ESB-2018.2230 - [Appliance] F5 Traffix SDC: Denial of service - Existing account 2018-08-01

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

                               ESB-2018.2230
           A vulnerability has been identified in F5 Traffix SDC
                               1 August 2018

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

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

Product:           F5 Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Existing Account
Resolution:        None
CVE Names:         CVE-2016-8650  

Reference:         ESB-2018.1797
                   ASB-2017.0020
                   ESB-2017.2364
                   ESB-2017.0950
                   ESB-2017.0949
                   ESB-2017.0948
                   ESB-2017.0594

Original Bulletin: 
   https://support.f5.com/csp/article/K46394694

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K46394694: Linux kernel vulnerability CVE-2016-8650

Security Advisory

Original Publication Date: Aug 01, 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

The mpi_powm function in lib/mpi/mpi-pow.c in the Linux kernel through 4.8.11
does not ensure that memory is allocated for limb data, which allows local
users to cause a denial of service (stack memory corruption and panic) via an
add_key system call for an RSA key with a zero exponent. (CVE-2016-8650)

Impact

Traffix SDC

A local attacker can exploit this issue to cause a denial of service (DoS)
on the affected system.

ARX, BIG-IP, BIG-IQ, iWorkflow, and Enterprise Manager

There is no impact; these products are not affected by this vulnerability.

Security Advisory Status

F5 Product Development has assigned CPF-24929 and CPF-24930 (Traffix SDC) 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. 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  |None      |Not       |          |      |          |
|AFM, Analytics,    |      |          |applicable|          |      |          |
|APM, ASM, DNS, Edge+------+----------+----------+          |      |          |
|Gateway, FPS, GTM, |12.x  |None      |Not       |Not       |None  |None      |
|Link Controller,   |      |          |applicable|vulnerable|      |          |
|PEM,               +------+----------+----------+          |      |          |
|WebAccelerator)    |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|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |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   |5.0.0 -   |None      |          |      |          |
|Traffix SDC        |      |5.1.0     |          |High      |8.8   |Linux     |
|                   +------+----------+----------+          |      |kernel    |
|                   |4.x   |4.4.0     |None      |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+

^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

None

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 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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