Several remote vulnerabilities have been discovered in BIND, an implementation of the DNS protocol suite. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2010-3762 When DNSSEC validation is enabled, BIND does not properly handle certain bad signatures if multiple trust anchors exist for a single zone, which allows remote attackers to cause a denial of service via a DNS query. CVE-2010-3614 BIND does not properly determine the security status of an NS RRset during a DNSKEY algorithm rollover, which may lead to zone unavailability during rollovers. CVE-2010-3613 BIND does not properly handle the combination of signed negative responses and corresponding RRSIG records in the cache, which allows remote attackers to cause a denial of service via a query for cached data. In addition, this security update improves compatibility with previously installed versions of the bind9 package. As a result, it is necessary to initiate the update with "apt-get dist-upgrade" instead of "apt-get update". For the stable distribution , these problems have been fixed in version 1:9.6.ESV.R3+dfsg-0+lenny1. For the upcoming stable distribution and the unstable distribution , these problems have been fixed in version 1:9.7.2.dfsg.P3-1. We recommend that you upgrade your bind9 packages.