CVE-2017-3136 Amazon Linux Security Advisory for bind: ALAS-2017-826

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 .

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

Please refer to Amazon advisory ALAS-2017-826 for affected packages and patching details, or update with your package manager.

Patch:
Following are links for downloading patches to fix the vulnerabilities:

ALAS-2017-826: Amazon Linux (bind (9.8.2-0.62.rc1.54.amzn1) on i686)

ALAS-2017-826: Amazon Linux (bind (9.8.2-0.62.rc1.54.amzn1) on x86_64)

ALAS-2017-826: Amazon Linux (bind (9.8.2-0.62.rc1.54.amzn1) on src)