bind9 - security update

Tony Finch and Marco Davids reported an assertion failure in BIND, a
DNS server implementation, which causes the server process to
terminate. This denial-of-service vulnerability is related to a
defect in the processing of responses with DNAME records from
authoritative servers and primarily affects recursive resolvers.

For Debian 7 Wheezy, these problems have been fixed in version
1:9.8.4.dfsg.P1-6+nmu2+deb7u13.

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&gt;