USN-3956-1: Bind vulnerability

25 April 2019

Bind could be made to consume resources if it received specially crafted network traffic.



  • bind9 - Internet Domain Name Server


It was discovered that Bind incorrectly handled limiting the number of
simultaneous TCP clients. A remote attacker could possibly use this issue
to cause Bind to consume resources, leading to a denial of service.

Update instructions

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

Ubuntu 19.04
Ubuntu 18.10
Ubuntu 18.04
Ubuntu 16.04

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


Related notices

  • USN-3956-2: libisc83, libisccfg82, liblwres90, bind9-host, libisccc80, bind9, libbind9-90, bind9-doc, dnsutils, libdns81, liblwres80, host, bind9utils, libbind9-80, libisccfg90, libbind-dev, lwresd, libdns100, libisc95, libisccc90