ESB-2018.3361 - [Appliance] F5 BIG-IP products: Denial of service - Remote/unauthenticated 2018-10-31

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3361
               K26583415: MQTT vulnerability CVE-2018-15323
                              31 October 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-2018-15323  

Original Bulletin: 
   https://support.f5.com/csp/article/K26583415

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K26583415: MQTT vulnerability CVE-2018-15323

Security Advisory

Original Publication Date: Oct 31, 2018

Security Advisory Description

In certain circumstances, when processing traffic through a Virtual Server with
an associated MQTT profile, the TMM process may produce a core file and take
the configured HA action. (CVE-2018-15323)

Impact

This vulnerability allows remote attackers to cause a denial-of-service (DoS)
on the BIG-IP system. The BIG-IP system temporarily fails to process traffic as
it recovers from a Traffic Management Microkernel (TMM) restart, and devices
configured in a device group may fail over.

Security Advisory Status

F5 Product Development has assigned ID 717888 (BIG-IP) to this vulnerability.

To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. 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. For more information
about security advisory versioning, refer to K51812227: Understanding Security
Advisory versioning.

+------------------+------+----------+----------+-----------+------+----------+
|                  |      |Versions  |Fixes     |           |CVSSv3|Vulnerable|
|Product           |Branch|known to  |introduced|Severity   |score^|component |
|                  |      |be        |in        |           |1     |or feature|
|                  |      |vulnerable|          |           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|                  |14.x  |14.0.0    |14.0.0.3  |           |      |          |
|                  +------+----------+----------+           |      |          |
|BIG-IP (LTM,      |13.x  |13.0.0 -  |13.1.1.2  |           |      |          |
|AAM,AFM,          |      |13.1.1    |          |           |      |          |
|Analytics, APM    +------+----------+----------+Medium     |5.9   |MQTT      |
|ASM, Edge Gateway,|12.x  |None      |Not       |           |      |profile   |
|FPS, PSM, Websafe)|      |          |applicable|           |      |          |
|                  +------+----------+----------+           |      |          |
|                  |11.x  |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|                  |14.x  |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
|                  +------+----------+----------+           |      |          |
|                  |13.x  |None      |Not       |           |      |          |
|BIG-IP (DNS, GTM, |      |          |applicable|Not        |      |          |
|Link Controller,, +------+----------+----------+vulnerable^|None  |None      |
|WebAccelerator)   |12.x  |None      |Not       |2          |      |          |
|                  |      |          |applicable|           |      |          |
|                  +------+----------+----------+           |      |          |
|                  |11.x  |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|Enterprise Manager|3.x   |None      |Not       |Not        |None  |None      |
|                  |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|                  |6.x   |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
|                  +------+----------+----------+           |      |          |
|BIG-IQ Centralized|5.x   |None      |Not       |Not        |None  |None      |
|Management        |      |          |applicable|vulnerable |      |          |
|                  +------+----------+----------+           |      |          |
|                  |4.x   |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|BIG-IQ Cloud and  |1.x   |None      |Not       |Not        |None  |None      |
|Orchestration     |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|F5 iWorkflow      |2.x   |None      |Not       |Not        |None  |None      |
|                  |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|                  |5.x   |None      |Not       |           |      |          |
|                  |      |          |applicable|Not        |      |          |
|Traffix SDC       +------+----------+----------+vulnerable |None  |None      |
|                  |4.x   |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+

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

^2 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 Fixes introduced in 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 K51812227: Understanding Security Advisory versioning
  o K41942608: Overview of Security Advisory articles
  o K4602: Overview of the F5 security vulnerability response policy
  o K4918: Overview of the F5 critical issue hotfix policy
  o K9502: BIG-IP hotfix and point release matrix
  o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
  o K167: Downloading software and firmware from F5
  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents

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