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5.3 Medium

CVE-2021-1590 A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software could allow an…

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.

Affected products and versions

Product Affected versions Fixed in
Cisco NX-OS Software Versions not published

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