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             AUSCERT External Security Bulletin Redistribution

                 Privilege escalation found in F5 products
                                3 July 2018


        AusCERT Security Bulletin Summary

Product:           F5 BIG-IP products
                   F5 Enterprise Manager
                   F5 BIG-IQ products
                   F5 iWorkflow
                   F5 Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Mitigation
CVE Names:         CVE-2017-6001  

Reference:         ESB-2018.1797

Original Bulletin: 

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K24578092: Linux kernel vulnerability CVE-2017-6001

Security Advisory

Original Publication Date: Jul 03, 2018

Security Advisory Description

Race condition in kernel/events/core.c in the Linux kernel before 4.9.7 allows
local users to gain privileges via a crafted application that makes concurrent
perf_event_open system calls for moving a software group into a hardware
context. NOTE: this vulnerability exists because of an incomplete fix for
CVE-2016-6786. (CVE-2017-6001)


An authenticated attacker may be able to gain an escalation of privileges
through a crafted application.

Security Advisory Status

F5 Product Development has assigned ID 726407 (BIG-IP), ID 726456 (BIG-IQ), ID
726454 (Enterprise Manager), and CPF-24921 and CPF-24922 (Traffix) to this

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        |          |      |or feature|
|                   |      |vulnerable|          |          |      |          |
|BIG-IP (LTM, AAM,  |13.x  |13.0.0 -  |None      |          |      |          |
|AFM, Analytics,    |      |13.1.0    |          |          |      |          |
|APM, ASM, DNS, Edge|------+----------+----------|          |      |          |
|Gateway, FPS, GTM, |12.x  |12.1.0 -  |None      |Medium    |6.4   |Linux     |
|Link Controller,   |      |12.1.3    |          |          |      |kernel    |
|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   |3.1.1     |None      |Medium    |6.4   |Linux     |
|                   |      |          |          |          |      |kernel    |
|                   |6.x   |6.0.0     |None      |          |      |          |
|                   |------+----------+----------|          |      |          |
|BIG-IQ Centralized |5.x   |5.0.0 -   |None      |Medium    |6.4   |Linux     |
|Management         |      |5.4.0     |          |          |      |kernel    |
|                   |------+----------+----------|          |      |          |
|                   |4.x   |4.6.0     |None      |          |      |          |
|BIG-IQ Cloud and   |1.x   |1.0.0     |None      |Medium    |6.4   |Linux     |
|Orchestration      |      |          |          |          |      |kernel    |
|F5 iWorkflow       |2.x   |2.1.0 -   |None      |Medium    |6.4   |Linux     |
|                   |      |2.3.0     |          |          |      |kernel    |
|                   |5.x   |5.0.0 -   |None      |          |      |          |
|Traffix SDC        |      |5.1.0     |          |High      |7.0   |Linux     |
|                   |------+----------+----------|          |      |kernel    |
|                   |4.x   |4.4.0     |None      |          |      |          |

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.


To mitigate this vulnerability for affected F5 products, you should permit
management access to F5 products only over a secure network and limit shell
access to only trusted users. For more information about securing access to
BIG-IP and Enterprise Manager systems, 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.

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