ESB-2018.0597.4 - UPDATE [Appliance] F5 BIG-IP Products: Execute arbitrary code/commands - Existing account 2018-08-14

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

                              ESB-2018.0597.4
                K75543432: PHP vulnerability CVE-2017-11628
                              14 August 2018

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

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-11628  

Reference:         ESB-2017.2174
                   ESB-2017.1989.2

Original Bulletin: 
   https://support.f5.com/csp/article/K75543432

Revision History:  August 14 2018: Updated security advisory status table. 
                   July   24 2018: Updated security advisory status table.
                   June   19 2018: Updated security advisory status table.
                   March   1 2018: Initial Release

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K75543432:PHP vulnerability CVE-2017-11628

Security Advisory

Original Publication Date: 07 Nov, 2017

Latest   Publication Date: 14 Aug, 2018

Security Advisory Description

In PHP before 5.6.31, 7.x before 7.0.21, and 7.1.x before 7.1.7, a stack-based
buffer overflow in the zend_ini_do_op() function in Zend/zend_ini_parser.c
could cause a denial of service or potentially allow executing code. NOTE:
this is only relevant for PHP applications that accept untrusted input
(instead of the system's php.ini file) for the parse_ini_string or
parse_ini_file function, e.g., a web application for syntax validation of
php.ini directives. (CVE-2017-11628)

Impact

This vulnerability allows unauthorized disclosure of information, unauthorized
modification, and disruption of service.


Security Advisory Status

F5 Product Development has assigned ID 688625 (BIG-IP) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H75543432 on the Diagnostics >
Identified > Low 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     |Versions known |          |CVSSv3|Vulnerable   |
|Product       |known to be  |to be not      |Severity  |score^|component or |
|              |vulnerable   |vulnerable     |          |1     |feature      |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0 -     |               |          |      |             |
|              |13.1.0       |               |          |      |             |
|              |12.0.0 -     |14.0.0         |          |      |             |
|              |12.1.3       |13.1.0.8       |          |      |             |
|BIG-IP LTM    |11.6.1 -     |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.3       |11.6.3.2       |          |      |             |
|              |11.5.1 -     |11.5.7         |          |      |             |
|              |11.5.6       |               |          |      |             |
|              |11.2.1       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |14.0.0         |          |      |             |
|              |12.0.0 -     |13.1.0.8       |          |      |             |
|BIG-IP AAM    |12.1.3       |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.1 -     |11.6.3.2       |          |      |             |
|              |11.6.3       |11.5.7         |          |      |             |
|              |11.5.1 -     |               |          |      |             |
|              |11.5.6       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |               |          |      |             |
|              |12.0.0 -     |14.0.0         |          |      |             |
|BIG-IP AFM    |12.1.3       |13.1.0.8       |Low       |4.0   |PHP          |
|              |11.6.1 -     |12.1.3.2       |          |      |             |
|              |11.6.3       |11.5.7         |          |      |             |
|              |11.5.1 -     |               |          |      |             |
|              |11.5.6       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |               |          |      |             |
|              |12.0.0 -     |14.0.0         |          |      |             |
|BIG-IP        |12.1.3       |13.1.0.8       |          |      |             |
|Analytics     |11.6.1 -     |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.3       |11.6.3.2       |          |      |             |
|              |11.5.1 -     |11.5.7         |          |      |             |
|              |11.5.6       |               |          |      |             |
|              |11.2.1       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |               |          |      |             |
|              |12.0.0 -     |14.0.0         |          |      |             |
|              |12.1.3       |13.1.0.8       |          |      |             |
|BIG-IP APM    |11.6.1 -     |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.3       |11.6.3.2       |          |      |             |
|              |11.5.1 -     |11.5.7         |          |      |             |
|              |11.5.6       |               |          |      |             |
|              |11.2.1       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |               |          |      |             |
|              |12.0.0 -     |14.0.0         |          |      |             |
|              |12.1.3       |13.1.0.8       |          |      |             |
|BIG-IP ASM    |11.6.1 -     |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.3       |11.6.3.2       |          |      |             |
|              |11.5.1 -     |11.5.7         |          |      |             |
|              |11.5.6       |               |          |      |             |
|              |11.2.1       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |14.0.0         |          |      |             |
|BIG-IP DNS    |13.1.0       |13.1.0.8       |Low       |4.0   |PHP          |
|              |12.0.0 -     |12.1.3.2       |          |      |             |
|              |12.1.3       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IP Edge   |11.2.1       |None           |Low       |4.0   |PHP          |
|Gateway       |             |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |11.6.1 -     |               |          |      |             |
|              |11.6.3       |11.6.3.2       |          |      |             |
|BIG-IP GTM    |11.5.1 -     |11.5.7         |Low       |4.0   |PHP          |
|              |11.5.6       |               |          |      |             |
|              |11.2.1       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |               |          |      |             |
|              |12.0.0 -     |14.0.0         |          |      |             |
|BIG-IP Link   |12.1.3       |13.1.0.8       |          |      |             |
|Controller    |11.6.1 -     |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.3       |11.6.3.2       |          |      |             |
|              |11.5.1 -     |11.5.7         |          |      |             |
|              |11.5.6       |               |          |      |             |
|              |11.2.1       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |14.0.0         |          |      |             |
|              |12.0.0 -     |13.1.0.8       |          |      |             |
|BIG-IP PEM    |12.1.3       |12.1.3.2       |Low       |4.0   |PHP          |
|              |11.6.1 -     |11.6.3.2       |          |      |             |
|              |11.6.3       |11.5.7         |          |      |             |
|              |11.5.1 -     |               |          |      |             |
|              |11.5.6       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IP        |11.2.1       |None           |Low       |4.0   |PHP          |
|WebAccelerator|             |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|              |13.0.0-      |               |          |      |             |
|              |13.1.0       |14.0.0         |          |      |             |
|F5 WebSafe    |12.0.0 -     |13.1.0.8       |Low       |4.0   |PHP          |
|              |12.1.3       |12.1.3.2       |          |      |             |
|              |11.6.2 -     |11.6.3.2       |          |      |             |
|              |11.6.3       |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|ARX           |None         |6.2.0 - 6.4.0  |Not       |None  |None         |
|              |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|Enterprise    |None         |3.1.1          |Not       |None  |None         |
|Manager       |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IQ Cloud  |None         |4.4.0 - 4.5.0  |Not       |None  |None         |
|              |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IQ Device |None         |4.4.0 - 4.5.0  |Not       |None  |None         |
|              |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IQ        |None         |4.4.0 - 4.5.0  |Not       |None  |None         |
|Security      |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IQ ADC    |None         |4.5.0          |Not       |None  |None         |
|              |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IQ        |             |5.0.0 - 5.3.0  |Not       |      |             |
|Centralized   |None         |4.6.0          |vulnerable|None  |None         |
|Management    |             |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|BIG-IQ Cloud  |             |               |Not       |      |             |
|and           |None         |1.0.0          |vulnerable|None  |None         |
|Orchestration |             |               |          |      |             |
+--------------+-------------+---------------+----------+------+-------------+
|F5 iWorkflow  |None         |2.0.0 - 2.3.0  |Not       |None  |None         |
|              |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|LineRate      |None         |2.5.0 - 2.6.2  |Not       |None  |None         |
|              |             |               |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+
|Traffix SDC   |None         |5.0.0 - 5.1.0  |Not       |None  |None         |
|              |             |4.0.0 - 4.4.0  |vulnerable|      |             |
+--------------+-------------+---------------+----------+------+-------------+

^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.


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, you should permit management access to F5
products only over a secure network and restrict command line access for
affected systems to only trusted users. For more information, refer to K13309:
Restricting access to the Configuration utility by source IP address (11.x -
13.x) and K13092: Overview of securing access to the BIG-IP system.


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
  o K167: Downloading software and firmware from F5

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