ESB-2018.1010 - [Appliance] F5 BIG-IP Products: Denial of service - Remote/unauthenticated 2018-04-04

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

                               ESB-2018.1010
            K83043359:Apache HTTPD vulnerability CVE-2017-3169
                               4 April 2018

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

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-3169  

Reference:         ASB-2017.0219
                   ESB-2017.3208
                   ESB-2017.2778
                   ESB-2017.2056

Original Bulletin: 
   https://support.f5.com/csp/article/K83043359

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

K83043359:Apache HTTPD vulnerability CVE-2017-3169

Security Advisory

Original Publication Date: 14 Jul, 2017

Latest   Publication Date: 03 Apr, 2018

Security Advisory Description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may
dereference a NULL pointer when third-party modules call
ap_hook_process_connection() during an HTTP request to an HTTPS port. (
CVE-2017-3169)

Impact

When the vulnerability is exploited, the Apache httpd process may experience a
denial of service (DoS). As a result, users may not be able to access the
Configuration utility or use iControl to manage the affected systems.


Security Advisory Status

F5 Product Development has assigned ID 673607 (BIG-IP) and ID 431234 (ARX) to
this vulnerability. Additionally, BIG-IP iHealth may list Heuristic H83043359
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 |          |Vulnerable component|
|Product       |to be         |to be not      |Severity  |or feature          |
|              |vulnerable    |vulnerable     |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP LTM    |12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
|              |11.2.1        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP AAM    |12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP AFM    |12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP        |12.1.3        |13.1.0         |Low       |(Configuration      |
|Analytics     |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
|              |11.2.1        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP APM    |12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
|              |11.2.1        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP ASM    |12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
|              |11.2.1        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP DNS    |12.0.0 -      |13.1.0         |Low       |(Configuration      |
|              |12.1.3        |12.1.3.2       |          |utility, iControl)  |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IP Edge   |              |               |          |Apache HTTPD        |
|Gateway       |11.2.1        |None           |Low       |(Configuration      |
|              |              |               |          |utility, iControl)  |
+--------------+--------------+---------------+----------+--------------------+
|              |11.4.1 -      |               |          |Apache HTTPD        |
|BIG-IP GTM    |11.6.2        |None           |Low       |(Configuration      |
|              |11.2.1        |               |          |utility, iControl)  |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP Link   |12.1.3        |13.1.0         |Low       |(Configuration      |
|Controller    |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
|              |11.2.1        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP PEM    |12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.4.1 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |              |               |          |Apache HTTPD        |
|BIG-IP PSM    |11.4.1        |None           |Low       |(Configuration      |
|              |              |               |          |utility, iControl)  |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IP        |              |               |          |Apache HTTPD        |
|WebAccelerator|11.2.1        |None           |Low       |(Configuration      |
|              |              |               |          |utility, iControl)  |
+--------------+--------------+---------------+----------+--------------------+
|              |13.0.0        |               |          |                    |
|              |12.0.0 -      |13.1.0.2       |          |Apache HTTPD        |
|BIG-IP WebSafe|12.1.3        |13.1.0         |Low       |(Configuration      |
|              |11.6.0 -      |12.1.3.2       |          |utility, iControl)  |
|              |11.6.2        |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|              |              |               |          |Management API      |
|ARX           |6.2.0 - 6.4.0 |None           |Medium    |(disabled by        |
|              |              |               |          |default)            |
+--------------+--------------+---------------+----------+--------------------+
|Enterprise    |None          |3.1.1          |Not       |None                |
|Manager       |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IQ Cloud  |None          |4.4.0 - 4.5.0  |Not       |None                |
|              |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IQ Device |None          |4.4.0 - 4.5.0  |Not       |None                |
|              |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IQ        |None          |4.4.0 - 4.5.0  |Not       |None                |
|Security      |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IQ ADC    |None          |4.5.0          |Not       |None                |
|              |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IQ        |              |5.0.0 - 5.3.0  |Not       |                    |
|Centralized   |None          |4.6.0          |vulnerable|None                |
|Management    |              |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|BIG-IQ Cloud  |              |               |Not       |                    |
|and           |None          |1.0.0          |vulnerable|None                |
|Orchestration |              |               |          |                    |
+--------------+--------------+---------------+----------+--------------------+
|F5 iWorkflow  |None          |2.0.0 - 2.3.0  |Not       |None                |
|              |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|LineRate      |None          |2.5.0 - 2.6.2  |Not       |None                |
|              |              |               |vulnerable|                    |
+--------------+--------------+---------------+----------+--------------------+
|Traffix SDC   |None          |5.0.0 - 5.1.0  |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.

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 the 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

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