CVE-2023-20012
Description
A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability is due to the improper implementation of the password validation function. An attacker could exploit this vulnerability by logging in to the console port on an affected device. A successful exploit could allow the attacker to bypass authentication and execute a limited set of commands local to the FEX, which could cause a device reboot and denial of service (DoS) condition.
How to fix
- cisco ucs_central_software4.2\(2d\) or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco nexus_93180yc-fx3s_firmware | No range specified | — |
| cisco nexus_93180yc-fx3_firmware | No range specified | — |
| cisco ucs_central_software | 4.2 ≤ v < 4.2\(2d\) | 4.2\(2d\) |
| cisco ucs_6536_firmware | No range specified | — |
| cisco ucs_64108_firmware | No range specified | — |
| cisco ucs_6454_firmware | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.