ISC BIND 9.7.1 through 9.7.2-P3, when configured as an authoritative server, allows remote attackers to cause a denial of service (deadlock and daemon hang) by sending a query at the time of (1) an IXFR transfer or (2) a DDNS update.
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
https://bugzilla.redhat.com/show_bug.cgi?id=679496
http://secunia.com/advisories/43439
http://secunia.com/advisories/43443
http://www.debian.org/security/2011/dsa-2208
http://www.isc.org/software/bind/advisories/cve-2011-0414
http://www.kb.cert.org/vuls/id/449980
http://www.kb.cert.org/vuls/id/559980
http://www.securitytracker.com/id?1025110
http://www.ubuntu.com/usn/USN-1070-1
Published: 2011-02-23
Base Score: 7.1
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C
Severity: High