Amazon Linux AMI Security Advisory: ALAS-2014-442
Advisory Release Date: 2014-11-05 12:19 Pacific
Advisory Updated Date: 2014-11-05 14:40 Pacific
Absolute path traversal vulnerability in GNU Wget before 1.16, when recursion is enabled, allows remote FTP servers to write to arbitrary files, and consequently execute arbitrary code, via a LIST response that references the same filename within two entries, one of which indicates that the filename is for a symlink.
Run yum update wget to update your system.