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return rule fields which do not have aliases (#652)
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* return rule fields which do not have aliases

Signed-off-by: Subhobrata Dey <[email protected]>

* return rule fields which do not have aliases

Signed-off-by: Subhobrata Dey <[email protected]>

---------

Signed-off-by: Subhobrata Dey <[email protected]>
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@sbcd90
sbcd90 authored Oct 26, 2023
1 parent 884ddd0 commit 92a620d
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Showing 3 changed files with 82 additions and 4 deletions.
2 changes: 2 additions & 0 deletions src/main/java/org/opensearch/securityanalytics/mapper/MapperService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -515,6 +515,8 @@ public void onResponse(GetMappingsResponse getMappingsResponse) {
aliasMappingFields.put(mapping.getEcs(), Map.of("type", "alias", "path", mapping.getOcsf()));
} else if (mapping.getEcs() != null) {
aliasMappingFields.put(mapping.getEcs(), Map.of("type", "alias", "path", mapping.getRawField()));
} else if (mapping.getEcs() == null) {
aliasMappingFields.put(mapping.getRawField(), Map.of("type", "alias", "path", mapping.getRawField()));
}
}
aliasMappingsObj.field("properties", aliasMappingFields);
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29 changes: 29 additions & 0 deletions src/test/java/org/opensearch/securityanalytics/TestHelpers.java
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Expand Up @@ -259,6 +259,35 @@ public static String randomRule() {
"level: high";
}

public static String randomRuleForMappingView(String field) {
return "title: Remote Encrypting File System Abuse\n" +
"id: 5f92fff9-82e2-48eb-8fc1-8b133556a551\n" +
"description: Detects remote RPC calls to possibly abuse remote encryption service via MS-EFSR\n" +
"references:\n" +
" - https://attack.mitre.org/tactics/TA0008/\n" +
" - https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36942\n" +
" - https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/main/documents/MS-EFSR.md\n" +
" - https://github.com/zeronetworks/rpcfirewall\n" +
" - https://zeronetworks.com/blog/stopping_lateral_movement_via_the_rpc_firewall/\n" +
"tags:\n" +
" - attack.defense_evasion\n" +
"status: experimental\n" +
"author: Sagie Dulce, Dekel Paz\n" +
"date: 2022/01/01\n" +
"modified: 2022/01/01\n" +
"logsource:\n" +
" product: rpc_firewall\n" +
" category: application\n" +
" definition: 'Requirements: install and apply the RPC Firewall to all processes with \"audit:true action:block uuid:df1941c5-fe89-4e79-bf10-463657acf44d or c681d488-d850-11d0-8c52-00c04fd90f7e'\n" +
"detection:\n" +
" selection:\n" +
" "+ field + ": 'ACL'\n" +
" condition: selection\n" +
"falsepositives:\n" +
" - Legitimate usage of remote file encryption\n" +
"level: high";
}

public static String randomRuleForCustomLogType() {
return "title: Remote Encrypting File System Abuse\n" +
"id: 5f92fff9-82e2-48eb-8fc1-8b133556a551\n" +
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55 changes: 51 additions & 4 deletions src/test/java/org/opensearch/securityanalytics/resthandler/RuleRestApiIT.java
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Expand Up @@ -22,17 +22,13 @@
import org.opensearch.securityanalytics.SecurityAnalyticsPlugin;
import org.opensearch.securityanalytics.SecurityAnalyticsRestTestCase;
import org.opensearch.securityanalytics.config.monitors.DetectorMonitorConfig;
import org.opensearch.securityanalytics.logtype.BuiltinLogTypeLoader;
import org.opensearch.securityanalytics.model.Detector;
import org.opensearch.securityanalytics.model.DetectorInput;
import org.opensearch.securityanalytics.model.DetectorRule;
import org.opensearch.securityanalytics.model.Rule;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
Expand All @@ -47,6 +43,7 @@
import static org.opensearch.securityanalytics.TestHelpers.randomEditedRule;
import static org.opensearch.securityanalytics.TestHelpers.randomIndex;
import static org.opensearch.securityanalytics.TestHelpers.randomRule;
import static org.opensearch.securityanalytics.TestHelpers.randomRuleForMappingView;
import static org.opensearch.securityanalytics.TestHelpers.randomRuleWithErrors;
import static org.opensearch.securityanalytics.TestHelpers.windowsIndexMapping;

Expand Down Expand Up @@ -841,4 +838,54 @@ public void testGetAllRuleCategories() throws IOException {
assertTrue(categories.stream().anyMatch(e -> ((Map<String, Object>)e).get("key").equals("linux")));
assertTrue(categories.stream().anyMatch(e -> ((Map<String, Object>)e).get("key").equals("waf")));
}

@SuppressWarnings("unchecked")
public void testGetMappingsViewApiForFieldAliasesWithSameName() throws IOException {
String index = createTestIndex(randomIndex(), windowsIndexMapping());
// Execute GetMappingsViewAction to add alias mapping for index
Request request = new Request("GET", SecurityAnalyticsPlugin.MAPPINGS_VIEW_BASE_URI);
// both req params and req body are supported
request.addParameter("index_name", index);
request.addParameter("rule_topic", randomDetectorType());
Response response = client().performRequest(request);
assertEquals(HttpStatus.SC_OK, response.getStatusLine().getStatusCode());
Map<String, Object> respMap = responseAsMap(response);
Assert.assertTrue(((List<String>) respMap.get("unmapped_index_fields")).contains("AccessList"));

String rule = randomRuleForMappingView("AccessList");

Response createResponse = makeRequest(client(), "POST", SecurityAnalyticsPlugin.RULE_BASE_URI, Collections.singletonMap("category", randomDetectorType()),
new StringEntity(rule), new BasicHeader("Content-Type", "application/json"));
Assert.assertEquals("Create rule failed", RestStatus.CREATED, restStatus(createResponse));
Map<String, Object> responseBody = asMap(createResponse);
String createdId = responseBody.get("_id").toString();

// Execute GetMappingsViewAction to add alias mapping for index
request = new Request("GET", SecurityAnalyticsPlugin.MAPPINGS_VIEW_BASE_URI);
// both req params and req body are supported
request.addParameter("index_name", index);
request.addParameter("rule_topic", randomDetectorType());
response = client().performRequest(request);
assertEquals(HttpStatus.SC_OK, response.getStatusLine().getStatusCode());
respMap = responseAsMap(response);
Assert.assertTrue(((Map<String, Object>) respMap.get("properties")).containsKey("AccessList"));

rule = randomRuleForMappingView("Access_List");

Response updateResponse = makeRequest(client(), "PUT", SecurityAnalyticsPlugin.RULE_BASE_URI + "/" + createdId,
Map.of("category", randomDetectorType()),
new StringEntity(rule), new BasicHeader("Content-Type", "application/json"));
Assert.assertEquals("Update rule failed", RestStatus.OK, restStatus(updateResponse));

// Execute GetMappingsViewAction to add alias mapping for index
request = new Request("GET", SecurityAnalyticsPlugin.MAPPINGS_VIEW_BASE_URI);
// both req params and req body are supported
request.addParameter("index_name", index);
request.addParameter("rule_topic", randomDetectorType());
response = client().performRequest(request);
assertEquals(HttpStatus.SC_OK, response.getStatusLine().getStatusCode());
respMap = responseAsMap(response);
Assert.assertTrue(((List<String>) respMap.get("unmapped_field_aliases")).contains("Access_List"));
Assert.assertTrue(((Map<String, Object>) respMap.get("properties")).containsKey("AccessList"));
}
}

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