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Fix bug where admin can read system index #4774

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Oct 3, 2024
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Original file line number Diff line number Diff line change
Expand Up @@ -80,4 +80,29 @@ public void adminShouldNotBeAbleToDeleteSecurityIndex() {
assertThat(response4.getStatusCode(), equalTo(RestStatus.FORBIDDEN.getStatus()));
}
}

@Test
public void regularUserShouldGetNoResultsWhenSearchingSystemIndex() {
// Create system index and index a dummy document as the super admin user, data returned to super admin
try (TestRestClient client = cluster.getRestClient(cluster.getAdminCertificate())) {
HttpResponse response1 = client.put(".system-index1");

assertThat(response1.getStatusCode(), equalTo(RestStatus.OK.getStatus()));
String doc = "{\"field\":\"value\"}";
HttpResponse adminPostResponse = client.postJson(".system-index1/_doc/1?refresh=true", doc);
assertThat(adminPostResponse.getStatusCode(), equalTo(RestStatus.CREATED.getStatus()));
HttpResponse response2 = client.get(".system-index1/_search");

assertThat(response2.getStatusCode(), equalTo(RestStatus.OK.getStatus()));
assertThat(response2.getBody(), response2.getBody().contains("\"hits\":{\"total\":{\"value\":1,\"relation\":\"eq\"}"));
}

// Regular users should not be able to read it
try (TestRestClient client = cluster.getRestClient(USER_ADMIN)) {
// regular user cannot read system index
HttpResponse response1 = client.get(".system-index1/_search");

assertThat(response1.getBody(), response1.getBody().contains("\"hits\":{\"total\":{\"value\":0,\"relation\":\"eq\"}"));
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}
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@
import org.opensearch.security.support.HeaderHelper;
import org.opensearch.security.support.SecurityUtils;

public class SecurityFlsDlsIndexSearcherWrapper extends SecurityIndexSearcherWrapper {
public class SecurityFlsDlsIndexSearcherWrapper extends SystemIndexSearcherWrapper {

public final Logger log = LogManager.getLogger(this.getClass());

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@
import org.opensearch.core.common.transport.TransportAddress;
import org.opensearch.core.index.Index;
import org.opensearch.index.IndexService;
import org.opensearch.indices.SystemIndexRegistry;
import org.opensearch.security.privileges.PrivilegesEvaluator;
import org.opensearch.security.securityconf.ConfigModel;
import org.opensearch.security.securityconf.SecurityRoles;
Expand All @@ -49,7 +50,7 @@

import org.greenrobot.eventbus.Subscribe;

public class SecurityIndexSearcherWrapper implements CheckedFunction<DirectoryReader, DirectoryReader, IOException> {
public class SystemIndexSearcherWrapper implements CheckedFunction<DirectoryReader, DirectoryReader, IOException> {

protected final Logger log = LogManager.getLogger(this.getClass());
protected final ThreadContext threadContext;
Expand All @@ -68,7 +69,7 @@ public class SecurityIndexSearcherWrapper implements CheckedFunction<DirectoryRe
private final Boolean systemIndexPermissionEnabled;

// constructor is called per index, so avoid costly operations here
public SecurityIndexSearcherWrapper(
public SystemIndexSearcherWrapper(
final IndexService indexService,
final Settings settings,
final AdminDNs adminDNs,
Expand Down Expand Up @@ -152,7 +153,8 @@ protected final boolean isBlockedProtectedIndexRequest() {
}

protected final boolean isBlockedSystemIndexRequest() {
boolean isSystemIndex = systemIndexMatcher.test(index.getName());
boolean matchesSystemIndexRegisteredWithCore = !SystemIndexRegistry.matchesSystemIndexPattern(Set.of(index.getName())).isEmpty();
boolean isSystemIndex = systemIndexMatcher.test(index.getName()) || matchesSystemIndexRegisteredWithCore;
if (!isSystemIndex) {
return false;
}
Expand All @@ -161,7 +163,7 @@ protected final boolean isBlockedSystemIndexRequest() {
final User user = threadContext.getTransient(ConfigConstants.OPENDISTRO_SECURITY_USER);
if (user == null) {
// allow request without user from plugin.
return systemIndexMatcher.test(index.getName());
return systemIndexMatcher.test(index.getName()) || matchesSystemIndexRegisteredWithCore;
}
final TransportAddress caller = threadContext.getTransient(ConfigConstants.OPENDISTRO_SECURITY_REMOTE_ADDRESS);
final Set<String> mappedRoles = evaluator.mapRoles(user, caller);
Expand Down
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