ESB-2017.2789 - [Appliance] F5 Products: Multiple vulnerabilities 2017-11-02

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

                               ESB-2017.2789
             F5 Security Advisory Linux kernel vulnerabilities
                      (CVE-2016-10088, CVE-2016-6136)
                              2 November 2017

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

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

Product:           F5 Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Root Compromise          -- Existing Account
                   Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Mitigation
CVE Names:         CVE-2016-10088 CVE-2016-6136 

Reference:         ASB-2016.0103
                   ESB-2017.0507
                   ESB-2016.2687
                   ESB-2016.2602
                   ESB-2016.2592
                   ESB-2016.2086

Original Bulletin: 
   https://support.f5.com/csp/article/K54610514
   https://support.f5.com/csp/article/K90803619

Comment: This bulletin contains two (2) F5 Networks security advisories.

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

K54610514: Linux kernel vulnerability CVE-2016-10088

Security Advisory

Original Publication Date: Jan 28, 2017
Updated Date: Nov 01, 2017

Applies to (see versions):

  o Product: BIG-IQ, BIG-IQ Cloud, BIG-IQ Device, BIG-IQ Security, BIG-IQ ADC,
    BIG-IQ Centralized Management
      5.3.0, 5.2.0, 5.1.0, 5.0.0, 4.6.0, 4.5.0, 4.4.0, 4.3.0, 4.2.0, 4.1.0,
      4.0.0
  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 GTM, BIG-IP Link
    Controller, BIG-IP LTM, BIG-IP PEM, BIG-IP PSM, BIG-IP WebAccelerator
      13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.2, 11.6.1, 11.6.0, 11.5.5,
      11.5.4, 11.5.3, 11.5.2, 11.5.1, 11.5.0, 11.4.1, 11.4.0, 11.2.1
  o Product: Enterprise Manager
      3.1.1
  o Product: F5 iWorkflow
      2.3.0, 2.2.0, 2.1.0, 2.0.2, 2.0.1, 2.0.0
  o Product: LineRate
      2.6.1, 2.6.0, 2.5.2, 2.5.1, 2.5.0
  o Product: ARX, ARX
      6.4.0, 6.3.0, 6.2.0
  o Product: F5 WebSafe
      1.0.0
  o Product: Traffix SDC
      5.1.0, 4.4.0, 4.0.5, 4.0.2, 4.0.0
  o Product: BIG-IQ Cloud and Orchestration
      1.0.0

Security Advisory Description

The sg implementation in the Linux kernel through 4.9 does not properly
restrict write operations in situations where the KERNEL_DS option is set,
which allows local users to read or write to arbitrary kernel memory locations
or cause a denial of service (use-after-free) by leveraging access to a /dev/sg
device, related to block/bsg.c and drivers/scsi/sg.c. NOTE: this vulnerability
exists because of an incomplete fix for CVE-2016-9576. (CVE-2016-10088)

Impact

This vulnerability may allow locally authenticated users to read or write to
arbitrary kernel memory locations or cause a denial of service (DoS).

Note: The exploit requires local shell access and can provide a user with root
access to the system. On BIG-IP systems, shell access includes root privileges,
making this exploit unnecessary.

Security Advisory Status

F5 Product Development has assigned ID 640766 and ID 640768 (BIG-IP), and ID
640766 and ID 640768 (BIG-IQ, Enterprise Manager, iWorkflow) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H54610514 on the
Diagnostics > Identified > Low 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 |11.6.2           |Low       |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP AAM     |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP AFM     |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP         |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|Analytics      |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP APM     |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP ASM     |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP DNS     |13.0.0          |None             |Low       |Linux kernel    |
|               |12.0.0 - 12.1.2 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge    |11.2.1          |None             |Low       |Linux kernel    |
|Gateway        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP GTM     |11.4.0 - 11.6.1 |11.6.2           |Low       |Linux kernel    |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP Link    |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|Controller     |11.4.0 - 11.6.1 |                 |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP PEM     |12.0.0 - 12.1.2 |11.6.2           |Low       |Linux kernel    |
|               |11.4.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM     |11.4.0 - 11.4.1 |None             |Low       |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP         |11.2.1          |None             |Low       |Linux kernel    |
|WebAccelerator |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |Low       |                |
|BIG-IP WebSafe |12.0.0 - 12.1.2 |11.6.2           |          |Linux kernel    |
|               |11.6.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|ARX            |None            |6.2.0 - 6.4.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise     |3.1.1           |None             |Low       |Linux kernel    |
|Manager        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |4.0.0 - 4.5.0   |None             |Low       |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device  |4.2.0 - 4.5.0   |None             |Low       |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0   |None             |Low       |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC     |4.5.0           |None             |Low       |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ         |5.0.0 - 5.3.0   |                 |          |                |
|Centralized    |4.6.0           |None             |Low       |Linux kernel    |
|Management     |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |                |                 |          |                |
|and            |1.0.0           |None             |Low       |Linux kernel    |
|Orchestration  |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow   |2.0.0 - 2.3.0   |None             |Low       |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|LineRate       |None            |3.0.0 - 3.1.1    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC    |None            |5.0.0 - 5.1.0    |Not       |None            |
|               |                |4.0.0 - 4.4.0    |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+

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

None

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
  o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
  o K9502: BIG-IP hotfix matrix
  o K15106: Managing BIG-IQ product hotfixes
  o K15113: BIG-IQ hotfix matrix


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

K90803619: Linux kernel vulnerability CVE-2016-6136

Security Advisory

Original Publication Date: Mar 28, 2017
Updated Date: Nov 01, 2017

Applies to (see versions):

  o Product: BIG-IQ, BIG-IQ Cloud, BIG-IQ Device, BIG-IQ Security, BIG-IQ ADC,
    BIG-IQ Centralized Management
      5.3.0, 5.2.0, 5.1.0, 5.0.0, 4.6.0, 4.5.0, 4.4.0, 4.3.0, 4.2.0, 4.1.0,
      4.0.0
  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 GTM, BIG-IP Link
    Controller, BIG-IP LTM, BIG-IP PEM, BIG-IP PSM, BIG-IP WebAccelerator
      13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.2, 11.6.1, 11.6.0, 11.5.5,
      11.5.4, 11.5.3, 11.5.2, 11.5.1, 11.5.0, 11.4.1, 11.4.0, 11.2.1
  o Product: Enterprise Manager
      3.1.1
  o Product: F5 iWorkflow
      2.3.0, 2.2.0, 2.1.0, 2.0.2, 2.0.1, 2.0.0
  o Product: LineRate
      2.6.2, 2.6.1, 2.6.0, 2.5.3, 2.5.2, 2.5.1, 2.5.0
  o Product: ARX, ARX
      6.4.0, 6.3.0, 6.2.0
  o Product: F5 WebSafe
      1.0.0
  o Product: Traffix SDC
      5.1.0, 4.4.0, 4.0.5, 4.0.2, 4.0.0
  o Product: BIG-IQ Cloud and Orchestration
      1.0.0

Security Advisory Description

Race condition in the audit_log_single_execve_arg function in kernel/auditsc.c
in the Linux kernel through 4.7 allows local users to bypass intended
character-set restrictions or disrupt system-call auditing by changing a
certain string, aka a "double fetch" vulnerability. (CVE-2016-6136)

Impact

Locally authenticated users may be able to bypass audit restrictions resulting
in the disclosure of local information. 

Security Advisory Status

F5 Product Development has assigned IDs 648879 and 653065 (BIG-IP), ID 652525 
(BIG-IQ), ID 652524 (Enterprise Manager), and ID 456789 (ARX) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H90803619 on the
Diagnostics > Identified > Medium 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          |                 |          |                |
|               |12.0.0 - 12.1.2 |12.1.2 HF1       |          |                |
|BIG-IP LTM     |11.6.0 - 11.6.1 |11.6.2           |Medium    |Linux kernel    |
|               |11.4.0 - 11.5.4 |11.5.5           |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |12.1.2 HF1       |          |                |
|BIG-IP AAM     |12.0.0 - 12.1.2 |11.6.2           |Medium    |Linux kernel    |
|               |11.6.0 - 11.6.1 |11.5.5           |          |                |
|               |11.4.0 - 11.5.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |12.1.2 HF1       |          |                |
|BIG-IP AFM     |12.0.0 - 12.1.2 |11.6.2           |Medium    |Linux kernel    |
|               |11.6.0 - 11.6.1 |11.5.5           |          |                |
|               |11.4.0 - 11.5.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP         |12.0.0 - 12.1.2 |12.1.2 HF1       |          |                |
|Analytics      |11.6.0 - 11.6.1 |11.6.2           |Medium    |Linux kernel    |
|               |11.4.0 - 11.5.4 |11.5.5           |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|               |12.0.0 - 12.1.2 |12.1.2 HF1       |          |                |
|BIG-IP APM     |11.6.0 - 11.6.1 |11.6.2           |Medium    |Linux kernel    |
|               |11.4.0 - 11.5.4 |11.5.5           |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|               |12.0.0 - 12.1.2 |12.1.2 HF1       |          |                |
|BIG-IP ASM     |11.6.0 - 11.6.1 |11.6.2           |Medium    |Linux kernel    |
|               |11.4.0 - 11.5.4 |11.5.5           |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP DNS     |13.0.0          |12.1.2 HF1       |Medium    |Linux kernel    |
|               |12.0.0 - 12.1.2 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge    |11.2.1          |None             |Medium    |Linux kernel    |
|Gateway        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |11.6.2           |          |                |
|BIG-IP GTM     |11.4.0 - 11.5.4 |11.5.5           |Medium    |Linux kernel    |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |                 |          |                |
|BIG-IP Link    |12.0.0 - 12.1.2 |12.1.2 HF1       |          |                |
|Controller     |11.6.0 - 11.6.1 |11.6.2           |Medium    |Linux kernel    |
|               |11.4.0 - 11.5.4 |11.5.5           |          |                |
|               |11.2.1          |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |12.1.2 HF1       |          |                |
|BIG-IP PEM     |12.0.0 - 12.1.2 |11.6.2           |Medium    |Linux kernel    |
|               |11.6.0 - 11.6.1 |11.5.5           |          |                |
|               |11.4.0 - 11.5.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM     |11.4.0 - 11.4.1 |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP         |11.2.1          |None             |Medium    |Linux kernel    |
|WebAccelerator |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |13.0.0          |12.1.2 HF1       |          |                |
|BIG-IP WebSafe |12.0.0 - 12.1.2 |11.6.2           |Medium    |Linux kernel    |
|               |11.6.0 - 11.6.1 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|ARX            |None            |6.2.0 - 6.4.0    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise     |3.1.1           |None             |Medium    |Linux kernel    |
|Manager        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |4.0.0 - 4.5.0   |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device  |4.2.0 - 4.5.0   |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0   |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC     |4.5.0           |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ         |5.0.0 - 5.3.0   |                 |          |                |
|Centralized    |4.6.0           |None             |Medium    |Linux kernel    |
|Management     |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |                |                 |          |                |
|and            |1.0.0           |None             |Medium    |Linux kernel    |
|Orchestration  |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow   |2.0.0 - 2.3.0   |None             |Medium    |Linux kernel    |
+---------------+----------------+-----------------+----------+----------------+
|LineRate       |None            |2.5.0 - 2.6.2    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC    |5.0.0 - 5.1.0   |None             |Medium    |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 limit shell access to only 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
  o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
  o K9502: BIG-IP hotfix matrix
  o K15106: Managing BIG-IQ product hotfixes
  o K15113: BIG-IQ hotfix matrix

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

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