CVE:CVE-2011-4007
CNNVD:CNNVD-201205-041
Cisco IOS是美国思科（Cisco）公司为其网络设备开发的操作系统。
Cisco IOS 15.0与15.1版本与IOS XE 3.x版本中存在漏洞，该漏洞源于未正确处理‘set mpls experimental imposition’命令。远程攻击者可利用该漏洞借助触发(1)破碎的或者(2)重组的的网络流量导致拒绝服务（设备崩溃），也称Bug ID CSCtr56576。
solution:Upgrade cisco ios to a higher version than 15.0,15.1,and avoid the version 15.0,15.1; Upgrade cisco ios_xe to a higher version than 3.1.0s,3.1.0sg,3.1.1s,3.1.1sg,3.1.2s,3.1.3s,3.1.4s,3.2.0s,3.2.0sg,3.2.1s,3.2.1sg,3.2.2s,3.3.0s,3.3.1s,3.3.2s,3.3.3s,3.4.0s,3.4.1s,3.5.0s,and avoid the version 3.1.0s,3.1.0sg,3.1.1s,3.1.1sg,3.1.2s,3.1.3s,3.1.4s,3.2.0s,3.2.0sg,3.2.1s,3.2.1sg,3.2.2s,3.3.0s,3.3.1s,3.3.2s,3.3.3s,3.4.0s,3.4.1s,3.5.0s