ESB-2018.2158.2 - UPDATE [Appliance] F5 BIG-IP products: Provide misleading information - Remote/unauthenticated 2018-07-31

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2018.2158.2
           K05112543: HTTPS monitor vulnerability CVE-2018-5542
                               31 July 2018

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

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

Product:           F5 BIG-IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
                   Access Confidential Data       -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5542  

Original Bulletin: 
   https://support.f5.com/csp/article/K05112543

Revision History:  July 31 2018: Heuristic listed for BIG-IP iHealth
                   July 25 2018: Initial Release

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

K05112543: HTTPS monitor vulnerability CVE-2018-5542

Security Advisory

Original Publication Date: Jul 25, 2018
Updated Date: Jul 31, 2018

Applies to (see versions):

  o Product: BIG-IQ, BIG-IQ Centralized Management
      - 6.0.0, 5.4.0, 5.3.0, 5.2.0, 5.1.0, 5.0.0, 4.6.0
  o Product: BIG-IP, BIG-IP AAM, BIG-IP AFM, BIG-IP Analytics, BIG-IP APM,
    BIG-IP ASM, BIG-IP DNS, BIG-IP Edge Gateway, BIG-IP FPS, BIG-IP GTM, BIG-IP
    Link Controller, BIG-IP LTM, BIG-IP PEM, BIG-IP WebAccelerator
      - 13.1.0, 13.0.1, 13.0.0, 12.1.3, 12.1.2, 12.1.1, 12.1.0, 11.6.3, 11.6.2,
        11.6.1, 11.5.7, 11.5.6, 11.5.5, 11.5.4, 11.5.3, 11.5.2, 11.5.1, 11.2.1
  o Product: Enterprise Manager
      - 3.1.1
  o Product: F5 iWorkflow
      - 2.3.0, 2.2.0, 2.1.0
  o Product: ARX, ARX
      - 6.4.0, 6.3.0, 6.2.0
  o Product: Traffix SDC
      - 5.1.0, 4.4.0
  o Product: BIG-IQ Cloud and Orchestration
      - 1.0.0

Security Advisory Description

BIG-IP HTTPS health monitors do not validate the identity of the monitored
server. (CVE-2018-5542)

Impact

This vulnerability may allow unauthorized disclosure and modification of
monitor traffic by an attacker with a privileged network position (MITM).

Note: This vulnerability affects HTTPS monitors that are configured on Traffic
Management Microkernel (TMM) interfaces and monitors that are configured on the
management interface (MGMT).

Security Advisory Status

F5 Product Development has assigned ID 403211 (BIG-IP) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H05112543 on the Diagnostics >
Identified > Low 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|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|BIG-IP (LTM, AAM,  |13.x  |13.0.0 -  |13.1.0^2  |          |      |          |
|AFM, Analytics,    |      |13.0.1    |          |          |      |          |
|APM, ASM, DNS, Edge+------+----------+----------+          |      |          |
|Gateway, FPS, GTM, |12.x  |12.1.0 -  |None      |Low       |3.7   |HTTPS     |
|Link Controller,   |      |12.1.3    |          |          |      |monitors  |
|PEM,               +------+----------+----------+          |      |          |
|WebAccelerator)    |11.x  |11.2.1 -  |None      |          |      |          |
|                   |      |11.6.3    |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|ARX                |6.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|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 fix requires upgrading to BIG-IP 13.1.0 or later and configuring the
In-TMM monitoring feature for the HTTPS monitors. For more information, refer
to the Security Advisory Recommended Actions section.

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 and performing the tasks in the Mitigation
section.

Mitigation

To completely mitigate this vulnerability, you must upgrade to BIG-IP 13.1.0 or
later and perform all of the following tasks:

  o Ensure that your HTTPS health monitors are configured to use a TMM
    interface and not the management interface.

    Note: The In-TMM monitoring feature is not available for monitors using the
    MGMT interface.

  o Configure the In-TMM monitoring feature.

    Note: The In-TMM monitoring feature is only available in version 13.1.0 and
    later.

      - For information about enabling In-TMM monitoring, refer to K11323537:
        Configuring In-TMM monitoring.
  o Configure a Server SSL profile with server authentication.
      - For information about Server SSL profiles and server authentication,
        refer to K14806: Overview of the Server SSL profile (11.x - 13.x).
  o Associate the Server SSL profile with the HTTPS monitor.

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 K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
    systems (11.4.x and later)
  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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