CVE-2009-4022

Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before
9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta before
9.7.0b3, with DNSSEC validation enabled and checking disabled (CD), allows
remote attackers to conduct DNS cache poisoning attacks by receiving a
recursive client query and sending a response that contains an Additional
section with crafted data, which is not properly handled when the response
is processed “at the same time as requesting DNSSEC records (DO),” aka Bug
20438.

Bugs

• <https://bugzilla.redhat.com/show_bug.cgi?id=538744&gt;