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Ubuntu Security Notice USN-1025-1 December 01, 2010
bind9 vulnerabilities
CVE-2010-3613, CVE-2010-3614
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A security issue affects the following Ubuntu releases:

Ubuntu 6.06 LTS
Ubuntu 8.04 LTS
Ubuntu 9.10
Ubuntu 10.04 LTS
Ubuntu 10.10

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 6.06 LTS:
libdns23 1:9.3.2-2ubuntu1.12

Ubuntu 8.04 LTS:
libdns36 1:9.4.2.dfsg.P2-2ubuntu0.6

Ubuntu 9.10:
libdns53 1:9.6.1.dfsg.P1-3ubuntu0.4

Ubuntu 10.04 LTS:
libdns64 1:9.7.0.dfsg.P1-1ubuntu0.1

Ubuntu 10.10:
libdns66 1:9.7.1.dfsg.P2-2ubuntu0.1

In general, a standard system update will make all the necessary changes.

Details follow:

It was discovered that Bind would incorrectly allow a ncache entry and a
rrsig for the same type. A remote attacker could exploit this to cause
Bind to crash, resulting in a denial of service. (CVE-2010-3613)

It was discovered that Bind would incorrectly mark zone data as insecure
when the zone is undergoing a key algorithm rollover. (CVE-2010-3614)