ESB-2017.0026.3 - UPDATE [Appliance] F5 BIG IP products: Access confidential data - Remote/unauthenticated 2018-04-18

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2017.0026.3
              K14845276: OpenSSH vulnerability CVE-2016-6210
                               18 April 2018

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

Product:           F5 BIG IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-6210  

Reference:         ESB-2016.2946
                   ESB-2016.1804

Original Bulletin: 
   https://support.f5.com/csp/#/article/K14845276

Revision History:  April    18 2018: Updated affected versions.
                   December 22 2017: Vendor updated source text
                   January   4 2017: Initial Release

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

K14845276: OpenSSH vulnerability CVE-2016-6210

Security Advisory

Original Publication Date: Dec 23, 2016
Updated Date: Apr 18, 2018

Security Advisory Description

When SSHD tries to authenticate a non-existing user, it will pick up a fake
password structure hard-coded in the SSHD source code. An attacker can measure
timing information to determine if a user exists when verifying a password. (
CVE-2016-6210)

Impact

This vulnerability allows an attacker to disrupt service.

Security Advisory Status

F5 Product Development has assigned ID 605497 (BIG-IP), ID 606040 (BIG-IQ and
F5 iWorkflow), and ID 431179 (ARX) to this vulnerability. Additionally, BIG-IP
iHealth may list Heuristic H14845276 on the Diagnostics > Identified > Medium
page.

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.

+------------------------------------------------------------------------------+
|               |Versions known  |Versions known to|          |Vulnerable      |
|Product        |to be vulnerable|be not vulnerable|Severity  |component or    |
|               |                |                 |          |feature         |
|---------------+----------------+-----------------+----------+----------------|
|               |                |13.0.0 - 13.1.0  |          |                |
|BIG-IP LTM     |11.4.0 - 11.6.3 |12.0.0 - 12.1.3  |Medium    |OpenSSH         |
|               |                |11.2.1           |          |                |
|               |                |10.2.1 - 10.2.4  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP AAM     |11.4.0 - 11.6.3 |13.0.0 - 13.1.0  |Medium    |OpenSSH         |
|               |                |12.0.0 - 12.1.3  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP AFM     |11.4.0 - 11.6.3 |13.0.0 - 13.1.0  |Medium    |OpenSSH         |
|               |                |12.0.0 - 12.1.3  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP         |                |13.0.0 - 13.1.0  |          |                |
|Analytics      |11.4.0 - 11.6.3 |12.0.0 - 12.1.3  |Medium    |OpenSSH         |
|               |                |11.2.1           |          |                |
|---------------+----------------+-----------------+----------+----------------|
|               |                |13.0.0 - 13.1.0  |          |                |
|BIG-IP APM     |11.4.0 - 11.6.3 |12.0.0 - 12.1.3  |Medium    |OpenSSH         |
|               |                |??11.2.1         |          |                |
|               |                |10.2.1 - 10.2.4  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|               |                |13.0.0 - 13.1.0  |          |                |
|BIG-IP ASM     |11.4.0 - 11.6.3 |12.0.0 - 12.1.3  |Medium    |OpenSSH         |
|               |                |11.2.1           |          |                |
|               |                |10.2.1 - 10.2.4  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|               |                |13.0.0 - 13.1.0  |Not       |                |
|BIG-IP DNS     |None            |12.0.0 -         |vulnerable|None            |
|               |                |12.1.3           |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP Edge    |None            |11.2.1           |Not       |None            |
|Gateway        |                |10.2.1 - 10.2.4  |vulnerable|                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP GTM     |11.4.0 - 11.6.3 |11.2.1           |Medium    |OpenSSH         |
|               |                |10.2.1 - 10.2.4  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|               |                |13.0.0 - 13.1.0  |          |                |
|BIG-IP Link    |11.4.0 - 11.6.3 |12.0.0 - 12.1.3  |Medium    |OpenSSH         |
|Controller     |                |11.2.1           |          |                |
|               |                |10.2.1 - 10.2.4  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP PEM     |11.4.0 - 11.6.3 |13.0.0 - 13.1.0  |Medium    |OpenSSH         |
|               |                |12.0.0 - 12.1.3? |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP PSM     |11.4.0 - 11.4.1 |11.2.1           |Medium    |OpenSSH         |
|               |                |10.2.1 - 10.2.4  |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP         |None            |11.2.1           |Not       |None            |
|WebAccelerator |                |10.2.1 - 10.2.4  |vulnerable|                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IP WOM     |None            |11.2.1           |Not       |None            |
|               |                |10.2.1 - 10.2.4  |vulnerable|                |
|---------------+----------------+-----------------+----------+----------------|
|               |                |13.0.0 - 13.1.0  |          |                |
|BIG-IP WebSafe |11.6.0 - 11.6.3 |12.0.0 -         |Medium    |OpenSSH         |
|               |                |12.1.3           |          |                |
|---------------+----------------+-----------------+----------+----------------|
|ARX            |6.2.0 - 6.4.0   |None             |Low       |OpenSSH         |
|---------------+----------------+-----------------+----------+----------------|
|Enterprise     |None            |3.1.1            |Not       |None            |
|Manager        |                |                 |vulnerable|                |
|---------------+----------------+-----------------+----------+----------------|
|FirePass       |None            |7.0.0            |Not       |None            |
|               |                |                 |vulnerable|                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IQ Cloud   |4.0.0 - 4.5.0   |None             |Medium    |OpenSSH         |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IQ Device  |4.2.0 - 4.5.0   |None             |Medium    |OpenSSH         |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IQ Security|4.0.0 - 4.5.0   |None             |Medium    |OpenSSH         |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IQ ADC     |4.5.0           |None             |Medium    |OpenSSH         |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IQ         |5.0.0 - 5.1.0   |                 |          |                |
|Centralized    |4.6.0           |5.2.0 - 5.3.0    |Medium    |OpenSSH         |
|Management     |                |                 |          |                |
|---------------+----------------+-----------------+----------+----------------|
|BIG-IQ Cloud   |                |                 |          |                |
|and            |1.0.0           |None             |Medium    |OpenSSH         |
|Orchestration  |                |                 |          |                |
|---------------+----------------+-----------------+----------+----------------|
|F5 iWorkflow   |2.0.0 - 2.2.0   |2.3.0            |Medium    |OpenSSH         |
|---------------+----------------+-----------------+----------+----------------|
|LineRate       |None            |2.5.0 - 2.6.1    |Not       |None            |
|               |                |                 |vulnerable|                |
|---------------+----------------+-----------------+----------+----------------|
|Traffix SDC    |None            |5.0.0            |Not       |None            |
|               |                |4.0.0 - 4.4.0    |vulnerable|                |
+------------------------------------------------------------------------------+

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

To mitigate this vulnerability for BIG-IP systems, you can limit the allowable
IP address ranges for secure shell (SSH) access. To do so, refer to K5380:
Specifying allowable IP ranges for SSH access.

Impact of action: Before performing this action, ensure that the IP address
used to access the BIG-IP system from SSH is included in the allowable IP
address range. If the IP address is not included in the allowable IP address
range, you will lose access to the BIG-IP system.

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