ESB-2018.0625.3 - UPDATE [Appliance] F5 BIG-IP Products: Denial of service - Remote/unauthenticated 2018-08-21

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

                              ESB-2018.0625.3
            K75429050: Apache HTTPD vulnerability CVE-2017-7679
                              21 August 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-2017-7679  

Reference:         ESB-2018.0312
                   ASB-2017.0219
                   ESB-2017.1583
                   ESB-2017.1533

Original Bulletin: 
   https://support.f5.com/csp/article/K75429050

Revision History:  August 21 2018: Updated "Security Advisory Status" section
                   April   4 2018: Updated "Security Advisory Status" section
                   March   5 2018: Initial Release

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

K75429050:Apache HTTPD vulnerability CVE-2017-7679

Security Advisory

Original Publication Date: 18 Jul, 2017

Latest   Publication Date: 18 Aug, 2018

Security Advisory Description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_mime can read
one byte past the end of a buffer when sending a malicious Content-Type
response header. (CVE-2017-7679)

Impact

A remote attacker may exploit this vulnerability by using a malicious response
header to cause a denial of service (DoS) on the Apache httpd service.


Security Advisory Status

F5 Product Development has assigned ID 672667 (BIG-IP), ID 672977 (Enterprise
Manager), and ID 431234 (ARX) to this vulnerability. Additionally, BIG-IP
iHealth may list Heuristic H75429050 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 |           |Vulnerable         |
|Product       |known to be  |to be not      |Severity   |component or       |
|              |vulnerable   |vulnerable     |           |feature            |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |                   |
|              |12.0.0 -     |13.1.0.2       |           |Apache HTTPD       |
|BIG-IP LTM    |12.1.3       |13.0.1         |Low        |(Configuration     |
|              |11.4.1 -     |12.1.3.2       |           |utility, iControl) |
|              |11.6.3       |               |           |                   |
|              |11.2.1       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |Apache HTTPD       |
|BIG-IP AAM    |12.0.0 -     |13.1.0.2       |Low        |(Configuration     |
|              |12.1.3       |13.0.1         |           |utility, iControl) |
|              |11.4.1 -     |12.1.3.2       |           |                   |
|              |11.6.3       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |Apache HTTPD       |
|BIG-IP AFM    |12.0.0 -     |13.1.0.2       |Low        |(Configuration     |
|              |12.1.3       |13.0.1         |           |utility, iControl) |
|              |11.4.1 -     |12.1.3.2       |           |                   |
|              |11.6.3       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |                   |
|BIG-IP        |12.0.0 -     |13.1.0.2       |           |Apache HTTPD       |
|Analytics     |12.1.3       |13.0.1         |Low        |(Configuration     |
|              |11.4.1 -     |12.1.3.2       |           |utility, iControl) |
|              |11.6.3       |               |           |                   |
|              |11.2.1       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |                   |
|              |12.0.0 -     |13.1.0.2       |           |Apache HTTPD       |
|BIG-IP APM    |12.1.3       |13.0.1         |Low        |(Configuration     |
|              |11.4.1 -     |12.1.3.2       |           |utility, iControl) |
|              |11.6.3       |               |           |                   |
|              |11.2.1       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |                   |
|              |12.0.0 -     |13.1.0.2       |           |Apache HTTPD       |
|BIG-IP ASM    |12.1.3       |13.0.1         |Low        |(Configuration     |
|              |11.4.1 -     |12.1.3.2       |           |utility, iControl) |
|              |11.6.3       |               |           |                   |
|              |11.2.1       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |14.0.0         |           |Apache HTTPD       |
|BIG-IP DNS    |13.1.1       |13.1.0.2       |Low        |(Configuration     |
|              |12.0.0 -     |13.0.1         |           |utility, iControl) |
|              |12.1.3       |12.1.3.2       |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|BIG-IP Edge   |             |               |           |Apache HTTPD       |
|Gateway       |11.2.1       |None           |Low        |(Configuration     |
|              |             |               |           |utility, iControl) |
+--------------+-------------+---------------+-----------+-------------------+
|              |11.4.1 -     |               |           |Apache HTTPD       |
|BIG-IP GTM    |11.6.3       |None           |Low        |(Configuration     |
|              |11.2.1       |               |           |utility, iControl) |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |                   |
|BIG-IP Link   |12.0.0 -     |13.1.0.2       |           |Apache HTTPD       |
|Controller    |12.1.3       |13.0.1         |Low        |(Configuration     |
|              |11.4.1 -     |12.1.3.2       |           |utility, iControl) |
|              |11.6.3       |               |           |                   |
|              |11.2.1       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |13.0.0 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |Apache HTTPD       |
|BIG-IP PEM    |12.0.0 -     |13.1.0.2       |Low        |(Configuration     |
|              |12.1.3       |13.0.1         |           |utility, iControl) |
|              |11.4.1 -     |12.1.3.2       |           |                   |
|              |11.6.3       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |             |               |           |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 -     |               |           |                   |
|              |13.1.1       |14.0.0         |           |Apache HTTPD       |
|BIG-IP WebSafe|12.0.0 -     |13.1.0.2       |Low        |(Configuration     |
|              |12.1.3       |13.0.1         |           |utility, iControl) |
|              |11.6.0 -     |12.1.3.2       |           |                   |
|              |11.6.3       |               |           |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |             |               |           |Management API     |
|ARX           |6.2.0 - 6.4.0|None           |Medium     |(disabled by       |
|              |             |               |           |default)           |
+--------------+-------------+---------------+-----------+-------------------+
|Enterprise    |             |               |           |Apache HTTPD       |
|Manager       |3.1.1        |None           |Low        |(Configuration     |
|              |             |               |           |utility, iControl) |
+--------------+-------------+---------------+-----------+-------------------+
|              |             |               |Not        |                   |
|BIG-IQ Cloud  |None         |4.4.0 - 4.5.0  |vulnerable^|None               |
|              |             |               |1          |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |             |               |Not        |                   |
|BIG-IQ Device |None         |4.4.0 - 4.5.0  |vulnerable^|None               |
|              |             |               |1          |                   |
+--------------+-------------+---------------+-----------+-------------------+
|BIG-IQ        |             |               |Not        |                   |
|Security      |None         |4.4.0 - 4.5.0  |vulnerable^|None               |
|              |             |               |1          |                   |
+--------------+-------------+---------------+-----------+-------------------+
|              |             |               |Not        |                   |
|BIG-IQ ADC    |None         |4.5.0          |vulnerable^|None               |
|              |             |               |1          |                   |
+--------------+-------------+---------------+-----------+-------------------+
|BIG-IQ        |             |5.0.0 - 5.2.0  |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 - 2.2.0  |vulnerable^|None               |
|              |             |               |1          |                   |
+--------------+-------------+---------------+-----------+-------------------+
|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 |                   |
+--------------+-------------+---------------+-----------+-------------------+

^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

BIG-IP and Enterprise Manager

To mitigate this vulnerability, you should limit access to the Configuration
utility to use only secure networks.

ARX

To mitigate this vulnerability, you should limit access to the ARX GUI to use
only secure networks. Additionally, you should avoid enabling the API
functionality.


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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