Ubuntu 16.04 LTS: USN-3259-1 Critical Bind Denial Of Service Advisory

ubuntu

April 17, 2017

Several security issues were fixed in Bind.

Summary

Several security issues were fixed in Bind.

Software Description:

- bind9: Internet Domain Name Server

Details:

It was discovered that the resolver in Bind made incorrect

assumptions about ordering when processing responses containing

a CNAME or DNAME. An attacker could use this cause a denial of

service. (CVE-2017-3137)

Oleg Gorokhov discovered that in some situations, Bind did not properly

handle DNS64 queries. An attacker could use this to cause a denial

of service. (CVE-2017-3136)

Mike Lalumiere discovered that in some situations, Bind did

not properly handle invalid operations requested via its control

channel. An attacker with access to the control channel could cause

a denial of service. (CVE-2017-3138)

Topics Covered

security advisory denial of service security issue critical bind ubuntu usn

Update Instructions

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

Ubuntu 17.04:
  bind9                           1:9.10.3.dfsg.P4-10.1ubuntu5

Ubuntu 16.10:
  bind9                           1:9.10.3.dfsg.P4-10.1ubuntu1.6

Ubuntu 16.04 LTS:
  bind9                           1:9.10.3.dfsg.P4-8ubuntu1.6

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.14

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.22

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