Operating System:

[Linux]

Published:

12 August 2019

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

                               ESB-2019.3055
         F5 Container Ingress Services vulnerability CVE-2019-6648
                              12 August 2019

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

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

Product:           F5 Container Ingress Services
Publisher:         F5 Networks
Operating System:  Linux variants
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6648  

Original Bulletin: 
   https://support.f5.com/csp/article/K74327432

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K74327432: F5 Container Ingress Services vulnerability CVE-2019-6648

Security Advisory

Original Publication Date: 09 Aug, 2019

Security Advisory Description

If DEBUG logging is enabled, F5 Container Ingress Services (CIS) for
Kubernetes and Red Hat OpenShift (k8s-bigip-ctlr) log files may contain BIG-IP
system secrets such as SSL Private Keys and Private key Passphrases as provided
as inputs by an AS3 Declaration. (CVE-2019-6648)

Impact

A local attacker with access to F5 Container Ingress Services logs
could retrieve the disclosed secrets and compromise the applications and
services protected by the disclosed keys and certificates.

Security Advisory Status

F5 Product Development has assigned CONTCNTR-694 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 known to be |                    |           |CVSSv3|Vulnerable|
|Product           |Branch            |vulnerable           |Fixes introduced in |Severity   |score^|component |
|                  |                  |                     |                    |           |1     |or feature|
+------------------+------------------+---------------------+--------------------+-----------+------+----------+
|F5 Container      |                  |                     |                    |           |      |Virtual   |
|Ingress Services  |                  |                     |                    |           |      |servers   |
|for               |k8s-bigip-ctlr:1.x|k8s-bigip-ctlr:1.9.0 |k8s-bigip-ctlr:1.9.1|Medium     |4.4   |and pool  |
|Kubernetes and Red|                  |                     |                    |           |      |members   |
|Hat OpenShift     |                  |                     |                    |           |      |          |
+------------------+------------------+---------------------+--------------------+-----------+------+----------+
|                  |15.x              |None                 |Not applicable      |           |      |          |
|BIG-IP (LTM, AAM, +------------------+---------------------+--------------------+           |      |          |
|AFM, Analytics,   |14.x              |None                 |Not applicable      |           |      |          |
|APM, ASM, DNS,    +------------------+---------------------+--------------------+Not        |      |          |
|Edge Gateway, FPS,|13.x              |None                 |Not applicable      |vulnerable |None  |None      |
|GTM, Link         +------------------+---------------------+--------------------+           |      |          |
|Controller, PEM,  |12.x              |None                 |Not applicable      |           |      |          |
|WebAccelerator)   +------------------+---------------------+--------------------+           |      |          |
|                  |11.x              |None                 |Not applicable      |           |      |          |
+------------------+------------------+---------------------+--------------------+-----------+------+----------+
|Enterprise Manager|3.x               |None                 |Not applicable      |Not        |None  |None      |
|                  |                  |                     |                    |vulnerable |      |          |
+------------------+------------------+---------------------+--------------------+-----------+------+----------+
|BIG-IQ Centralized|6.x               |None                 |Not applicable      |Not        |      |          |
|Management        +------------------+---------------------+--------------------+vulnerable |None  |None      |
|                  |5.x               |None                 |Not applicable      |           |      |          |
+------------------+------------------+---------------------+--------------------+-----------+------+----------+
|F5 iWorkflow      |2.x               |None                 |Not applicable      |Not        |None  |None      |
|                  |                  |                     |                    |vulnerable |      |          |
+------------------+------------------+---------------------+--------------------+-----------+------+----------+
|Traffix SDC       |5.x               |None                 |Not applicable      |Not        |None  |None      |
|                  |                  |                     |                    |vulnerable |      |          |
+------------------+------------------+---------------------+--------------------+-----------+------+----------+

^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

To mitigate this vulnerability, you can change the logging level from DEBUG to
INFO. To do so, perform the following procedure:

Impact of action: Performing the following procedure will reduce the verbosity
of your logs.

 1. Connect to your Kubernetes console and type the following command:

    kubectl -n kube-system edit deployment <k8s-bigip-ctlr-name>

 2. Modify the log level from DEBUG to INFO.

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