Apple has issued a statement in response to the XcodeGhost, saying that it has removed all infected apps it is aware of from the App Store and is working with developers to ensure they are using a legitimate version of Xcode.
“We’ve removed the apps from the App Store that we know have been created with this counterfeit software,” Apple said in a statement. “We are working with the developers to make sure they’re using the proper version of Xcode to rebuild their apps.”
Apple has posted instructions for making sure your version of Xcode is validated. You can find them at http://tinyurl.com/qelbgtk.