ESB-2018.1156 - [Appliance] F5 BIG-IP Products: Execute arbitrary code/commands - Remote/unauthenticated 2018-04-16

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1156
                 K95432245:PHP vulnerability CVE-2016-5768
                               16 April 2018

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

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-5768  

Reference:         ESB-2017.0119
                   ESB-2016.2728
                   ESB-2016.2213
                   ESB-2016.2007

Original Bulletin: 
   https://support.f5.com/csp/article/K95432245

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K95432245:PHP vulnerability CVE-2016-5768

Security Advisory

Original Publication Date: 14 Oct, 2016

Latest   Publication Date: 14 Apr, 2018

Security Advisory Description

Double free vulnerability in the _php_mb_regex_ereg_replace_exec function in
php_mbregex.c in the mbstring extension in PHP before 5.5.37, 5.6.x before
5.6.23, and 7.x before 7.0.8 allows remote attackers to execute arbitrary code
or cause a denial of service (application crash) by leveraging a callback
exception. (CVE-2016-5768)

Impact

While the vulnerable code exists, F5 products are not vulnerable in the
default, standard, or recommended configurations.


Security Advisory Status

F5 Product Development has assigned ID 601268 (BIG-IP) and ID 608721 (BIG-IQ
and F5 iWorkflow) to this vulnerability.

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        |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP LTM     |11.4.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|               |11.2.1         |11.6.2           |          |               |
|               |10.2.1 - 10.2.4|11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP AAM     |11.4.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|               |          |11.6.2           |          |               |
|               |               |11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |               |13.0.0           |          |               |
|BIG-IP AFM     |12.0.0 - 12.1.2|12.1.2 HF1       |Low       |PHP            |
|               |11.4.0 - 11.6.1|11.6.2           |          |               |
|               |               |11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP         |11.4.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|Analytics      |11.2.1         |11.6.2           |          |               |
|               |               |11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP APM     |11.4.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|               |11.2.1         |11.6.2           |          |               |
|               |10.2.1 - 10.2.4|11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP ASM     |11.4.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|               |11.2.1         |11.6.2           |          |               |
|               |10.2.1 - 10.2.4|11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP DNS     |12.0.0 - 12.1.2|13.0.0           |Low       |PHP            |
|               |               |12.1.2 HF1       |          |               |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP Edge    |11.2.1         |None             |Low       |PHP            |
|Gateway        |10.2.1 - 10.2.4|                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |11.4.0 - 11.6.1|11.6.2           |          |               |
|BIG-IP GTM     |11.2.1         |11.5.6           |Low       |PHP            |
|               |10.2.1 - 10.2.4|                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP Link    |11.4.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|Controller     |11.2.1         |11.6.2           |          |               |
|               |10.2.1 - 10.2.4|11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |               |13.0.0           |          |               |
|BIG-IP PEM     |12.0.0 - 12.1.2|12.1.2 HF1       |Low       |PHP            |
|               |11.4.0 - 11.6.1|11.6.2           |          |               |
|               |               |11.5.6           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP PSM     |11.4.0 - 11.4.1|None             |Low       |PHP            |
|               |10.2.1 - 10.2.4|                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP         |11.2.1         |None             |Low       |PHP            |
|WebAccelerator |10.2.1 - 10.2.4|                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IP WOM     |11.2.1         |None             |Low       |PHP            |
|               |10.2.1 - 10.2.4|                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|               |12.0.0 - 12.1.2|13.0.0           |          |               |
|BIG-IP WebSafe |11.6.0 - 11.6.1|12.1.2 HF1       |Low       |PHP            |
|               |               |11.6.2           |          |               |
+---------------+---------------+-----------------+----------+---------------+
|ARX            |None           |6.2.0 - 6.4.0    |Not       |None           |
|               |               |                 |vulnerable|               |
+---------------+---------------+-----------------+----------+---------------+
|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             |Low       |PHP            |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Device  |4.2.0 - 4.5.0  |None             |Low       |PHP            |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Security|4.0.0 - 4.5.0  |None             |Low       |PHP            |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ ADC     |4.5.0          |None             |Low       |PHP            |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ         |5.0.0 - 5.1.0  |                 |          |               |
|Centralized    |4.6.0          |None             |Low       |PHP            |
|Management     |               |                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|BIG-IQ Cloud   |               |                 |          |               |
|and            |1.0.0          |None             |Low       |PHP            |
|Orchestration  |               |                 |          |               |
+---------------+---------------+-----------------+----------+---------------+
|F5 iWorkflow   |None           |2.0.0            |Not       |None           |
|               |               |                 |vulnerable|               |
+---------------+---------------+-----------------+----------+---------------+
|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

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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