F5-K000140574: Critical severity f5 f5os vulnerability

Published May 7, 2025
·
Updated

On an F5OS system, if the root user configures the system to allow login using SSH key-based authentication and later enables appliance mode, the system still allows access using SSH key-based authentication. For an attacker to exploit this vulnerability they must obtain possession of a private key corresponding to a previously-configured entry in root's SSH authorizedkeys file.

Affected Software

2 affected componentsFixes available
F5 F5OS-A>=1.5.1<=1.5.2
1.8.01.5.3
F5 F5OS-C>=1.6.0<=1.6.2
5

Event History

May 7, 2025
Advisory Published
via F5·01:12 PM
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Frequently Asked Questions

1

What is the severity of F5-K000140574?

The severity of F5-K000140574 is classified as high due to the potential risk of unauthorized SSH access.

2

How do I fix F5-K000140574?

To fix F5-K000140574, disable SSH key-based authentication before enabling appliance mode on your F5OS system.

3

What products are affected by F5-K000140574?

F5-K000140574 affects F5OS-A versions 1.5.1 to 1.5.2 and F5OS-C versions 1.6.0 to 1.6.2.

4

What is the potential impact of F5-K000140574?

The potential impact of F5-K000140574 includes unauthorized access to the system if an attacker gains possession of the private SSH key.

5

Is there a workaround for F5-K000140574?

A recommended workaround for F5-K000140574 is to refrain from using SSH key-based authentication when appliance mode is enabled.

Contact

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