CVE:CVE-2017-12301
CNNVD:CNNVD-201710-875
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。Nexus 2000 Series Fabric Extenders是一款Nexus 2000系列阵列扩展器。NX-OS Software是使用在其中的一套操作系统。Python scripting subsystem是其中的一套Python脚本子系统。
多款Cisco产品中的NX-OS Software的Python scripting子系统存在安全漏洞，该漏洞源于程序没有充分的过滤用户提交的参数。本地攻击者可利用该漏洞绕过Python解析器，并获取未授权的底层操作系统的访问权限。以下产品受到影响：Cisco Multilayer Director Switches；Nexus 2000 Series Fabric Extenders；Nexus 3000 Series Switches；Nexus 3500 Platform Switches；Nexus 5000 Series Switches；Nexus 5500 Platform Switches；Nexus 5600 Platform Switches；Nexus 6000 Series Switches；Nexus 7000 Series Switches；Nexus 7700 Series Switches；Nexus 9000 Series Switches - Standalone；NX-OS mode；Nexus 9500 R-Series Line Cards；Fabric Modules。
solution:Upgrade cisco nx-os to a higher version than 7.0(3i4(6,8.1(0bd(0.20,7.3(2d1(0.21,8.0(0.74,8.0(1,8.1(0.70s0,6.0(2a8(3,6.0(2a8(6.213,7.0(0hsk(0.357,and avoid the version 7.0(3)i4(6),8.1(0)bd(0.20),7.3(2)d1(0.21),8.0(0.74),8.0(1),8.1(0.70)s0,6.0(2)a8(3),6.0(2)a8(6.213),7.0(0)hsk(0.357)