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Ubuntu Security Notice USN-3259-1

Ubuntu Security Notice USN-3259-1
Posted Apr 21, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3259-1 - 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. 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. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-3136, CVE-2017-3137, CVE-2017-3138
SHA-256 | e0a0e188df74112ab2a5202c03048a265df98295b15a73fdf2ea5b6597bc2f95

Ubuntu Security Notice USN-3259-1

Change Mirror Download

==========================================================================
Ubuntu Security Notice USN-3259-1
April 17, 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 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.

References:
http://www.ubuntu.com/usn/usn-3259-1
CVE-2017-3136, CVE-2017-3137, CVE-2017-3138

Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-10.1ubuntu5
https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-10.1ubuntu1.6
https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-8ubuntu1.6
https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-3ubuntu0.14
https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.22


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