Ubuntu 15.10: USN-2837-1 Critical: Bind DoS Attack Issue

ubuntu

December 15, 2015

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 responses with malformed

class attributes. A remote attacker could use this issue to cause Bind to

crash, resulting in a denial of service.

Topics Covered

security advisory DoS remote attack Ubuntu bind9

Update Instructions

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

Ubuntu 15.10:
  bind9                           1:9.9.5.dfsg-11ubuntu1.1

Ubuntu 15.04:
  bind9                           1:9.9.5.dfsg-9ubuntu0.4

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.6

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.14

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