[pitboss] phase 07: Track J.5 + Track L.5 — XPATH_INJECTION corpus + XPath / DOM / lxml adapters

tests/dynamic_fixtures/xpath_injection/php/vuln.php

@@ -0,0 +1,15 @@
+<?php
+// Phase 07 (Track J.5) — PHP XPATH_INJECTION vuln fixture.
+//
+// The function string-concatenates the attacker-controlled `$name`
+// directly into an XPath expression evaluated by `DOMXPath::query`.
+// A payload like `alice' or '1'='1` rewraps the selector as
+// `//user[@name='alice' or '1'='1']`, matching every <user> node in
+// the staged `xpath_corpus.xml`.
+function run($name) {
+    $doc = new DOMDocument();
+    $doc->load('xpath_corpus.xml');
+    $xp = new DOMXPath($doc);
+    $expr = "//user[@name='" . $name . "']";
+    return $xp->query($expr);
+}