Debian LTS Advisory ([SECURITY] [DLA 957-1] bind9 security update)

CVE-2017-3136 Oleg Gorokhov of Yandex discovered that BIND does not properly handle certain queries when using DNS64 with the 'break-dnssec yes<semicolon>' option, allowing a remote attacker to cause a denial-of-service. CVE-2017-3137 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. CVE-2017-3138 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.

bind9 on Debian Linux

This check tests the installed software version using the apt package manager.

For Debian 7 'Wheezy', these problems have been fixed in version 1:9.8.4.dfsg.P1-6+nmu2+deb7u16. We recommend that you upgrade your bind9 packages.