CVE:CVE-2015-6429
CNNVD:CNNVD-201512-539
Cisco IOS和IOS XE Software都是美国思科（Cisco）公司为其网络设备开发的操作系统。
Cisco IOS 15.4版本至15.6版本和IOS XE Software 3.15版本至3.17版本的IKEv1状态机中存在安全漏洞。远程攻击者可通过向隧道端点发送特制的IKEv1数据包利用该漏洞造成拒绝服务（Ipsec连接终止）。
solution:Upgrade cisco ios to a higher version than 15.4(3s,15.5(1s,15.5(1t,15.5(2s,15.5(2t,15.5(3m,15.5(3m1,15.5(3s,15.5(3s1,15.6(0.17t,15.6(1t0a,and avoid the version 15.4(3)s,15.5(1)s,15.5(1)t,15.5(2)s,15.5(2)t,15.5(3)m,15.5(3)m1,15.5(3)s,15.5(3)s1,15.6(0.17)t,15.6(1)t0a; Upgrade cisco ios_xe to a higher version than 3.15s.0,3.15s.1,3.15s.2,3.16s.0,3.16s.1,3.17s.0,3.17s.1,and avoid the version 3.15s.0,3.15s.1,3.15s.2,3.16s.0,3.16s.1,3.17s.0,3.17s.1