USN-3259-1: Bind vulnerabilities

Ubuntu Security Notice USN-3259-1

17th April, 2017

bind9 vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

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)

Update instructions

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

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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-3136, CVE-2017-3137, CVE-2017-3138