CVE:CVE-2017-12331
CNNVD:CNNVD-201711-1233
Cisco Multilayer Director Switches等都是美国思科（Cisco）公司的产品。Cisco Multilayer Director Switches是一款交换机产品。Unified Computing System Manager是一套内嵌设备管理软件。Cisco NX-OS System Software是一套运行在交换机中的软件。
多款Cisco产品中的Cisco NX-OS System Software存在安全漏洞，该漏洞源于程序没有充分的对软件补丁执行NX-OS签名验证。本地攻击者可利用该漏洞绕过签名验证，下载特制的未签名软件补丁。以下产品受到影响：Cisco Multilayer Director Switches；Nexus 7000 Series Switches；Nexus 7700 Series Switches；Unified Computing System Manager。
solution:Upgrade cisco nx-os to a higher version than 8.1(1,and avoid the version 8.1(1); Upgrade cisco unified_computing_system to a higher version than 7.0(0hsk(0.357,and avoid the version 7.0(0)hsk(0.357)