Arch Linux ASA-201701-15 High: Bind Denial Of Service Threat

Arch Linux Security Advisory ASA-201701-15
=========================================
Severity: High
Date    : 2017-01-12
CVE-ID  : CVE-2016-9131 CVE-2016-9147 CVE-2016-9444 CVE-2016-9778
Package : bind
Type    : denial of service
Remote  : Yes
Link    : https://security.archlinux.org/AVG-132

Summary
======
The package bind before version 9.11.0.P2-1 is vulnerable to denial of
service.

Resolution
=========
Upgrade to 9.11.0.P2-1.

# pacman -Syu "bind>=9.11.0.P2-1"

The problems have been fixed upstream in version 9.11.0.P2.

Workaround
=========
None

Description
==========
- CVE-2016-9131 (denial of service)

A denial of service flaw was found in the way BIND processed a response
to an ANY query. A remote attacker could use this flaw to make named
exit unexpectedly with an assertion failure via a specially crafted DNS
response.

- CVE-2016-9147 (denial of service)

A denial of service flaw was found in the way BIND handled a query
response containing inconsistent DNSSEC information. A remote attacker
could use this flaw to make named exit unexpectedly with an assertion
failure via a specially crafted DNS response.

- CVE-2016-9444 (denial of service)

A denial of service flaw was found in the way BIND handled an
unusually-formed DS record response. A remote attacker could use this
flaw to make named exit unexpectedly with an assertion failure via a
specially crafted DNS response.

- CVE-2016-9778 (denial of service)

A denial of service flaw was found in the way BIND handled certain
queries using the nxdomain-redirect feature to cover a zone for which
it is also providing authoritative service. A remote attacker could use
this flaw to make named exit unexpectedly with an assertion failure via
a specially crafted DNS response.

Impact
=====
A remote attacker can crash the server by performing crafted queries
under certain circumstances.

References
=========
https://security.archlinux.org/CVE-2016-9131
https://security.archlinux.org/CVE-2016-9147
https://security.archlinux.org/CVE-2016-9444
https://security.archlinux.org/CVE-2016-9778