[manjaro-security] [arch-security] [ASA-201609-29] bind: denial of service

[Levente Polyak]

Arch Linux Security Advisory ASA-201609-29
==========================================

Severity: High
Date    : 2016-09-27
CVE-ID  : CVE-2016-2776
Package : bind
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE

Summary
=======

The package bind before version 9.10.4.P3-1 is vulnerable to denial of
service.

Resolution
==========

Upgrade to 9.10.4.P3-1.

# pacman -Syu "bind>=9.10.4.P3-1"

The problem has been fixed upstream in version 9.10.4.P3.

Workaround
==========

None.

Description
===========

Testing by ISC has uncovered a critical error condition which can occur
when a nameserver is constructing a response. A defect in the
rendering of messages into packets can cause 'named' to exit with an
assertion failure in buffer.c while constructing a response to a query
that meets certain criteria.
This assertion can be triggered even if the apparent source address
isn't allowed to make queries (i.e. doesn't match 'allow-query').

Impact
======

A remote attacker is able to perform a denial of service attack via a
specially crafted request.

References
==========

https://kb.isc.org/article/AA-01419/0
https://access.redhat.com/security/cve/CVE-2016-2776

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