CVE:CVE-2009-3602
CNNVD:CNNVD-200910-201
Unbound 1.3.4版本之前的版本没有验证NSEC3记录的签名，这会允许远程攻击者可以借助DNS欺骗或其他DNS相关的攻击以及特制的委派响应，造成安全委派程度降级。
solution:Upgrade nlnetlabs unbound to a higher version than 1.3.3,0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.7.1,0.7.2,0.8,0.09,0.10,0.11,1.0.0,1.0.1,1.0.2,1.1.0,1.1.1,1.2.0,1.2.1,1.3.0,1.3.1,1.3.2,and avoid the version (,1.3.3],0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.7.1,0.7.2,0.8,0.09,0.10,0.11,1.0.0,1.0.1,1.0.2,1.1.0,1.1.1,1.2.0,1.2.1,1.3.0,1.3.1,1.3.2