ESB-2017.3255 - [Appliance][Virtual] F5 BIG-IP APM: Access confidential data - Remote/unauthenticated 2017-12-21

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

                               ESB-2017.3255
         VPN log data leak patched in BIG-IP Access Policy Manager
                             21 December 2017

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

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

Product:           F5 BIG-IP APM
Publisher:         F5 Networks
Operating System:  Network Appliance
                   Virtualisation
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6139  

Original Bulletin: 
   https://support.f5.com/csp/article/K45432295

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

K45432295: BIG-IP APM logging disclosure vulnerability CVE-2017-6139

Security Advisory

Original Publication Date: Dec 21, 2017

Security Advisory Description

Under rare conditions, the BIG-IP APM system appends log details when
responding to client requests. Details in the log file can vary; customers
running debug mode logging with BIG-IP APM are at highest risk. (CVE-2017-6139)

Impact

A vulnerable BIG-IP APM system may append sensitive logging information when
responding to client requests.

Security Advisory Status

F5 Product Development has assigned ID 645480 (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.

+-----------------------------------------------------------------------------+
|                   |      |Versions  |Fixes     |          |CVSSv3|Vulnerable|
|Product            |Branch|known to  |Introduced|Severity  |score^|component |
|                   |      |be        |In        |          |1     |or feature|
|                   |      |vulnerable|          |          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|                   |13.x  |13.0.0    |13.1.0    |          |      |          |
|                   |------+----------+----------|          |      |          |
|BIG-IP (APM)       |12.x  |12.1.2    |12.1.3    |Medium    |6.8   |BIG-IP APM|
|                   |------+----------+----------|          |      |logging   |
|                   |11.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|                   |13.x  |None      |Not       |          |      |          |
|BIG-IP (LTM, AAM,  |      |          |applicable|          |      |          |
|AFM, Analytics,    |------+----------+----------|          |      |          |
|ASM, DNS, GTM, Link|12.x  |None      |Not       |Not       |None  |None      |
|Controller, PEM,   |      |          |applicable|vulnerable|      |          |
|WebSafe)           |------+----------+----------|          |      |          |
|                   |11.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|ARX                |6.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
|-------------------+------+----------+----------+----------+------+----------|
|Enterprise Manager |3.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
|-------------------+------+----------+----------+----------+------+----------|
|BIG-IQ (Cloud,     |      |          |Not       |Not       |      |          |
|Device, Security,  |4.x   |None      |applicable|vulnerable|None  |None      |
|ADC)               |      |          |          |          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|                   |5.x   |None      |Not       |          |      |          |
|BIG-IQ Centralized |      |          |applicable|Not       |      |          |
|Management         |------+----------+----------|vulnerable|None  |None      |
|                   |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|      |          |
|-------------------+------+----------+----------+----------+------+----------|
|LineRate           |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|          |      |          |
+-----------------------------------------------------------------------------+

^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.

Note: For details about how Security Advisory articles are versioned, and what
versions are listed in the table, refer to K51812227: Understanding Security
Advisory versioning.

Mitigation

To temporarily mitigate this vulnerability, you can restart the apmd process.
To do so, perform the following procedure:

Impact of action: The BIG-IP APM system fails to process traffic while the apmd
 process restarts. The following procedure stops the BIG-IP APM system from
actively disclosing sensitive logging information. However, the procedure does
not prevent the vulnerability from occurring.

 1. Log in to the TMOS Shell (tmsh) by typing the following command:

    tmsh

 2. Restart the apmd process by typing the following command:

    restart /sys /service apmd

- --------------------------END INCLUDED TEXT--------------------

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