ESB-2018.3601 - [Appliance] F5 BIG-IP Products: Increased privileges - Existing account 2018-11-19

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

                               ESB-2018.3601
                           OpenSSH vulnerability
                             19 November 2018

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

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-10012  

Reference:         ASB-2017.0116
                   ESB-2017.1889
                   ESB-2017.0784
                   ESB-2017.0572

Original Bulletin: 
   https://support.f5.com/csp/article/K62201745

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K62201745: OpenSSH vulnerability CVE-2016-10012

Security Advisory

Original Publication Date: Jan 28, 2017
Updated Date: Nov 17, 2018

Security Advisory Description

The shared memory manager (associated with pre-authentication compression) in
sshd in OpenSSH before 7.4 does not ensure that a bounds check is enforced by
all compilers, which might allow local users to gain privileges by leveraging
access to a sandboxed privilege-separation process, related to the m_zback and
m_zlib data structures. (CVE-2016-10012)

Impact

A locally authenticated attacker may be able to exploit this vulnerability and
gain elevated privileges.

Security Advisory Status

F5 Product Development has assigned ID 637629 (BIG-IP, BIG-IQ, Enterprise
Manager, and F5 iWorkflow) and INSTALLER-2868 (Traffix SDC) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H62201745 on the
Diagnostics > Identified > Low 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.

+---------------+---------------+-----------------+-----------+---------------+
|               |Versions known |Versions known to|           |Vulnerable     |
|Product        |to be          |be not vulnerable|Severity   |component or   |
|               |vulnerable     |                 |           |feature        |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|               |13.0.0 - 13.1.0|                 |           |               |
|BIG-IP LTM     |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.3|                 |           |               |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|               |13.0.0         |                 |           |               |
|BIG-IP AAM     |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.3|                 |           |               |
|               |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|BIG-IP AFM     |13.0.0- 13.1.0 |None             |Low        |OpenSSH        |
|               |12.0.0 - 12.1.3|                 |           |               |
|               |11.4.0 - 11.6.1|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|BIG-IP         |13.0.0- 13.1.0 |                 |           |               |
|Analytics      |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.3|                 |           |               |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|               |13.0.0- 13.1.0 |                 |           |               |
|BIG-IP APM     |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.3|                 |           |               |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0- 13.1.0 |                 |           |               |
|BIG-IP ASM     |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.3|                 |           |               |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|BIG-IP DNS     |13.0.0- 13.1.0 |None             |Low        |OpenSSH        |
|               |12.0.0 - 12.1.3|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP Edge    |11.2.1         |None             |Low        |OpenSSH        |
|Gateway        |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP GTM     |11.4.0 - 11.6.3|None             |Low        |OpenSSH        |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|BIG-IP Link    |13.0.0         |                 |           |               |
|Controller     |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.1|                 |           |               |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0- 13.1.0 |                 |           |               |
|BIG-IP PEM     |12.0.0 - 12.1.3|None             |Low        |OpenSSH        |
|               |11.4.0 - 11.6.3|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP PSM     |11.4.0 - 11.4.1|None             |Low        |OpenSSH        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP         |11.2.1         |None             |Low        |OpenSSH        |
|WebAccelerator |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |14.0.0         |                 |           |               |
|               |13.0.0- 13.1.0 |                 |Low        |               |
|BIG-IP WebSafe |12.0.0 - 12.1.3|None             |           |OpenSSH        |
|               |11.6.0 - 11.6.3|                 |           |               |
|               |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|Enterprise     |3.1.1          |None             |Low        |OpenSSH        |
|Manager        |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Cloud   |4.0.0 - 4.5.0  |None             |Low        |OpenSSH        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Device  |4.2.0 - 4.5.0  |None             |Low        |OpenSSH        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Security|4.0.0 - 4.5.0  |None             |Low        |OpenSSH        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ ADC     |4.5.0          |None             |Low        |OpenSSH        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ         |5.0.0 - 6.0.1.1|                 |           |               |
|Centralized    |4.6.0          |None             |Low        |OpenSSH        |
|Management     |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Cloud   |               |                 |           |               |
|and            |1.0.0          |None             |Low        |OpenSSH        |
|Orchestration  |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|F5 iWorkflow   |2.0.0 - 2.0.2  |None             |Low        |OpenSSH        |
+---------------+---------------+-----------------+-----------+---------------+
|               |               |                 |Not        |               |
|LineRate       |None           |2.5.0 - 2.6.2    |vulnerable^|None           |
|               |               |                 |1          |               |
+---------------+---------------+-----------------+-----------+---------------+
|Traffix SDC    |5.0.0 - 5.1.0  |None             |Low        |OpenSSH        |
|               |4.0.0 - 4.4.0  |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+

^1 The specified products contain the affected code. However, F5 identifies the
vulnerability status as Not vulnerable because the attacker cannot exploit the
code in default, standard, or recommended configurations.

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.

Mitigation

To mitigate this vulnerability for affected F5 products, you should permit
management access over a secure network and limit secure shell (SSH) access to
only trusted users. For more information about securing access to BIG-IP
systems, refer to K13309: Restricting access to the Configuration utility by
source IP address (11.x - 14.x) and K13092: Overview of securing access to the
BIG-IP system.

Supplemental Information

  o K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents
  o K4602: Overview of the F5 security vulnerability response policy
  o K4918: Overview of the F5 critical issue hotfix policy
  o K167: Downloading software and firmware from F5

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