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.

A denial of service (DoS) vulnerability exists in Cisco Nexus 1000V Switch due to issues with the Secure Login Enhancements. An unauthenticated, remote attacker can exploit this issue, via overloading the login system, to cause the system to stop responding.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Detections

Analytics

CVE-2020-3168

high

Tenable Plugins

high