It was discovered that BIND, a DNS server, is prone to a denial of service vulnerability. By making use of maliciously-constructed zones or a rogue server, an attacker can exploit an oversight in the code BIND 9 uses to follow

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Debian Security Advisory DSA-3094-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                         Giuseppe Iuculano
December 08, 2014                      http://www.debian.org/security/faq
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Package        : bind9
CVE ID         : CVE-2014-8500

It was discovered that BIND, a DNS server, is prone to a denial of 
service vulnerability.
By making use of maliciously-constructed zones or a rogue server, an 
attacker can exploit an oversight in the code BIND 9 uses to follow 
delegations in the Domain Name Service, causing BIND to issue unlimited 
queries in an attempt to follow the delegation.  
This can lead to resource exhaustion and denial of service 
(up to and including termination of the named server process.)

For the stable distribution (wheezy), this problem has been fixed in
version 1:9.8.4.dfsg.P1-6+nmu2+deb7u3.

For the upcoming stable distribution (jessie), this problem will be
fixed soon.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your bind9 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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