ESB-2017.2675 - [Appliance] F5 BIG-IP products: Unauthorised access - Existing account 2017-10-24

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2675
           K22317030: iControl REST vulnerability CVE-2017-6145
                              24 October 2017

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

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

Product:           F5 BIG-IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6145  

Original Bulletin: 
   https://support.f5.com/csp/article/K22317030

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K22317030: iControl REST vulnerability CVE-2017-6145

Security Advisory

Original Publication Date: Jul 13, 2017

Updated Date: Jul 19, 2017

Security Advisory Description

iControl REST includes a service to convert authorization BIGIPAuthCookie
cookies to X-F5-Auth-Token tokens. This service does not properly re-validate
cookies when making that conversion, allowing once-valid but now expired
cookies to be converted to valid tokens. (CVE-2017-6145)

Impact

An attacker with an expired BIG-IP authentication cookie can use it to get
valid iControl REST authentication tokens in order to gain access to the
iControl REST interface of the BIG-IP system.

Security Advisory Status

F5 Product Development has assigned ID 641445 (BIG-IP) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H22317030 on the Diagnostics >
Identified > High screen.

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 known  |Versions known to|          |Vulnerable      |
|Product        |to be vulnerable|be not vulnerable|Severity  |component or    |
|               |                |                 |          |feature         |
+---------------+----------------+-----------------+----------+----------------+
|               |                |13.0.0 HF1       |          |                |
|BIG-IP LTM     |13.0.0          |12.1.2 HF1       |High      |iControl REST   |
|               |12.0.0 - 12.1.2 |11.4.1 - 11.6.1  |          |                |
|               |                |11.2.1           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP AAM     |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|               |                |11.4.1 - 11.6.1  |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP AFM     |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|               |                |11.4.1 - 11.6.1  |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP         |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|Analytics      |                |11.4.1 - 11.6.1  |          |                |
|               |                |11.2.1           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP APM     |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|               |                |11.4.1 - 11.6.1  |          |                |
|               |                |11.2.1           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP ASM     |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|               |                |11.4.1 - 11.6.1  |          |                |
|               |                |11.2.1           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP DNS     |13.0.0          |13.0.0 HF1       |High      |iControl REST   |
|               |12.0.0 - 12.1.2 |12.1.2 HF1       |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge    |None            |11.2.1           |Not       |None            |
|Gateway        |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP GTM     |None            |11.4.1 - 11.6.1  |Not       |None            |
|               |                |11.2.1           |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|               |                |13.0.0 HF1       |          |                |
|BIG-IP Link    |13.0.0          |12.1.2 HF1       |High      |iControl REST   |
|Controller     |12.0.0 - 12.1.2 |11.4.1 - 11.6.1  |          |                |
|               |                |11.2.1           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP PEM     |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|               |                |11.4.1 - 11.6.1  |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM     |None            |11.4.1           |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP         |None            |11.2.1           |Not       |None            |
|WebAccelerator |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |13.0.0 HF1       |          |                |
|BIG-IP WebSafe |12.0.0 - 12.1.2 |12.1.2 HF1       |High      |iControl REST   |
|               |                |11.6.0 - 11.6.1  |          |                |
+---------------+----------------+-----------------+----------+----------------+
|ARX            |None            |6.2.0 - 6.4.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise     |None            |3.1.1            |Not       |None            |
|Manager        |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |None            |4.4.0 - 4.5.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device  |None            |4.4.0 - 4.5.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|None            |4.4.0 - 4.5.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC     |None            |4.5.0            |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ         |                |5.0.0 - 5.2.0    |Not       |                |
|Centralized    |None            |4.6.0            |vulnerable|None            |
|Management     |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |                |                 |Not       |                |
|and            |None            |1.0.0            |vulnerable|None            |
|Orchestration  |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow   |None            |2.0.0 - 2.2.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|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|                |
+---------------+----------------+-----------------+----------+----------------+

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.

To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems.

Mitigation

To mitigate this vulnerability, you should permit management access to F5
products only over a secure network and restrict command line access for
affected systems to trusted users. For more information, refer to K13309:
Restricting access to the Configuration utility by source IP address (11.x -
13.x) and K13092: Overview of securing access to the BIG-IP system.

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
  o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
  o K9502: BIG-IP hotfix matrix

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