Hash: SHA512

Package        : bind9
Version        : 1:9.8.4.dfsg.P1-6+nmu2+deb7u16
CVE ID         : CVE-2017-3136 CVE-2017-3137 CVE-2017-3138


     Oleg Gorokhov of Yandex discovered that BIND does not properly
     handle certain queries when using DNS64 with the "break-dnssec yes;"
     option, allowing a remote attacker to cause a denial-of-service.


     It was discovered that BIND makes incorrect assumptions about the
     ordering of records in the answer section of a response containing
     CNAME or DNAME resource records, leading to situations where BIND
     exits with an assertion failure. An attacker can take advantage of
     this condition to cause a denial-of-service.


     Mike Lalumiere of Dyn, Inc. discovered that BIND can exit with a
     REQUIRE assertion failure if it receives a null command string on
     its control channel. Note that the fix applied in Debian is only
     applied as a hardening measure. Details about the issue can be found
     at https://kb.isc.org/article/AA-01471 .

For Debian 7 "Wheezy", these problems have been fixed in version

We recommend that you upgrade your bind9 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS