whitepaper: 312 sites / 151 ecosystems — wave2+3 defect tables and PDF rebuild
Add 88 new defect entries to HIGH and MEDIUM tables:
HIGH: mysql-0001/0002, mariadb-0001, redis-0001/0002, valkey-0001/0002, openvpn-0001,
vlc-0001, prometheus-0001, otel-collector-0001, cockroachdb-0001..0004,
tidb-0001..0008, kubernetes-0001/0002, go-0001, kotlin-0002, scala-0001,
allegro5-0001, sdl2-0001, grafana-0001, clickhouse-0001, duckdb-0001,
mongodb-0001, envoy-0001, istio-0001, cilium-0001, linkerd2-0001,
linux-0001/0002/0003, tor-0002/0003, curl-0001, julia-0001, lua-0001,
perl5-0001, nats-0001, spring-0003/0004, tomcat-0001, onos-0002, odl-0002
MEDIUM: helm-0001, mariadb-0002, openssl-0001/0002, memcached-0001,
cassandra-0001..0004, flink-0001, storm-0001/0002, zookeeper-0001..0003,
pip-0001, gradle-0001, nginx-0001, haproxy-0001, caddy-0001, varnish-0001,
ffmpeg-0001, gstreamer-0001, raylib-0001, love2d-0001, php-0001/0002,
r-source-0001, cpython-0002, ruby-0001, rabbitmq-0003/0004, activemq-0001,
ovs-0001, onos-0003, odl-0002, jetty-0001
PDF: 976K
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260 changed files with 18278 additions and 15 deletions
370
defects/spring/unit/SpringEventMulticasterTest.java
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370
defects/spring/unit/SpringEventMulticasterTest.java
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package unit;
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import java.util.ArrayList;
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import java.util.LinkedHashSet;
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import java.util.List;
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/**
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* Unit tests for CWE-407 defects in Spring Framework.
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*
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* spring-0003 (HIGH): AbstractApplicationEventMulticaster.retrieveApplicationListeners()
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* builds allListeners as ArrayList. Inside the O(L) listenerBeans loop it calls
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* allListeners.contains() twice (lines 279, 285). Total O(L × (P+L)) = O(n²).
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* Hit on every event dispatch cache-miss.
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*
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* spring-0004 (MEDIUM): DefaultListenerRetriever.getApplicationListeners() has the
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* same pattern — ArrayList allListeners, allListeners.contains(listener) in loop
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* over applicationListenerBeans (line 512).
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*
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* Run: java -ea -cp . unit.SpringEventMulticasterTest
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*/
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public class SpringEventMulticasterTest {
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// -----------------------------------------------------------------------
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// Listener model — identity-equal objects (like ApplicationListener instances)
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// -----------------------------------------------------------------------
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static final class Listener {
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final String name;
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final boolean isProxy;
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final Listener target; // non-null if this is a proxy
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Listener(String name) { this.name = name; this.isProxy = false; this.target = null; }
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Listener(String name, Listener target) { this.name = name; this.isProxy = true; this.target = target; }
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@Override public String toString() { return (isProxy ? "Proxy(" : "Listener(") + name + ")"; }
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}
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// -----------------------------------------------------------------------
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// spring-0003 model: retrieveApplicationListeners() — ArrayList vs LinkedHashSet
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// -----------------------------------------------------------------------
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static final class DefectiveRetriever {
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long containsProbes = 0;
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/** Models the defective retrieveApplicationListeners() inner loop. */
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List<Listener> retrieve(List<Listener> programmatic, List<Listener[]> beanListeners) {
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// allListeners starts with programmatic listeners
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List<Listener> allListeners = new ArrayList<>(programmatic);
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for (Listener[] pair : beanListeners) {
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// pair[0] = proxy, pair[1] = unwrapped target (or same if not proxy)
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Listener listener = pair[0];
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Listener unwrapped = pair[1];
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if (listener != unwrapped) {
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// Line 279: allListeners.contains(unwrappedListener)
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containsProbes += allListeners.size(); // O(n) scan
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if (allListeners.contains(unwrapped)) {
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allListeners.remove(unwrapped);
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allListeners.add(listener);
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continue;
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}
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}
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// Line 285: !allListeners.contains(listener)
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containsProbes += allListeners.size(); // O(n) scan
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if (!allListeners.contains(listener)) {
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allListeners.add(listener);
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}
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}
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return allListeners;
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}
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}
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static final class FixedRetriever {
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long containsProbes = 0;
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/** Models the fixed retrieveApplicationListeners() using LinkedHashSet. */
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List<Listener> retrieve(List<Listener> programmatic, List<Listener[]> beanListeners) {
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LinkedHashSet<Listener> allListenerSet = new LinkedHashSet<>(programmatic);
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for (Listener[] pair : beanListeners) {
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Listener listener = pair[0];
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Listener unwrapped = pair[1];
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if (listener != unwrapped) {
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containsProbes += 1; // O(1) LinkedHashSet.remove()
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if (allListenerSet.remove(unwrapped)) {
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allListenerSet.add(listener);
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continue;
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}
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}
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containsProbes += 1; // O(1) LinkedHashSet.contains()
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if (!allListenerSet.contains(listener)) {
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allListenerSet.add(listener);
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}
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}
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return new ArrayList<>(allListenerSet);
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}
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}
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// -----------------------------------------------------------------------
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// spring-0004 model: DefaultListenerRetriever.getApplicationListeners()
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// -----------------------------------------------------------------------
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static final class DefectiveDefaultRetriever {
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long containsProbes = 0;
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List<Listener> getListeners(List<Listener> programmatic, List<Listener> beanListeners) {
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List<Listener> allListeners = new ArrayList<>(programmatic);
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for (Listener l : beanListeners) {
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containsProbes += allListeners.size(); // O(n) scan — line 512
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if (!allListeners.contains(l)) {
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allListeners.add(l);
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}
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}
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return allListeners;
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}
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}
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static final class FixedDefaultRetriever {
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long containsProbes = 0;
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List<Listener> getListeners(List<Listener> programmatic, List<Listener> beanListeners) {
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LinkedHashSet<Listener> allListenerSet = new LinkedHashSet<>(programmatic);
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for (Listener l : beanListeners) {
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containsProbes += 1; // O(1) LinkedHashSet.add()
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allListenerSet.add(l);
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}
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return new ArrayList<>(allListenerSet);
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}
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}
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// -----------------------------------------------------------------------
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// Test 1 — spring-0003 correctness: proxy replacement and dedup
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// -----------------------------------------------------------------------
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static void test1_spring0003_correctness() {
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Listener a = new Listener("A");
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Listener b = new Listener("B");
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Listener bProxy = new Listener("B-proxy", b); // proxy wrapping b
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List<Listener> programmatic = List.of(a, b);
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// beanListeners: a proxy for b (should replace b in the list)
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List<Listener[]> beanListeners = new ArrayList<>();
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beanListeners.add(new Listener[]{bProxy, b});
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DefectiveRetriever def = new DefectiveRetriever();
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FixedRetriever fix = new FixedRetriever();
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List<Listener> defResult = def.retrieve(programmatic, beanListeners);
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List<Listener> fixResult = fix.retrieve(programmatic, beanListeners);
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assert defResult.size() == fixResult.size()
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: "spring-0003 correctness: size differs def=" + defResult.size() + " fix=" + fixResult.size();
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assert defResult.equals(fixResult)
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: "spring-0003 correctness: listener lists differ: def=" + defResult + " fix=" + fixResult;
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// b should be replaced by bProxy
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assert !fixResult.contains(b)
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: "spring-0003 correctness: bare b should be replaced by proxy";
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assert fixResult.contains(bProxy)
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: "spring-0003 correctness: bProxy should be present";
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System.out.println("PASS test1_spring0003_correctness: proxy replacement correct, size=" + fixResult.size());
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}
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// -----------------------------------------------------------------------
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// Test 2 — spring-0003 complexity: O(n²) vs O(n) probes
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// -----------------------------------------------------------------------
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static void test2_spring0003_complexity_ratio() {
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int small = 50;
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int large = 500;
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// Build inputs: P programmatic listeners, L bean listeners (all unique, no proxies)
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List<Listener> smallProg = new ArrayList<>(), largeProg = new ArrayList<>();
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List<Listener[]> smallBean = new ArrayList<>(), largeBean = new ArrayList<>();
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for (int i = 0; i < small; i++) {
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smallProg.add(new Listener("prog-" + i));
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}
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for (int i = 0; i < small; i++) {
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Listener l = new Listener("bean-" + i);
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smallBean.add(new Listener[]{l, l}); // no proxy
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}
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for (int i = 0; i < large; i++) {
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largeProg.add(new Listener("prog-" + i));
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}
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for (int i = 0; i < large; i++) {
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Listener l = new Listener("bean-" + i);
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largeBean.add(new Listener[]{l, l});
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}
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DefectiveRetriever defSmall = new DefectiveRetriever();
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DefectiveRetriever defLarge = new DefectiveRetriever();
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FixedRetriever fixSmall = new FixedRetriever();
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FixedRetriever fixLarge = new FixedRetriever();
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defSmall.retrieve(smallProg, smallBean);
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defLarge.retrieve(largeProg, largeBean);
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fixSmall.retrieve(smallProg, smallBean);
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fixLarge.retrieve(largeProg, largeBean);
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double defRatio = (double) defLarge.containsProbes / defSmall.containsProbes;
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double fixRatio = (double) fixLarge.containsProbes / fixSmall.containsProbes;
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System.out.printf(" defective probes: small=%d large=%d ratio=%.1fx%n",
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defSmall.containsProbes, defLarge.containsProbes, defRatio);
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System.out.printf(" fixed probes: small=%d large=%d ratio=%.1fx%n",
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fixSmall.containsProbes, fixLarge.containsProbes, fixRatio);
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assert defRatio > 50.0
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: "spring-0003 complexity: defective ratio should be >50x, got " + defRatio;
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assert fixRatio < 20.0
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: "spring-0003 complexity: fixed ratio should be <20x, got " + fixRatio;
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System.out.printf("PASS test2_spring0003_complexity_ratio: defective=%.0fx fixed=%.0fx%n", defRatio, fixRatio);
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}
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// -----------------------------------------------------------------------
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// Test 3 — spring-0003 absolute counts at N=200
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// -----------------------------------------------------------------------
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static void test3_spring0003_absolute_counts() {
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int P = 100, L = 100; // 100 programmatic + 100 bean listeners, all unique
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List<Listener> prog = new ArrayList<>();
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List<Listener[]> bean = new ArrayList<>();
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for (int i = 0; i < P; i++) prog.add(new Listener("prog-" + i));
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for (int i = 0; i < L; i++) {
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Listener l = new Listener("bean-" + i);
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bean.add(new Listener[]{l, l});
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}
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DefectiveRetriever def = new DefectiveRetriever();
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FixedRetriever fix = new FixedRetriever();
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def.retrieve(prog, bean);
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fix.retrieve(prog, bean);
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// Defective: each of L iterations checks list of size (P+0..L-1) twice
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// Lower bound: L * P probes (at minimum the initial P listeners are scanned)
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long expectedDefMin = (long) L * P;
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assert def.containsProbes >= expectedDefMin
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: "spring-0003 counts: defective probes=" + def.containsProbes + " expected>=" + expectedDefMin;
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// Fixed: exactly L probes (one per bean listener)
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assert fix.containsProbes == L
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: "spring-0003 counts: fixed probes=" + fix.containsProbes + " expected=" + L;
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long speedup = def.containsProbes / fix.containsProbes;
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System.out.printf("PASS test3_spring0003_absolute_counts: defective=%d fixed=%d speedup=%dx%n",
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def.containsProbes, fix.containsProbes, speedup);
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}
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// -----------------------------------------------------------------------
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// Test 4 — spring-0004 correctness
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// -----------------------------------------------------------------------
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static void test4_spring0004_correctness() {
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Listener a = new Listener("A"), b = new Listener("B"), c = new Listener("C");
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List<Listener> programmatic = List.of(a, b);
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List<Listener> beanListeners = List.of(b, c); // b is duplicate
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DefectiveDefaultRetriever def = new DefectiveDefaultRetriever();
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FixedDefaultRetriever fix = new FixedDefaultRetriever();
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List<Listener> defResult = def.getListeners(programmatic, beanListeners);
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List<Listener> fixResult = fix.getListeners(programmatic, beanListeners);
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assert defResult.size() == 3
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: "spring-0004 correctness: defective size=" + defResult.size() + " expected=3";
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assert fixResult.size() == 3
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: "spring-0004 correctness: fixed size=" + fixResult.size() + " expected=3";
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assert defResult.equals(fixResult)
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: "spring-0004 correctness: results differ def=" + defResult + " fix=" + fixResult;
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System.out.println("PASS test4_spring0004_correctness: size=3, dedup correct");
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}
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// -----------------------------------------------------------------------
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// Test 5 — spring-0004 complexity ratio
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// -----------------------------------------------------------------------
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static void test5_spring0004_complexity_ratio() {
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int small = 50, large = 500;
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List<Listener> smallProg = new ArrayList<>(), largeProg = new ArrayList<>();
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List<Listener> smallBean = new ArrayList<>(), largeBean = new ArrayList<>();
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for (int i = 0; i < small; i++) smallProg.add(new Listener("p" + i));
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for (int i = 0; i < small; i++) smallBean.add(new Listener("b" + i));
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for (int i = 0; i < large; i++) largeProg.add(new Listener("p" + i));
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for (int i = 0; i < large; i++) largeBean.add(new Listener("b" + i));
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DefectiveDefaultRetriever defSmall = new DefectiveDefaultRetriever();
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DefectiveDefaultRetriever defLarge = new DefectiveDefaultRetriever();
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FixedDefaultRetriever fixSmall = new FixedDefaultRetriever();
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FixedDefaultRetriever fixLarge = new FixedDefaultRetriever();
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defSmall.getListeners(smallProg, smallBean);
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defLarge.getListeners(largeProg, largeBean);
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fixSmall.getListeners(smallProg, smallBean);
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fixLarge.getListeners(largeProg, largeBean);
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double defRatio = (double) defLarge.containsProbes / defSmall.containsProbes;
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double fixRatio = (double) fixLarge.containsProbes / fixSmall.containsProbes;
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System.out.printf(" defective probes: small=%d large=%d ratio=%.1fx%n",
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defSmall.containsProbes, defLarge.containsProbes, defRatio);
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System.out.printf(" fixed probes: small=%d large=%d ratio=%.1fx%n",
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fixSmall.containsProbes, fixLarge.containsProbes, fixRatio);
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assert defRatio > 50.0
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: "spring-0004 complexity: defective ratio should be >50x, got " + defRatio;
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assert fixRatio < 20.0
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: "spring-0004 complexity: fixed ratio should be <20x, got " + fixRatio;
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System.out.printf("PASS test5_spring0004_complexity_ratio: defective=%.0fx fixed=%.0fx%n", defRatio, fixRatio);
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}
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// -----------------------------------------------------------------------
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// Test 6 — spring-0004 absolute counts at N=200
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// -----------------------------------------------------------------------
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static void test6_spring0004_absolute_counts() {
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int P = 100, L = 100;
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List<Listener> prog = new ArrayList<>(), bean = new ArrayList<>();
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for (int i = 0; i < P; i++) prog.add(new Listener("p" + i));
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for (int i = 0; i < L; i++) bean.add(new Listener("b" + i)); // all unique
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DefectiveDefaultRetriever def = new DefectiveDefaultRetriever();
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FixedDefaultRetriever fix = new FixedDefaultRetriever();
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def.getListeners(prog, bean);
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fix.getListeners(prog, bean);
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long expectedDefMin = (long) L * P;
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assert def.containsProbes >= expectedDefMin
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: "spring-0004 counts: defective probes=" + def.containsProbes + " expected>=" + expectedDefMin;
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assert fix.containsProbes == L
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: "spring-0004 counts: fixed probes=" + fix.containsProbes + " expected=" + L;
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System.out.printf("PASS test6_spring0004_absolute_counts: defective=%d fixed=%d speedup=%dx%n",
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def.containsProbes, fix.containsProbes, def.containsProbes / fix.containsProbes);
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}
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// -----------------------------------------------------------------------
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// main
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// -----------------------------------------------------------------------
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public static void main(String[] args) {
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System.out.println("=== SpringEventMulticasterTest — CWE-407 spring-0003 / spring-0004 ===");
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int passed = 0, failed = 0;
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Runnable[] tests = {
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SpringEventMulticasterTest::test1_spring0003_correctness,
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SpringEventMulticasterTest::test2_spring0003_complexity_ratio,
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SpringEventMulticasterTest::test3_spring0003_absolute_counts,
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SpringEventMulticasterTest::test4_spring0004_correctness,
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SpringEventMulticasterTest::test5_spring0004_complexity_ratio,
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SpringEventMulticasterTest::test6_spring0004_absolute_counts,
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};
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for (Runnable test : tests) {
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try {
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test.run();
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passed++;
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} catch (AssertionError e) {
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System.out.println("FAIL: " + e.getMessage());
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failed++;
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}
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}
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System.out.println("---");
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System.out.println("Results: " + passed + " passed, " + failed + " failed");
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if (failed > 0) System.exit(1);
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}
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}
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