-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1083
         K92140924: F5 management sshd vulnerability CVE-2017-6128
                                2 May 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           F5 Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6128  

Original Bulletin: 
   https://support.f5.com/csp/article/K92140924

- --------------------------BEGIN INCLUDED TEXT--------------------

K92140924: SSHD vulnerability CVE-2017-6128
Security Advisory

Original Publication Date: Apr 21, 2017
Updated Date: Apr 24, 2017
Applies to (see versions):

Security Advisory Description

An undisclosed traffic pattern received on an F5 management interface may
cause the Secure Shell Daemon (sshd) to stop responding, resulting in a 
Denial-of-Service (DoS). (CVE-2017-6128)

Impact

An attacker may be able to cause a denial-of-service (DoS) attack.

Security Advisory Status

F5 Product Development has assigned ID 475743 (BIG-IP), ID 650003 (BIG-IQ),
and ID 650000 (EM) to this vulnerability. Additionally, BIG-IP iHealth
may list Heuristic H92140924 on the Diagnostics > Identified > Medium screen.

To determine if your release is known to be vulnerable, the components
or features that are affected by the vulnerability, and for information
about releases or hotfixes that address the vulnerability, refer to the
following table:

Product                         Versions known to be vulnerable    Versions known to be not vulnerable    Severity        Vulnerable component or feature
BIG-IP LTM                      11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
				11.2.1                             11.5.4 HF3

BIG-IP AAM                      11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
                                11.5.4 HF3

BIG-IP AFM                      11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
                                11.5.4 HF3

BIG-IP Analytics                11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
				11.2.1                             11.5.4 HF3

BIG-IP APM                      11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
				11.2.1                             11.5.4 HF3

BIG-IP ASM                      11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
				11.2.1                             11.5.4 HF3

BIG-IP DNS                      None                               13.0.0                                 Not vulnerable  None
                                                                   12.0.0 - 12.1.2

BIG-IP Edge Gateway             11.2.1                             None                                   Medium          sshd

BIG-IP GTM                      11.6.0 - 11.6.1                    11.6.1 HF2                             Medium          sshd
                                11.5.0 - 11.5.4                    11.5.4 HF3
				11.4.0 - 11.4.1
				11.2.1

BIG-IP Link Controller          11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
				11.2.1                             11.5.4 HF3

BIG-IP PEM                      11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                11.5.0 - 11.5.4                    12.0.0 - 12.1.2
                                11.4.0 - 11.4.1                    11.6.1 HF2
                                11.5.4 HF3

BIG-IP PSM                      11.4.0 - 11.4.1                    None                                   Medium          sshd

BIG-IP WebAccelerator           11.2.1                             None                                   Medium          sshd

BIG-IP WebSafe                  11.6.0 - 11.6.1                    13.0.0                                 Medium          sshd
                                                                   12.0.0 - 12.1.2
								   11.6.1 HF2

ARX                             None                               6.2.0 - 6.4.0                          Not vulnerable  None

Enterprise Manager              3.1.1                              None                                   Medium          sshd

BIG-IQ Cloud                    4.4.0 - 4.5.0                      None                                   Medium          sshd

BIG-IQ Device                   4.4.0 - 4.5.0                      None                                   Medium          sshd

BIG-IQ Security                 4.4.0 - 4.5.0                      None                                   Medium          sshd

BIG-IQ ADC                      4.5.0                              None                                   Medium          sshd

BIG-IQ Centralized Management   4.6.0                              5.0.0 - 5.1.0                          Medium          sshd

BIG-IQ Cloud and Orchestration  1.0.0                              None                                   Medium          sshd

F5 iWorkflow                    2.0.0                              2.1.0                                  Medium          sshd

LineRate                        None                               2.5.0 - 2.6.2                          Not vulnerable  None

Traffix SDC                     None                               5.0.0 - 5.1.0                          Not vulnerable  None
                                                                   4.0.0 - 4.4.0


Security Advisory Recommended Actions

If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only
an older version than what you are currently running, or does not list a
non-vulnerable version, then no upgrade candidate currently exists.

To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow
systems.

Mitigation

F5 recommends that you restrict network access to the SSH service to only
the BIG-IP management port.

Supplemental Information

    K9970: Subscribing to email notifications regarding F5 products
    K9957: Creating a custom RSS feed to view new and updated documents
    K4602: Overview of the F5 security vulnerability response policy
    K4918: Overview of the F5 critical issue hotfix policy
    K167: Downloading software and firmware from F5
    K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
    K9502: BIG-IP hotfix matrix
    K15106: Managing BIG-IQ product hotfixes
    K15113: BIG-IQ hotfix matrix

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=mA+L
-----END PGP SIGNATURE-----