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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0937
                 BIG-IP SNMPD vulnerability CVE-2019-6608
                               22 March 2019

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

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

Product:           F5 BIG-IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6608  

Original Bulletin: 
   https://support.f5.com/csp/article/K12139752

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K12139752:BIG-IP SNMPD vulnerability CVE-2019-6608

Security Advisory

Original Publication Date: 22 Mar, 2019

Security Advisory Description

Under certain conditions, the snmpd process may leak memory on a multi-blade
BIG-IP Virtual Clustered Multiprocessing (vCMP) guest when processing
authorized SNMP requests. (CVE-2019-6608)

Impact

Over time, the snmpd process consumes excessive memory, forcing the BIG-IP
system to slow down and eventually fail over.

Security Advisory Status

F5 Product Development has assigned ID 738887 (BIG-IP) 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|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |14.x  |14.0.0    |14.1.0    |          |      |          |
|                   |      |          |14.0.0.3  |          |      |          |
|BIG-IP (LTM, AAM,  +------+----------+----------+          |      |          |
|AFM, Analytics,    |13.x  |13.0.0 -  |13.1.1.2  |          |      |          |
|APM, ASM, DNS, Edge|      |13.1.1    |          |          |      |          |
|Gateway, FPS, GTM, +------+----------+----------+Low       |3.1   |SNMP      |
|Link Controller,   |12.x  |12.1.0 -  |12.1.4    |          |      |          |
|PEM,               |      |12.1.3    |          |          |      |          |
|WebAccelerator)    +------+----------+----------+          |      |          |
|                   |11.x  |11.2.1 -  |11.6.4    |          |      |          |
|                   |      |11.6.3    |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|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   |None      |Not       |          |      |          |
|                   |      |          |applicable|Not       |      |          |
|Traffix SDC        +------+----------+----------+vulnerable|None  |None      |
|                   |4.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
+-------------------+------+----------+----------+----------+------+----------+

^1The 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

If the snmpd process consumes excessive memory, you can restart it by
performing the following procedure:

 1. Log in to the BIG-IP system as the root user.
 2. Type the following command:

    bigstart restart snmpd

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 K9502: BIG-IP hotfix and point release matrix
  o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
  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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