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The network element must not use SSH Version 1 for administrative access.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-14717 | NET1647 | SV-15460r2_rule | Medium |
| Description |
|---|
| SSH Version 1 is a protocol that has never been defined in a standard. Since SSH-1 has inherent design flaws which make it vulnerable to, e.g., man-in-the-middle attacks, it is now generally considered obsolete and should be avoided by explicitly disabling fallback to SSH-1. |
| STIG | Date |
|---|---|
| Perimeter L3 Switch Security Technical Implementation Guide - Cisco | 2017-12-07 |
Details
| Check Text ( C-12925r2_chk ) |
|---|
| If SSH is used for administrative access, then Version 2 must be configured as shown in the following example: ip ssh version 2 |
| Fix Text (F-14184r5_fix) |
|---|
| Configure the network device to use SSH version 2. |