==========================================================================
Ubuntu Security Notice USN-4197-1
November 21, 2019
bind9 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 19.10
– Ubuntu 19.04
– Ubuntu 18.04 LTS
Summary:
Bind could be made to consume resources if it received specially crafted
network traffic.
Software Description:
– bind9: Internet Domain Name Server
Details:
It was discovered that Bind incorrectly handled certain TCP-pipelined
queries. A remote attacker could possibly use this issue to cause Bind to
consume resources, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.10:
bind9 1:9.11.5.P4+dfsg-5.1ubuntu2.1
Ubuntu 19.04:
bind9 1:9.11.5.P1+dfsg-1ubuntu2.6
Ubuntu 18.04 LTS:
bind9 1:9.11.3+dfsg-1ubuntu1.11
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4197-1
CVE-2019-6477
Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P4+dfsg-5.1ubuntu2.1
https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P1+dfsg-1ubuntu2.6
https://launchpad.net/ubuntu/+source/bind9/1:9.11.3+dfsg-1ubuntu1.11
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