This update for dhcp fixes the following issues:
- CVE-2015-8605: A remote attacker could have used badly formed packets with an invalid IPv4 UDP length field to cause a DHCP server, client, or relay program to terminate abnormally (bsc#961305)
The following bugs were fixed:
- bsc#936923: Improper lease duration checking
- bsc#880984: Integer overflows in the date and time handling code
- bsc#947780: DHCP server could abort with 'Unable to set up timer: out of range' on very long or infinite timer intervals / lease lifetimes
- bsc#926159: DHCP preferrend and valid lifetime would be logged incorrectly
- bsc#928390: dhclient dit not expose next-server DHCPv4 option to script
- bsc#926159: DHCP preferrend and valid lifetime would be logged incorrectly