ssmtp insecure file creation

Hi, ssmtp 2.50.6 create a logfile /tmp/ssmtp.log. The data in this logfile is user specified. It's possible to overwrite any file with the permissons of the ssmtp program normally root. The vulnerable call is in logevent. logevent vulnerable call: ifdef LOGFILE iffp = fopen"/tmp/ssmtp.log", "a" !...