ESB-2018.1170 - [Appliance] F5 products: Denial of service - Remote/unauthenticated 2018-04-17

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

                               ESB-2018.1170
                           OpenSSH vulnerability
                               17 April 2018

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

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

Product:           F5 products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-6515  

Reference:         ESB-2017.3124
                   ESB-2017.2695
                   ESB-2016.2453
                   ESB-2016.2946.2

Original Bulletin: 
   https://support.f5.com/csp/article/K31510510

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K31510510: OpenSSH vulnerability CVE-2016-6515

Security Advisory

  

Original Publication Date: Oct 20, 2016
Updated Date: Apr 17, 2018

Applies to (see versions):

  o Product: BIG-IQ, BIG-IQ Cloud, BIG-IQ Device, BIG-IQ Security, BIG-IQ ADC,
    BIG-IQ Centralized Management
      - 5.1.0, 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,
    BIG-IP WOM
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o Product: Enterprise Manager
      - 3.1.1
  o Product: F5 iWorkflow
      - 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
      - 4.4.0, 4.1.0, 4.0.5, 4.0.2, 4.0.0
  o Product: Legacy Products, FirePass
      - 7.0.0
  o Product: BIG-IQ Cloud and Orchestration
      - 1.0.0

Security Advisory Description

The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does
not limit password lengths for password authentication, which allows remote
attackers to cause a denial of service (crypt CPU consumption) via a long
string. (CVE-2016-6515)

Impact

This vulnerability allows an attacker to disrupt service.

Security Advisory Status

F5 Product Development has assigned ID 612128 (BIG-IP), ID 612277 (BIG-IQ and
F5 iWorkflow), ID 612278 (Enterprise Manager), and ID 431179 (ARX) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H622113 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         |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |13.0.0           |          |                |
|BIG-IP LTM     |11.4.0 - 11.5.5 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |11.2.1          |11.6.1 HF2       |          |                |
|               |10.2.1 - 10.2.4 |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |                |13.0.0           |          |                |
|BIG-IP AAM     |11.6.0 - 11.6.1 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |11.4.0 - 11.5.5 |11.6.1 HF2       |          |                |
|               |                |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |                |13.0.0           |          |                |
|BIG-IP AFM     |11.6.0 - 11.6.1 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |11.4.0 - 11.5.5 |11.6.1 HF2       |          |                |
|               |                |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |13.0.0           |          |                |
|BIG-IP         |11.4.0 - 11.5.5 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|Analytics      |11.2.1          |11.6.1 HF2       |          |                |
|               |                |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |13.0.0           |          |                |
|BIG-IP APM     |11.4.0 - 11.5.5 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |11.2.1          |11.6.1 HF2       |          |                |
|               |10.2.1 - 10.2.4 |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |13.0.0           |          |                |
|BIG-IP ASM     |11.4.0 - 11.5.5 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |11.2.1          |11.6.1 HF2       |          |                |
|               |10.2.1 - 10.2.4 |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP DNS     |None            |13.0.0           |Not       |None            |
|               |                |12.0.0 - 12.1.2  |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge    |11.2.1          |None             |High      |OpenSSH         |
|Gateway        |10.2.1 - 10.2.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |                 |          |                |
|BIG-IP GTM     |11.4.0 - 11.5.5 |11.6.1 HF2       |High      |OpenSSH         |
|               |11.2.1          |11.5.6           |          |                |
|               |10.2.1 - 10.2.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |11.6.0 - 11.6.1 |13.0.0           |          |                |
|BIG-IP Link    |11.4.0 - 11.5.5 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|Controller     |11.2.1          |11.6.1 HF2       |          |                |
|               |10.2.1 - 10.2.4 |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |                |13.0.0           |          |                |
|BIG-IP PEM     |11.6.0 - 11.6.1 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |11.4.0 - 11.5.5 |11.6.1 HF2       |          |                |
|               |                |11.5.6           |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM     |11.4.0 - 11.4.1 |None             |High      |OpenSSH         |
|               |10.2.1 - 10.2.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP         |11.2.1          |None             |High      |OpenSSH         |
|WebAccelerator |10.2.1 - 10.2.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP WOM     |11.2.1          |None             |High      |OpenSSH         |
|               |10.2.1 - 10.2.4 |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|               |                |13.0.0           |          |                |
|BIG-IP WebSafe |11.6.0 - 11.6.1 |12.0.0 - 12.1.2  |High      |OpenSSH         |
|               |                |11.6.1 HF2       |          |                |
+---------------+----------------+-----------------+----------+----------------+
|ARX            |6.2.0 - 6.4.0   |None             |High      |OpenSSH         |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise     |3.1.1           |3.1.1 HF8        |High      |OpenSSH         |
|Manager        |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|FirePass       |None            |7.0.0            |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |4.0.0 - 4.5.0   |None             |High      |OpenSSH         |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device  |4.2.0 - 4.5.0   |None             |High      |OpenSSH         |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0   |None             |High      |OpenSSH         |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC     |4.5.0           |None             |High      |OpenSSH         |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ         |5.0.0           |                 |          |                |
|Centralized    |4.6.0           |5.1.0            |High      |OpenSSH         |
|Management     |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud   |                |                 |          |                |
|and            |1.0.0           |None             |High      |OpenSSH         |
|Orchestration  |                |                 |          |                |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow   |2.0.0 - 2.0.1   |2.0.2            |High      |OpenSSH         |
+---------------+----------------+-----------------+----------+----------------+
|LineRate       |None            |2.5.0 - 2.6.1    |Not       |None            |
|               |                |                 |vulnerable|                |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC    |None            |5.0.0            |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

To mitigate this vulnerability for BIG-IP systems, you can limit the allowable
IP address ranges for secure shell (SSH) access. To do so, refer to K5380:
Specifying allowable IP ranges for SSH access.

Impact of action: Before performing this action, ensure that the IP address
used to access the BIG-IP system from SSH is included in the allowable IP
address range. If the IP address is not included in the allowable IP address
range, you will lose 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 K4918: Overview of the F5 critical issue hotfix policy
  o K4602: Overview of the F5 security vulnerability response 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 K13092: Overview of securing access to the BIG-IP system

Applies to (see versions):

  o ARX:
      - 6.4.0, 6.3.0, 6.2.0
  o BIG-IP AAM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP AFM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP APM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP ASM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP Analytics:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP DNS:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP Edge Gateway:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP GTM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP LTM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP Link Controller:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP PEM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP PSM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP WOM:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IP WebAccelerator:
      - 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.6, 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, 10.2.4,
        10.2.3, 10.2.2, 10.2.1
  o BIG-IQ ADC:
      - 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 BIG-IQ Centralized Management:
      - 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 BIG-IQ Cloud:
      - 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 BIG-IQ Cloud and Orchestration:
      - 1.0.0
  o BIG-IQ Device:
      - 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 BIG-IQ Security:
      - 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 Enterprise Manager:
      - 3.1.1
  o F5 WebSafe:
      - 1.0.0
  o F5 iWorkflow:
      - 2.0.0, 2.0.1, 2.0.2
  o FirePass:
      - 7.0.0
  o LineRate:
      - 2.6.0, 2.5.1, 2.6.1, 2.5.2, 2.5.0
  o Traffix SDC:
      - 4.0.2, 4.0.0, 4.1.0, 4.4.0, 4.0.5

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