ESB-2017.3254 - [Appliance][Virtual] F5 BIG-IP APM: Denial of service - Remote/unauthenticated 2017-12-21

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

                               ESB-2017.3254
           K20087443: BIG-IP APM VPN vulnerability CVE-2017-6129
                             21 December 2017

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

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

Product:           F5 BIG-IP APM
Publisher:         F5 Networks
Operating System:  Network Appliance
                   Virtualisation
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6129  

Original Bulletin: 
   https://support.f5.com/csp/article/K20087443

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

K20087443: BIG-IP APM VPN vulnerability CVE-2017-6129

Security Advisory

Original Publication Date: Dec 21, 2017

Security Advisory Description

In some circumstances, APM tunneled VPN flows can cause a VPN/PPP connflow to
be prematurely freed or cause TMM to stop responding with a "flow not in use"
assertion. An attacker may be able to disrupt traffic or cause the BIG-IP
system to fail over to another device in the device group. (CVE-2017-6129)

Impact

An attacker may be able to disrupt traffic or cause the BIG-IP system to fail
over to another device in the device group.

Note: BIG-IP and BIG-IP Virtual Edition (VE) systems that are licensed with the
BIG-IP LTM module include a free perpetual license for the BIG-IP APM Lite
module. The BIG-IP LTM module is not affected by this vulnerability; however,
BIG-IP LTM systems provisioned with the BIG-IP APM Lite module may be
vulnerable. For more information about the BIG-IP APM Lite perpetual license,
refer to K15854: BIG-IP APM Lite.

Security Advisory Status

F5 Product Development has assigned ID 650059 (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    |          |      |          |
|                   |------+----------+----------|          |      |Network   |
|BIG-IP (APM)       |12.x  |12.1.2    |12.1.3    |High      |7.5   |Access    |
|                   |------+----------+----------|          |      |(VPN)     |
|                   |11.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|BIG-IP (LTM, AAM,  |13.x  |None      |Not       |          |      |          |
|AFM, Analytics,    |      |          |applicable|          |      |          |
|ASM, DNS, Edge     |------+----------+----------|          |      |          |
|Gateway, GTM, Link |12.x  |None      |Not       |Not       |None  |None      |
|Controller, PEM,   |      |          |applicable|vulnerable|      |          |
|WebAccelerator,    |------+----------+----------|          |      |          |
|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

None

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