Operating System:

[Appliance]

Published:

25 September 2019

Protect yourself against future threats.

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

                               ESB-2019.3605
                REST Framework vulnerability CVE-2019-6651
                             25 September 2019

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

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

Product:           BIG-IP products
                   BIG-IQ products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6651  

Original Bulletin: 
   https://support.f5.com/csp/article/K89509323

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

K89509323: REST Framework vulnerability CVE-2019-6651

Security Advisory

Original Publication Date: 25 Sep, 2019

Security Advisory Description

The BIG-IP/BIG-IQ Configuration utility login page may not follow best security
practices when handling a malicious request. (CVE-2019-6651)

Impact

The Configuration utility login page returns an inconsistent HTTP response when
processing modified requests which may provide clues to an attacker looking to
exploit vulnerabilities on the system.

Security Advisory Status

F5 Product Development has assigned ID 794389 (BIG-IP, BIG-IQ, F5 iWorkflow,
and Enterprise Manager) 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|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |15.x  |15.0.0    |15.0.1    |          |      |          |
|                   +------+----------+----------+          |      |          |
|                   |14.x  |14.0.0 -  |14.1.2    |          |      |          |
|BIG-IP (LTM, AAM,  |      |14.1.0    |14.0.1    |          |      |          |
|AFM, Analytics,    +------+----------+----------+          |      |          |
|APM, ASM, DNS, Edge|13.x  |13.1.0 -  |13.1.3    |          |      |REST      |
|Gateway, FPS, GTM, |      |13.1.1    |          |High      |7.5   |framework |
|Link Controller,   +------+----------+----------+          |      |          |
|PEM,               |12.x  |12.1.0 -  |12.1.5    |          |      |          |
|WebAccelerator)    |      |12.1.4    |          |          |      |          |
|                   +------+----------+----------+          |      |          |
|                   |11.x  |11.5.2 -  |11.6.5    |          |      |          |
|                   |      |11.6.4    |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|Enterprise Manager |3.x   |3.1.1     |None      |High      |7.5   |REST      |
|                   |      |          |          |          |      |framework |
+-------------------+------+----------+----------+----------+------+----------+
|                   |7.x   |7.0.0     |None      |          |      |          |
|                   +------+----------+----------+          |      |          |
|BIG-IQ Centralized |6.x   |6.0.0 -   |None      |          |      |REST      |
|Management         |      |6.1.0     |          |High      |7.5   |framework |
|                   +------+----------+----------+          |      |          |
|                   |5.x   |5.2.0 -   |None      |          |      |          |
|                   |      |5.4.0     |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|F5 iWorkflow       |2.x   |2.3.0     |None      |High      |7.5   |REST      |
|                   |      |          |          |          |      |framework |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC        |5.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|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 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

To mitigate this vulnerability, you should permit connectivity access to the
affected F5 products only over a secure network and restrict access for the
affected systems to only trusted users. For more information, refer to one or
more of the following articles:

  o K13309: Restricting access to the Configuration utility by source IP
    address (11.x - 15.x)
  o K13092: Overview of securing access to the BIG-IP system
  o K31401771: Restricting access to the BIG-IQ or F5 iWorkflow user interface
    by source IP address
  o K39403510: Managing the port lockdown configuration on the BIG-IQ system

Acknowledgements

F5 would like to acknowledge Enter of The Tarantula Team - VinCSS (a member of
Vingroup) for bringing this issue to our attention, and for following the
highest standards of responsible disclosure.

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