Arch Linux Security Update: 201706-18 Moderate Bind DoS Vulnerability

Arch Linux Security Advisory ASA-201706-18
=========================================
Severity: Medium
Date    : 2017-06-15
CVE-ID  : CVE-2017-3140
Package : bind
Type    : denial of service
Remote  : Yes
Link    : https://security.archlinux.org/AVG-301

Summary
======
The package bind before version 9.11.1.P1-1 is vulnerable to denial of
service.

Resolution
=========
Upgrade to 9.11.1.P1-1.

# pacman -Syu "bind>=9.11.1.P1-1"

The problem has been fixed upstream in version 9.11.1.P1.

Workaround
=========
None.

Description
==========
A security issue has been found the Bind named DNS server < 9.11.1P1,
leading to a denial of service. A remote attacker can make a vulnerable
server configured to use a RPZ containing NSDNAME or NSIPpolicy rules
enter an endless loop, querying the same sets of authoritative servers
repeatedly, by sending a crafted query.

Impact
=====
A remote attacker can cause a denial of service of a vulnerable server
using NSDNAME or NSIP RPZ policies by sending a crafted query.

References
=========

https://security.archlinux.org/CVE-2017-3140