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             AUSCERT External Security Bulletin Redistribution

        The BIG-IP DNS system may erroneously display the TSIG key
                         secret in plain text form
                             20 December 2019


        AusCERT Security Bulletin Summary

Product:           BIG-IP DNS
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Patch/Upgrade

Original Bulletin: 

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

K36328238:The BIG-IP DNS system may erroneously display the TSIG key secret in plain text form

Security Advisory

Original Publication Date: 20 Dec, 2019

Security Advisory Description

The BIG-IP DNS system may erroneously display the Transaction Signature (TSIG)
key secret in plain text form.

This issue occurs when all of the following conditions are met:

  o You configured a TSIG key in the BIG-IP DNS system.
  o You used one of the following methods to view the TSIG key configuration:
       The TMOS Shell (tmsh) utility
       The /config/bigip.conf file


A user who can access the system with the command line or tmsh can view the
TSIG key secret in plain text.


As a result of this issue, you may encounter one or more of the following

  o You can view the TSIG key secret in plain text when you enter the following
    command in the tmsh utility:

    list /ltm dns tsig-key

  o You can view the TSIG key secret in plain text from the tsig-key
    configuration stanza in the /config/bigip.conf file.

Security Advisory Status

F5 Product Development has assigned ID 761032 to this issue. F5 has confirmed
that this issue exists in the products listed in the Applies to (see versions)
box, located in the upper-right corner of this article. For information about
releases, point releases, or hotfixes that resolve this issue, refer to the
following table.

|Type of fix       |Fixes introduced |Related articles                        |
|                  |in               |                                        |
|Release           |15.1.0           |K2200: Most recent versions of F5       |
|                  |                 |software                                |
|Point release/    |         |K9502: BIG-IP hotfix and point release  |
|hotfix            |         |matrix                                  |
|                  |         |                                        |

Security Advisory Recommended Actions



Supplemental Information

o K51812227: Understanding Security Advisory versioning
  o K41942608: Overview of AskF5 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
  o K03332436: The BIG-IP DNS Configuration utility may erroneously display the
    TSIG key secret in plain text form

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