USN-3259-1: Bind vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.10
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

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

• 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

• bind9 - 1:9.10.3.dfsg.P4-8ubuntu1.6

Ubuntu 14.04

• bind9 - 1:9.9.5.dfsg-3ubuntu0.14

Ubuntu 12.04

• bind9 - 1:9.8.1.dfsg.P1-4ubuntu0.22

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

References

• CVE-2017-3136
• CVE-2017-3137
• CVE-2017-3138