|The dns_db_findrdataset function in db.c in named in ISC BIND 9.4
before 9.4.3-P3, 9.5 before 9.5.1-P3, and 9.6 before 9.6.1-P1, when
configured as a master server, allows remote attackers to cause a
denial of service (assertion failure and daemon exit) via an ANY
record in the prerequisite section of a crafted dynamic update
message, as exploited in the wild in July 2009.