Description
A vulnerability in the key-based SSH authentication feature of Cisco StarOS Software could allow an authenticated, remote attacker to elevate privileges on an affected device.
This vulnerability is due to insufficient validation of user-supplied credentials. An attacker could exploit this vulnerability by sending a valid low-privileged SSH key to an affected device from a host that has an IP address that is configured as the source for a high-privileged user account. A successful exploit could allow the attacker to log in to the affected device through SSH as a high-privileged user.
There are workarounds that address this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | Cisco ASR 5000 Series Software | 21.11.0, 21.11.1, 21.11.2, 21.11.3, 21.11.10, 21.11.11, 21.11.12, 21.11.13, 21.11.14, 21.11.4, 21.11.5, 21.11.6, 21.11.7, 21.11.8, 21.11.9, 21.11.15, 21.11.16, 21.11.17, 21.11.18, 21.11.19, 21.11.20, 21.11.21, 21.12.0, 21.12.1, 21.12.2, 21.12.3, 21.12.4, 21.12.5, 21.12.6, 21.12.10, 21.12.11, 21.12.… | — |
| Cisco | Cisco Ultra Cloud Core - User Plane Function | N/A | — |