Fix #2032

Author: cowtowncoder

release-notes/VERSION

@@ -4,6 +4,10 @@ Project: jackson-databind
 === Releases ===
 ------------------------------------------------------------------------
 
+2.7.9.4 (not yet released)
+
+#2032: Blacklist another serialization gadget (ibatis)
+
 2.7.9.3 (11-Feb-2018)
 
 #1872 `NullPointerException` in `SubTypeValidator.validateSubType` when

src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java

@@ -54,6 +54,8 @@ public class SubTypeValidator
         // [databind#1855]: more 3rd party
         s.add("org.apache.tomcat.dbcp.dbcp2.BasicDataSource");
         s.add("com.sun.org.apache.bcel.internal.util.ClassLoader");
+        // [databind#2032]: more 3rd party; data exfiltration via xml parsed ext entities
+        s.add("org.apache.ibatis.parsing.XPathParser");
 
         DEFAULT_NO_DESER_CLASS_NAMES = Collections.unmodifiableSet(s);
     }