CVE:CVE-2011-4023
CNNVD:CNNVD-201205-068
Cisco NX-OS是美国思科（Cisco）公司的一套面向数据中心的操作系统。
基于Nexus交换机的Cisco NX-OS 5.0版本中的libcmd中存在内存泄露漏洞。远程认证用户可利用该漏洞借助SNMP请求导致拒绝服务（内存消耗），也称Bug ID CSCtr65682。
solution:Upgrade cisco nx-os to a higher version than 5.0,5.0(2,5.0(2n1(1,5.0(2n2(1,5.0(2n2(1a,5.0(2a,5.0(3,5.0(3n1(1,5.0(3n1(1a,5.0(3n1(1b,5.0(3n1(1c,5.0(3n2(1,5.0(3n2(2,5.0(3n2(2a,5.0(3n2(2b,5.0(5,and avoid the version 5.0,5.0(2),5.0(2)n1(1),5.0(2)n2(1),5.0(2)n2(1a),5.0(2a),5.0(3),5.0(3)n1(1),5.0(3)n1(1a),5.0(3)n1(1b),5.0(3)n1(1c),5.0(3)n2(1),5.0(3)n2(2),5.0(3)n2(2a),5.0(3)n2(2b),5.0(5); Upgrade cisco nexus_2148t_fex_switch to a higher version than -; Upgrade cisco nexus_2224tp_fex_switch to a higher version than -; Upgrade cisco nexus_2232pp_fex_switch to a higher version than -; Upgrade cisco nexus_2232tm_fex_switch to a higher version than -; Upgrade cisco nexus_2248tp_e_fex_switch to a higher version than -; Upgrade cisco nexus_2248tp_fex_switch to a higher version than -; Upgrade cisco nexus_5010p_switch to a higher version than -; Upgrade cisco nexus_5020p_switch to a higher version than -; Upgrade cisco nexus_5548p to a higher version than -; Upgrade cisco nexus_5548up to a higher version than -; Upgrade cisco nexus_5596up to a higher version than -