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Import Debian Security Tracker CPE mappings #79

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Jun 7, 2021
Merged

Import Debian Security Tracker CPE mappings #79

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62 changes: 54 additions & 8 deletions src/main/java/eu/fasten/vulnerabilityproducer/utils/mappers/PurlMapper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
import com.google.gson.reflect.TypeToken;
import eu.fasten.vulnerabilityproducer.utils.PatchFinder;
import eu.fasten.vulnerabilityproducer.utils.Vulnerability;
import eu.fasten.vulnerabilityproducer.utils.connections.*;
import org.apache.commons.io.FileUtils;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
Expand All @@ -38,24 +39,68 @@ public class PurlMapper {
VersionRanger versionRanger;
PatchFinder patchFinder;
DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd");
public HashMap<String, String> mavenMap; // repo_url -> purl
public HashMap<String, String> pypiMap; // repo_url -> purl
public HashMap<String, String> cpeMap; // cpe_base -> repo_url
public HashMap<String, String> cpe2purl; // cpe_base -> purl
public HashMap<String, String> mavenMap; // repo_url -> purl
public HashMap<String, String> pypiMap; // repo_url -> purl
public HashMap<String, String> cpeMap; // cpe_base -> repo_url
public HashMap<String, String> debianCpeMap; // cpe_base -> purl
public HashMap<String, String> cpe2purl; // cpe_base -> purl
public String strategy;
private final Logger logger = LoggerFactory.getLogger(PurlMapper.class.getName());

public PurlMapper(VersionRanger versionRanger,
PatchFinder patchFinder,
String pathToMaps,
String inferStrategy) {
String inferStrategy,
JavaHttpClient client) {
this.versionRanger = versionRanger;
this.patchFinder = patchFinder;
this.strategy = inferStrategy;
this.mavenMap = loadReposMapFromMemory(pathToMaps + "repo_map_maven.json");
this.pypiMap = loadReposMapFromMemory(pathToMaps + "repo_map_pypi.json");
this.cpeMap = loadReposMapFromMemory(pathToMaps + "cpe_map_repos.json");
this.cpe2purl = createCpe2PurlMap(cpeMap, mavenMap, pypiMap);
this.debianCpeMap = loadDebianCPEMap(client);
this.cpe2purl = createCpe2PurlMap(cpeMap, mavenMap, pypiMap, debianCpeMap);
}

/**
* Loads the CPE list from Debian Security Advisories.
* Also handles aliases of those CPEs.
* @return cpe -> purl map.
*/
public HashMap<String, String> loadDebianCPEMap(JavaHttpClient client) {
var map = new HashMap<String, String>();
var listUrl = "https://salsa.debian.org/security-tracker-team/security-tracker/-/raw/master/data/CPE/list";
var aliasesUrl = "https://salsa.debian.org/security-tracker-team/security-tracker/-/raw/master/data/CPE/aliases";

var cpeList = client.sendGet(listUrl);
Arrays.stream(cpeList.split("\n")).forEach(line -> {
var info = line.split(";");
var pkg = info[0];
var cpe = info[1].replace("/", "2.3:");
var purl = "pkg:deb/debian/" + pkg;
map.put(cpe, purl);
});

var aliasesList = client.sendGet(aliasesUrl);
var aliases = aliasesList.split("\n");
for (int i = 0; i < aliases.length; i++) {
var line = aliases[i];
if (line.startsWith("cpe")) {
var cpeGroup = new ArrayList<String>();
while (line.startsWith("cpe")) {
cpeGroup.add(line.replace("/", "2.3:"));
i += 1;
line = aliases[i];
}
cpeGroup.forEach(cpeAlias -> {
if (map.containsKey(cpeAlias)) {
cpeGroup.forEach(cpe -> map.put(cpe, map.get(cpeAlias)));
}
});
}
}

return map;
}

private static HashMap<String, String> loadReposMapFromMemory(String path) {
Expand All @@ -80,8 +125,9 @@ private static HashMap<String, String> loadReposMapFromMemory(String path) {
*/
private HashMap<String, String> createCpe2PurlMap(HashMap<String, String> cpeMap,
HashMap<String, String> mavenMap,
HashMap<String, String> pypiMap) {
var cpe2purl = new HashMap<String, String>();
HashMap<String, String> pypiMap,
HashMap<String, String> debianCpeMap) {
var cpe2purl = debianCpeMap; // initialize to debian CPE list
cpeMap.keySet().forEach(cpe -> {
var repo = cpeMap.get(cpe);
if (mavenMap.containsKey(repo)) cpe2purl.put(cpe, mavenMap.get(repo));
Expand Down
3 changes: 2 additions & 1 deletion src/main/java/eu/fasten/vulnerabilityproducer/utils/parsers/ParserManager.java
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Expand Up @@ -79,7 +79,8 @@ public ParserManager(JavaHttpClient client,
this.ossFuzzParser = new OSSFuzzParser(mnt);
this.ghParser = new GHParser(client, ghToken, versionRanger, mnt + "/trackers/ghcursor.txt");
this.patchFinder = new PatchFinder(mongoDatabase, client, ghToken);
this.purlMapper = new PurlMapper(versionRanger, patchFinder, mnt + "/datasets/purl_maps/", inferStrategy);
this.purlMapper = new PurlMapper(versionRanger, patchFinder,
mnt + "/datasets/purl_maps/", inferStrategy, client);
this.nvdParser = new NVDParser(new JSONParser(), client, this.purlMapper, mnt);
}

Expand Down
41 changes: 39 additions & 2 deletions src/test/java/eu/fasten/vulnerabilityproducer/mappers/PurlMapperTest.java
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Expand Up @@ -19,9 +19,10 @@
package eu.fasten.vulnerabilityproducer.mappers;

import eu.fasten.vulnerabilityproducer.utils.*;
import eu.fasten.vulnerabilityproducer.utils.connections.*;
import eu.fasten.vulnerabilityproducer.utils.mappers.PurlMapper;
import eu.fasten.vulnerabilityproducer.utils.mappers.VersionRanger;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.*;
import org.mockito.Mockito;

import java.util.*;
Expand All @@ -34,7 +35,34 @@ public class PurlMapperTest {

VersionRanger vrMock = Mockito.mock(VersionRanger.class);
PatchFinder pfMock = Mockito.mock(PatchFinder.class);
PurlMapper purlMapper = new PurlMapper(vrMock, pfMock, "./src/test/resources/purl_maps/", "both");
JavaHttpClient client = Mockito.mock(JavaHttpClient.class);
PurlMapper purlMapper;

@BeforeEach
public void init() {
var listUrl = "https://salsa.debian.org/security-tracker-team/security-tracker/-/raw/master/data/CPE/list";
var aliasesUrl = "https://salsa.debian.org/security-tracker-team/security-tracker/-/raw/master/data/CPE/aliases";

var cpeList = "" +
"a2ps;cpe:/a:gnu:a2ps\n" +
"abc2ps;cpe:/a:abc2ps:abc2ps\n" +
"asterisk;cpe:/a:digium:asterisk\n";
var aliasesList = "" +
"#\n" +
"# Comments\n" +
"#\n" +
"cpe:/a:asterisk:asterisk\n" +
"cpe:/a:asterisk:open_source\n" +
"cpe:/a:asterisk:p_b_x\n" +
"cpe:/a:digium:asterisk\n" +
"cpe:/a:asterisk:opensource\n" +
"\n" +
"# End comment\n";
when(client.sendGet(listUrl)).thenReturn(cpeList);
when(client.sendGet(aliasesUrl)).thenReturn(aliasesList);

purlMapper = new PurlMapper(vrMock, pfMock, "./src/test/resources/purl_maps/", "both", client);
}

@Test
public void getBasePurlTest() {
Expand All @@ -52,6 +80,15 @@ public void creationCPE2PURLMap() {
assertEquals("pkg:maven/org.google.guava/guava", purlMapper.cpe2purl.get("cpe:2.3:a:google:guava"));
}

@Test
public void importDebianCPE() {
assertTrue(purlMapper.cpe2purl.containsKey("cpe:2.3:a:gnu:a2ps"));
assertEquals("pkg:deb/debian/a2ps", purlMapper.cpe2purl.get("cpe:2.3:a:gnu:a2ps"));

assertTrue(purlMapper.cpe2purl.containsKey("cpe:2.3:a:asterisk:opensource"));
assertEquals("pkg:deb/debian/asterisk", purlMapper.cpe2purl.get("cpe:2.3:a:asterisk:opensource"));
}

// repo2purl
@Test
public void inferPurlPyPIMap() {
Expand Down