
assertThat(adminChildren, hasSize(1));
assertEquals("hidden-child-group", adminChildren.get(0).getName());
}

private ScopePermissionRepresentation createAllGroupsPermission(UserPolicyRepresentation policy, Set<String> scopes) {
return createAllPermission(adminPermissionsClient, AdminPermissionsSchema.GROUPS_RESOURCE_TYPE, policy, scopes);
}
Expand Down
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