CVE-2020-3168— Cisco Nexus 1000V Switch for VMware vSphere Secure Login Enhancements Denial of Service Vulnerability

Cisco Nexus 1000V Switch for VMware vSphere Secure Login Enhancements Denial of Service Vulnerability

A vulnerability in the Secure Login Enhancements capability of Cisco Nexus 1000V Switch for VMware vSphere could allow an unauthenticated, remote attacker to cause an affected Nexus 1000V Virtual Supervisor Module (VSM) to become inaccessible to users through the CLI. The vulnerability is due to improper resource allocation during failed CLI login attempts when login parameters that are part of the Secure Login Enhancements capability are configured on an affected device. An attacker could exploit this vulnerability by performing a high amount of login attempts against the affected device. A successful exploit could cause the affected device to become inaccessible to other users, resulting in a denial of service (DoS) condition requiring a manual power cycle of the VSM to recover.

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资源管理错误

Cisco Nexus 1000V Switch for VMware vSphere 资源管理错误漏洞

Cisco Nexus 1000V Series Switches是美国思科（Cisco）公司的一款1000V系列的交换机设备。 Cisco Nexus 1000V Switch for VMware vSphere（运行NX-OS Software Release 5.2(1)SV3(4.1a)并配置有登录参数）中的Secure Login Enhancements功能存在资源管理错误漏洞，该漏洞源于在CLI登录失败过程中，程序没有正确分配资源。远程攻击者可借助大量的登录请求利用该漏洞造成拒绝服务。

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