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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nx-os | Cisco | 7.0(3)i4(0.116) (including) | 7.0(3)i4(0.116) (including) |
| Nx-os | Cisco | 7.3(7)n1(1b) (including) | 7.3(7)n1(1b) (including) |