USN-3259-1: Bind vulnerabilities

17 April 2017

Several security issues were fixed in Bind.

Releases

Packages

  • 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 versions:

Ubuntu 17.04
Ubuntu 16.10
Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

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