Amazon Linux AMI Security Advisory: ALAS-2017-826
Advisory Release Date: 2017-04-27 19:54 Pacific
A denial of service flaw was found in the way BIND handled a query response containing CNAME or DNAME resource records in an unusual order. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. (CVE-2017-3137 )
A denial of service flaw was found in the way BIND handled query requests when using DNS64 with "break-dnssec yes" option. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS request. (CVE-2017-3136 )
Upstream acknowledges Oleg Gorokhov (Yandex) as the original reporter of CVE-2017-3136 .
Run yum update bind to update your system.