ESB-2018.0024 - [Appliance] F5 BIG-IP ASM: Denial of service - Existing account 2018-01-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0024
           K08383757: perl-XML-Twig vulnerability CVE-2016-9180
                              2 January 2018

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

Product:           F5 BIG-IP ASM
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-9180  

Original Bulletin: 
   https://support.f5.com/csp/article/K08383757

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K08383757: perl-XML-Twig vulnerability CVE-2016-9180

Security Advisory

Original Publication Date: Feb 11, 2017
Updated Date: Dec 27, 2017

Applies to (see versions):

Security Advisory Description

perl-XML-Twig: The option to `expand_external_ents`, documented as controlling
external entity expansion in XML::Twig does not work. External entities are
always expanded, regardless of the option's setting. (CVE-2016-9180)

Impact

An authenticated user with a BIG-IP ASM administrative role, such as Policy
Editor, may be able to craft an XML message which, when processed by the
ASMConfig process using perl-XML-Twig, may cause a denial of service (DoS)
or potentially an information disclosure.

Security Advisory Status

F5 Product Development has assigned ID 641311 (BIG-IP) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H644152 on the Diagnostics >
Identified > High 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     |Versions known |           |Vulnerable component|
|Product       |known to be  |to be not      |Severity   |or feature          |
|              |vulnerable   |vulnerable     |           |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP LTM    |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |11.4.0 - 11.6.2|1          |                    |
|              |             |11.2.1         |           |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP AAM    |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |11.4.0 - 11.6.2|1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP AFM    |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |11.4.0 - 11.6.2|1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP        |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|Analytics     |             |11.4.0 - 11.6.2|1          |                    |
|              |             |11.2.1         |           |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP APM    |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |11.4.0 - 11.6.2|1          |                    |
|              |             |11.2.1         |           |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |13.0.0       |               |           |                    |
|              |12.0.0 -     |               |           |Configuration       |
|BIG-IP ASM    |12.1.3       |13.1.0         |High       |utility, REST API,  |
|              |11.4.0 -     |               |           |iControl API        |
|              |11.6.2       |               |           |                    |
|              |11.2.1       |               |           |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP DNS    |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|BIG-IP Edge   |             |               |Not        |                    |
|Gateway       |None         |11.2.1         |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |11.4.0 - 11.6.2|Not        |                    |
|BIG-IP GTM    |None         |11.2.1         |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP Link   |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|Controller    |             |11.4.0 - 11.6.2|1          |                    |
|              |             |11.2.1         |           |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP PEM    |None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |11.4.0 - 11.6.2|1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |               |Not        |                    |
|BIG-IP PSM    |None         |11.4.0 - 11.4.1|vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|BIG-IP        |             |               |Not        |                    |
|WebAccelerator|None         |11.2.1         |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |13.0.0 - 13.1.0|Not        |                    |
|BIG-IP WebSafe|None         |12.0.0 - 12.1.3|vulnerable^|None                |
|              |             |11.4.0 - 11.6.2|1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|ARX           |None         |6.2.0 - 6.4.0  |Not        |None                |
|              |             |               |vulnerable |                    |
+--------------+-------------+---------------+-----------+--------------------+
|Enterprise    |             |               |Not        |                    |
|Manager       |None         |3.1.1          |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |               |Not        |                    |
|BIG-IQ Cloud  |None         |4.0.0 - 4.5.0  |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |               |Not        |                    |
|BIG-IQ Device |None         |4.2.0 - 4.5.0  |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|BIG-IQ        |             |               |Not        |                    |
|Security      |None         |4.0.0 - 4.5.0  |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |               |Not        |                    |
|BIG-IQ ADC    |None         |4.5.0          |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|BIG-IQ        |             |5.0.0 - 5.1.0  |Not        |                    |
|Centralized   |None         |4.6.0          |vulnerable^|None                |
|Management    |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|BIG-IQ Cloud  |             |               |Not        |                    |
|and           |None         |1.0.0          |vulnerable^|None                |
|Orchestration |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|              |             |               |Not        |                    |
|F5 iWorkflow  |None         |2.0.0 - 2.0.2  |vulnerable^|None                |
|              |             |               |1          |                    |
+--------------+-------------+---------------+-----------+--------------------+
|LineRate      |None         |2.5.0 - 2.6.1  |Not        |None                |
|              |             |               |vulnerable |                    |
+--------------+-------------+---------------+-----------+--------------------+
|Traffix SDC   |None         |5.0.0 - 5.1.0  |Not        |None                |
|              |             |4.0.0 - 4.4.0  |vulnerable |                    |
+--------------+-------------+---------------+-----------+--------------------+

^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

None

Supplemental Information

  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

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