VULNERABILITY

Cisco UCS Manager: CVE-2021-1590: Cisco NX-OS Software system login block-for Denial of Service Vulnerability

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Cisco UCS Manager: CVE-2021-1590: Cisco NX-OS Software system login block-for Denial of Service Vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
08/25/2021
Created
09/06/2024
Added
09/03/2024
Modified
01/22/2025

Description

A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a login process to unexpectedly restart, causing a denial of service (DoS) condition. This vulnerability is due to a logic error in the implementation of the system login block-for command when an attack is detected and acted upon. An attacker could exploit this vulnerability by performing a brute-force login attack on an affected device. A successful exploit could allow the attacker to cause a login process to reload, which could result in a delay during authentication to the affected device.

Solution(s)

  • cisco-ucs-manager-upgrade-latest

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