USN-3973-1: DHCP vulnerability

13 May 2019

DHCP could be made to crash if it received specially crafted network traffic.



  • isc-dhcp - DHCP server and client


It was discovered that DHCP, when built with a mismatched external BIND
library, incorrectly handled certain memory operations. A remote attacker
could possibly use this issue to cause DHCP to crash, resulting in a
denial of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.