add the html argument to the jQuery functions as an XSS sink

Author: erik-krogh

javascript/ql/lib/semmle/javascript/frameworks/jQuery.qll

@@ -540,9 +540,9 @@ module JQuery {
       JQuery::isMethodArgumentInterpretedAsHtml(name) and
       node = this.getAnArgument()
       or
-      // for `$, it's only the first one
+      // for `$, it's only the first one, or an "html" option
       name = "$" and
-      node = this.getArgument(0)
+      node = [this.getArgument(0), this.getOptionArgument(1, "html")]
     }
 
     /**

javascript/ql/test/query-tests/Security/CWE-079/XssThroughDom/XssThroughDom.expected

@@ -157,6 +157,8 @@ nodes
 | xss-through-dom.js:140:19:140:21 | src |
 | xss-through-dom.js:141:25:141:27 | src |
 | xss-through-dom.js:141:25:141:27 | src |
+| xss-through-dom.js:150:24:150:26 | src |
+| xss-through-dom.js:150:24:150:26 | src |
 edges
 | forms.js:8:23:8:28 | values | forms.js:9:31:9:36 | values |
 | forms.js:8:23:8:28 | values | forms.js:9:31:9:36 | values |
@@ -257,6 +259,8 @@ edges
 | xss-through-dom.js:139:11:139:52 | src | xss-through-dom.js:140:19:140:21 | src |
 | xss-through-dom.js:139:11:139:52 | src | xss-through-dom.js:141:25:141:27 | src |
 | xss-through-dom.js:139:11:139:52 | src | xss-through-dom.js:141:25:141:27 | src |
+| xss-through-dom.js:139:11:139:52 | src | xss-through-dom.js:150:24:150:26 | src |
+| xss-through-dom.js:139:11:139:52 | src | xss-through-dom.js:150:24:150:26 | src |
 | xss-through-dom.js:139:17:139:52 | documen ... k").src | xss-through-dom.js:139:11:139:52 | src |
 | xss-through-dom.js:139:17:139:52 | documen ... k").src | xss-through-dom.js:139:11:139:52 | src |
 #select
@@ -302,3 +306,4 @@ edges
 | xss-through-dom.js:132:16:132:23 | linkText | xss-through-dom.js:130:42:130:62 | dSelect ... tring() | xss-through-dom.js:132:16:132:23 | linkText | $@ is reinterpreted as HTML without escaping meta-characters. | xss-through-dom.js:130:42:130:62 | dSelect ... tring() | DOM text |
 | xss-through-dom.js:140:19:140:21 | src | xss-through-dom.js:139:17:139:52 | documen ... k").src | xss-through-dom.js:140:19:140:21 | src | $@ is reinterpreted as HTML without escaping meta-characters. | xss-through-dom.js:139:17:139:52 | documen ... k").src | DOM text |
 | xss-through-dom.js:141:25:141:27 | src | xss-through-dom.js:139:17:139:52 | documen ... k").src | xss-through-dom.js:141:25:141:27 | src | $@ is reinterpreted as HTML without escaping meta-characters. | xss-through-dom.js:139:17:139:52 | documen ... k").src | DOM text |
+| xss-through-dom.js:150:24:150:26 | src | xss-through-dom.js:139:17:139:52 | documen ... k").src | xss-through-dom.js:150:24:150:26 | src | $@ is reinterpreted as HTML without escaping meta-characters. | xss-through-dom.js:139:17:139:52 | documen ... k").src | DOM text |

javascript/ql/test/query-tests/Security/CWE-079/XssThroughDom/xss-through-dom.js

@@ -147,5 +147,5 @@ const cashDom = require("cash-dom");
     };
     cashDom("#id").html(DOMPurify ? DOMPurify.sanitize(src) : src); // OK
 
-    $("<a />", { html: src }).appendTo("#id"); // NOT OK - but not flagged [INCONSISTENCY]
+    $("<a />", { html: src }).appendTo("#id"); // NOT OK
 })();