ESB-2018.0020 - [Appliance] F5 BIG-IP Products: Root compromise - Existing account 2018-01-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0020
          K51931024: Linux kernel vulnerability CVE-2017-1000364
                              2 January 2018

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-1000364  

Reference:         ESB-2017.1541
                   ESB-2017.1521

Original Bulletin: 
   https://support.f5.com/csp/article/K51931024

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K51931024: Linux kernel vulnerability CVE-2017-1000364

Security Advisory

Security Advisory Description

An issue was discovered in the size of the stack guard page on Linux,
specifically a 4k stack guard page is not sufficiently large and can be
"jumped" over (the stack guard page is bypassed), this affects Linux Kernel
versions 4.11.5 and earlier (the stackguard page was introduced in 2010). (
CVE-2017-1000364)

Impact

This vulnerability allows unauthorized disclosure of information, unauthorized
modification, and disruption of service.

Security Advisory Status

F5 Product Development has assigned IDs 670376 and 670393 (BIG-IP), ID 670786
(BIG-IQ), ID 670782 (Enterprise Manager), and IDs CPF-24100, CPF-24101, and
CPF-24102 (Traffix) to this vulnerability. Additionally, BIG-IP iHealth may
list Heuristic H51931024 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          |                 |          |                |
|BIG-IP LTM     |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP AAM     |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP AFM     |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP         |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|Analytics      |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP APM     |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP ASM     |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP DNS     |13.0.0          |13.1.0           |High      |Linux kernel    |
|               |12.0.0 - 12.1.2 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge    |11.2.1          |None             |High      |Linux kernel    |
|Gateway        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP GTM     |11.4.0 - 11.6.1 |None             |High      |Linux kernel    |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP Link    |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|Controller     |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP PEM     |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM     |11.4.0 - 11.4.1 |None             |High      |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP         |11.2.1          |None             |High      |Linux kernel    |
|WebAccelerator |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP WebSafe |12.0.0 - 12.1.2 |13.1.0           |High      |Linux kernel    |
|               |11.6.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|ARX            |None            |6.2.0 - 6.4.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise     |3.1.1           |None             |High      |Linux kernel    |
|Manager        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |4.4.0 - 4.5.0   |None             |High      |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device  |4.4.0 - 4.5.0   |None             |High      |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.4.0 - 4.5.0   |None             |High      |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC     |4.5.0           |None             |High      |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ         |5.0.0 - 5.2.0   |                 |          |                |
|Centralized    |4.6.0           |None             |High      |Linux kernel    |
|Management     |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |                |                 |          |                |
|and            |1.0.0           |None             |High      |Linux kernel    |
|Orchestration  |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow   |2.0.0 - 2.2.0   |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|LineRate       |None            |2.5.0 - 2.6.2    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC    |5.0.0 - 5.1.0   |None             |Critical  |Linux kernel    |
|               |4.0.0 - 4.4.0   |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+

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

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