Android allowBackup query

Author: egregius313

java/ql/src/Security/CWE/CWE-312/AllowBackupAttributeEnabled.ql

@@ -0,0 +1,20 @@
+/**
+ * @name Android allowBackup attribute enabled
+ * @description
+ * @kind problem
+ * @problem.severity recommendation
+ * @security-severity 7.5
+ * @id java/android/allowBackup-attribute-enabled
+ * @tags security
+ *       external/cwe/cwe-312
+ * @precision very-high
+ */
+
+import java
+import semmle.code.xml.AndroidManifest
+
+from AndroidApplicationXmlElement androidAppElem
+where
+  androidAppElem.allowsBackup() and
+  androidAppElem.getFile().(AndroidManifestXmlFile).isInBuildDirectory()
+select androidAppElem.getAttribute("allowBackup"), "The 'android:allowBackup' attribute is enabled."