[WRITEUP] XML EXTERNAL ENTITY (XXE) INJECTION ROOTME

AFTER TET HOLIDAYS, WE FACE TO THE CORONA(2019-nCoV) VIRUS ,SO WE MUST PROTECT OURSELVES AND LIMIT TO GO TO PUBLIC PLACE . AS A OPTIMIST, IT'S MY RELAXING TIME TO CONTINUE TO SOLVE ROOT-ME CHALLENGE 😃 . TODAY , WE HAVE XXE INJECTION . LET'S START!