[USN-3956-1] Bind vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Thu Apr 25 14:37:45 UTC 2019

Ubuntu Security Notice USN-3956-1
April 25, 2019

bind9 vulnerability

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


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

Software Description:
- 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:
  bind9                           1:9.11.5.P1+dfsg-1ubuntu2.3

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

Ubuntu 18.04 LTS:
  bind9                           1:9.11.3+dfsg-1ubuntu1.7

Ubuntu 16.04 LTS:
  bind9                           1:9.10.3.dfsg.P4-8ubuntu1.14

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


Package Information:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20190425/a2ff36b6/attachment.sig>

More information about the ubuntu-security-announce mailing list