Index: security/webintegration/src/main/java/com/sun/web/security/RealmAdapter.java
===================================================================
--- security/webintegration/src/main/java/com/sun/web/security/RealmAdapter.java	(revision 51847)
+++ security/webintegration/src/main/java/com/sun/web/security/RealmAdapter.java	(working copy)
@@ -962,7 +962,7 @@
             if (headerName.equalsIgnoreCase("Host")) {
                 hostVal = ((HttpServletRequest) request.getRequest()).getHeader(headerName);
                 isHeaderPresent = true;
-                hostPort = hostVal.split(":");
+                hostPort = Arrays.copyOf(hostVal.split(":"), 2);
             }
         }