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AUSCERT External Security Bulletin Redistribution
ESB-2019.4743
The BIG-IP DNS system may erroneously display the TSIG key
secret in plain text form
20 December 2019
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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:
https://support.f5.com/csp/article/K36328238
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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
Impact
A user who can access the system with the command line or tmsh can view the
TSIG key secret in plain text.
Symptoms
As a result of this issue, you may encounter one or more of the following
symptoms:
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/ |14.1.2.3 |K9502: BIG-IP hotfix and point release |
|hotfix |14.0.1.1 |matrix |
| |13.1.3.2 | |
+------------------+-----------------+----------------------------------------+
Security Advisory Recommended Actions
Workaround
None
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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===========================================================================
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