[pitboss] phase 14: Track L.12 — Spring / Quarkus / Micronaut / Jakarta Servlet adapters

tests/dynamic_fixtures/java/micronaut_route/Vuln.java

@@ -0,0 +1,32 @@
+// Phase 14 — Micronaut `@Controller`, vulnerable.
+//
+// `@Controller("/run")` on the class + `@Get("/{id}")` on the handler
+// matches the Phase 14 [`JavaShape::MicronautRoute`].  The harness
+// invokes `show(payload)` via reflection.
+
+import io.micronaut.http.annotation.Controller;
+import io.micronaut.http.annotation.Get;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+@Controller("/run")
+public class Vuln {
+    @Get("/{id}")
+    public String show(String id) throws Exception {
+        System.out.print("__NYX_SINK_HIT__\n");
+        if (id == null) id = "";
+        String[] cmd = {"/bin/sh", "-c", "echo hello " + id};
+        Process p = Runtime.getRuntime().exec(cmd);
+        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
+        StringBuilder out = new StringBuilder();
+        String line;
+        while ((line = reader.readLine()) != null) {
+            out.append(line);
+            out.append('\n');
+            System.out.println(line);
+        }
+        p.waitFor();
+        return out.toString();
+    }
+}