I have not done any of these for a while, so here we go, this is a catch all advisory to close down an number of vulnerabilities, the original advisory was released in january and this one adds a couple of new products that have been patched. if your product is down as having an available patch, then update to close down the risk
This is the third update to a original that was released in March 2014, it relates to a potential DDOS in a subcommand of NTP and a security issue in GLIB.
This patch addresses a potential guest privilege escalation caused by an issue in VMware tools installed on Microsoft Windows 8.1, so not really much of an issues as you can count the number of people using windows 8.1 on the fingers of one hand. But seriously if you are using Windows 8.1 in your environment as a VM then seriously consider this update.