CVE:CVE-2014-3321
CNNVD:CNNVD-201407-471
Cisco IOS XR on ASR 9000是美国思科（Cisco）公司的一套运行于9000系列路由器设备中的操作系统。
ASR 9000设备上的Cisco IOS XR 4.3.4及之前的版本存在安全漏洞。当程序使用bridge-group virtual interface (BVI)路由时，远程攻击者可通过发送特制的MPLS数据包利用该漏洞造成拒绝服务（芯片和卡挂起）。
solution:Upgrade cisco ios_xr to a higher version than 4.3.4,4.3.0,4.3.1,4.3.2,and avoid the version (,4.3.4],4.3.0,4.3.1,4.3.2; Upgrade cisco asr_9000_rsp440_router to a higher version than -; Upgrade cisco asr_9001 to a higher version than -; Upgrade cisco asr_9006 to a higher version than -; Upgrade cisco asr_9010 to a higher version than -; Upgrade cisco asr_9904 to a higher version than -; Upgrade cisco asr_9912 to a higher version than -; Upgrade cisco asr_9922 to a higher version than -