USN-2728-1: Bind vulnerability

Ubuntu Security Notice USN-2728-1

2nd September, 2015

bind9 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 15.04
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


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

Software description

  • bind9 - Internet Domain Name Server


Hanno Böck discovered that Bind incorrectly handled certain malformed keys
when configured to perform DNSSEC validation. A remote attacker could use
this issue with specially crafted zone data to cause Bind to crash,
resulting in a denial of service.

Update instructions

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

Ubuntu 15.04:
bind9 1:9.9.5.dfsg-9ubuntu0.3
Ubuntu 14.04 LTS:
bind9 1:9.9.5.dfsg-3ubuntu0.5
Ubuntu 12.04 LTS:
bind9 1:9.8.1.dfsg.P1-4ubuntu0.13

To update your system, please follow these instructions:

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