CVE:CVE-2011-4869
CNNVD:CNNVD-201112-377
Unbound是荷兰NLnet实验室负责维护的一套基于C语言的开源递归式DNS服务器软件。
Unbound 1.4.13p2之前版本中存在漏洞，该漏洞源于validator/val_nsec3.c对NSEC3-signed区域未正确执行校验处理。远程DNS服务器可借助缺少预期的NSEC3记录的特制响应导致拒绝服务（守护进程崩溃）。
solution:Upgrade unbound unbound to a higher version than 1.4.12,0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.7.1,0.7.2,0.8,0.09,0.10,0.11,1.0.0,1.0.1,1.0.2,1.1.0,1.1.1,1.2.0,1.2.1,1.3.0,1.3.1,1.3.2,1.3.3,1.3.4,1.4.0,1.4.1,1.4.2,1.4.3,1.4.4,1.4.5,1.4.6,1.4.7,1.4.8,1.4.9,1.4.10,1.4.11,and avoid the version (,1.4.12],0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.7.1,0.7.2,0.8,0.09,0.10,0.11,1.0.0,1.0.1,1.0.2,1.1.0,1.1.1,1.2.0,1.2.1,1.3.0,1.3.1,1.3.2,1.3.3,1.3.4,1.4.0,1.4.1,1.4.2,1.4.3,1.4.4,1.4.5,1.4.6,1.4.7,1.4.8,1.4.9,1.4.10,1.4.11