Ubuntu alert USN-4026-1 (bind9)

From:
             
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
             
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
             
 
[USN-4026-1] Bind vulnerability 
Date:
             
 
Thu, 20 Jun 2019 09:16:30 -0400
Message-ID:
             
 
<611098a6-f001-cb51-8ddd-a2bf15e0df90@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4026-1
June 20, 2019

bind9 vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS

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 certain malformed packets.
A remote attacker could possibly use this issue 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 versions:

Ubuntu 19.04:
  bind9                           1:9.11.5.P1+dfsg-1ubuntu2.5

Ubuntu 18.10:
  bind9                           1:9.11.4+dfsg-3ubuntu5.4

Ubuntu 18.04 LTS:
  bind9                           1:9.11.3+dfsg-1ubuntu1.8

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

References:
  https://usn.ubuntu.com/4026-1
  CVE-2019-6471

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P1+df...
  https://launchpad.net/ubuntu/+source/bind9/1:9.11.4+dfsg-...
  https://launchpad.net/ubuntu/+source/bind9/1:9.11.3+dfsg-...

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