Ubuntu 18.04: 3769-1 Moderate Bind9 Denial Of Service Threat

ubuntu

September 20, 2018

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

Summary

Bind could be made to crash if it received specially crafted network

traffic.

Software Description:

- bind9: Internet Domain Name Server

Details:

It was discovered that Bind incorrectly handled the deny-answer-aliases

feature. If this feature is enabled, a remote attacker could use this issue

to cause Bind to crash, resulting in a denial of service.

Topics Covered

security advisory denial of service Ubuntu moderate severity network issue Bind9

Update Instructions

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

Ubuntu 18.04 LTS:
  bind9                           1:9.11.3+dfsg-1ubuntu1.2

Ubuntu 16.04 LTS:
  bind9                           1:9.10.3.dfsg.P4-8ubuntu1.11

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.18

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