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.

The Berkeley Internet Name Domain (BIND) implements an Internet domain name server. BIND is the most widely-used name server software on the Internet, and is supported by the Internet Software Consortium, www.isc.org. This package provides the server and related configuration files.

bind9 on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2014/dsa-3094.html

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Updated on 2015-03-25