ESB-2018.2633.2 - UPDATE [Appliance] F5 Products: Unauthorised access - Remote/unauthenticated 2018-10-24

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

                              ESB-2018.2633.2
                           Python vulnerability
                              24 October 2018

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

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

Product:           F5 BIG-IP products
                   F5 Enterprise Manager
                   F5 BIG-IQ products
                   F5 iWorkflow
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2014-9365  

Reference:         ESB-2017.1879
                   ESB-2017.1045
                   ESB-2016.1367.2
                   ESB-2015.2868

Original Bulletin: 
   https://support.f5.com/csp/article/K11068141

Revision History:  October   24 2018: Additional information provided in Mitigation section
                   September  5 2018: Initial Release

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K11068141: Python vulnerability CVE-2014-9365

Security Advisory

Original Publication Date: Aug 30, 2018
Updated Date: Oct 23, 2018

Security Advisory Description

The HTTP clients in the (1) httplib, (2) urllib, (3) urllib2, and (4) xmlrpclib
libraries in CPython (aka Python) 2.x before 2.7.9 and 3.x before 3.4.3, when
accessing an HTTPS URL, do not (a) check the certificate against a trust store
or verify that the server hostname matches a domain name in the subject's (b)
Common Name or (c) subjectAltName field of the X.509 certificate, which allows
man-in-the-middle attackers to spoof SSL servers via an arbitrary valid
certificate. (CVE-2014-9365)

Impact

This vulnerability allows unauthorized disclosure of information and
unauthorized modification.

Security Advisory Status

F5 Product Development has assigned IDs 739439 and 739444 (BIG-IP, BIG-IQ and
F5 iWorkflow) and ID 739439 (Enterprise Manager) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H11068141 on the Diagnostics >
Identified > Medium page.

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    |None      |          |      |          |
|BIG-IP (LTM, AAM,  +------+----------+----------+          |      |          |
|AFM, Analytics,    |13.x  |13.0.0 -  |None      |          |      |          |
|APM, ASM, DNS, Edge|      |13.1.1    |          |          |      |          |
|Gateway, FPS, GTM, +------+----------+----------+Medium    |4.7   |Python    |
|Link Controller,   |12.x  |12.1.0 -  |None      |          |      |          |
|PEM,               |      |12.1.3    |          |          |      |          |
|WebAccelerator)    +------+----------+----------+          |      |          |
|                   |11.x  |11.5.0 -  |None      |          |      |          |
|                   |      |11.6.3    |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|Enterprise Manager |3.x   |3.1.1     |Not       |Medium    |4.7   |Python    |
|                   |      |None      |applicable|          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |6.x   |6.0.0 -   |None      |          |      |          |
|                   |      |6.0.1     |          |          |      |          |
|BIG-IQ Centralized +------+----------+----------+          |      |          |
|Management         |5.x   |5.0.0 -   |None      |Medium    |4.7   |Python    |
|                   |      |5.4.0     |          |          |      |          |
|                   +------+----------+----------+          |      |          |
|                   |4.x   |4.6.0     |None      |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|BIG-IQ Cloud and   |1.x   |1.0.0     |None      |Medium    |4.7   |None      |
|Orchestration      |      |          |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|F5 iWorkflow       |2.x   |2.3.0     |None      |Medium    |4.7   |None      |
+-------------------+------+----------+----------+----------+------+----------+
|                   |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.

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, ensure that Python scripts communicate only
with trusted servers. Manually download and install update packages instead of
using the automated IP Intelligence (IPI) update scripts, which access external
update servers. IPI is not enabled by default in the BIG-IP system.

Even though the default setting for IPI is Disabled, the BIG-IP system will
be vulnerable if the user installs their own Python scripts that use these
vulnerable libraries to make calls to external sites that have X.509
certificates. You must have Admin privileges to install non-standard Python
scripts. Be sure to restrict system access to only trusted users.

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 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
  o K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems

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