Amazon Linux AMI Security Advisory: ALAS-2020-1414
Advisory Release Date: 2020-08-10 22:53 Pacific
Advisory Updated Date: 2020-08-12 17:49 Pacific
keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd. (CVE-2018-19044 )
Run yum update keepalived to update your system.