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01 November 2019

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             AUSCERT External Security Bulletin Redistribution

                BIG-IP TMUI XSS vulnerability CVE-2019-6657
                              1 November 2019


        AusCERT Security Bulletin Summary

Product:           F5 -BIG-IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6657  

Original Bulletin: 

Revision History:  November 1 2019: Fixes updated
                   November 1 2019: Initial Release

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K22441651: BIG-IP TMUI XSS vulnerability CVE-2019-6657

Security Advisory

Original Publication Date: Nov 01, 2019

Security Advisory Description

A reflected cross-site scripting (XSS) vulnerability exists in an undisclosed
page of the BIG-IP Traffic Management User Interface (TMUI), also known as the
BIG-IP Configuration utility. (CVE-2019-6657)


An attacker may exploit this vulnerability using a crafted URL to a reflected
cross-site scripting (XSS) in an undisclosed page of security TMUI pages.

Security Advisory Status

F5 Product Development has assigned ID 805837 (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 or |
|                |      |be        |in        |          |1     |feature      |
|                |      |vulnerable|          |          |      |             |
|                |15.x  |None      |Not       |          |      |             |
|                |      |          |applicable|          |      |             |
|BIG-IP (LTM,    +------+----------+----------+          |      |             |
|AAM, AFM,       |14.x  |None      |14.0.0    |          |      |             |
|Analytics, APM, +------+----------+----------+          |      |             |
|ASM, DNS, Edge  |13.x  |13.1.0 -  |None      |          |      |TMUI/        |
|Gateway, FPS,   |      |13.1.3    |          |High      |7.5   |Configuration|
|GTM, Link       +------+----------+----------+          |      |utility      |
|Controller, PEM,|12.x  |12.1.0 -  |None      |          |      |             |
|WebAccelerator) |      |12.1.5    |          |          |      |             |
|                +------+----------+----------+          |      |             |
|                |11.x  |11.5.2  - |None      |          |      |             |
|                |      |11.6.5    |          |          |      |             |
|Enterprise      |3.x   |None      |Not       |Not       |None  |None         |
|Manager         |      |          |applicable|vulnerable|      |             |
|                |6.x   |None      |Not       |          |      |             |
|BIG-IQ          |      |          |applicable|Not       |      |             |
|Centralized     +------+----------+----------+vulnerable|None  |None         |
|Management      |5.x   |None      |Not       |          |      |             |
|                |      |          |applicable|          |      |             |
|F5 iWorkflow    |2.x   |None      |Not       |Not       |None  |None         |
|                |      |          |applicable|vulnerable|      |             |
|Traffix SDC     |5.x   |None      |Not       |Not       |None  |None         |
|                |      |          |applicable|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.


To mitigate this vulnerability, you should permit only authorized physical
access to F5 products. Additionally, you should permit management access to F5
products only over a secure network, and limit access to only trusted users.
For more information about securing access to BIG-IP and Enterprise Manager
systems, refer to K13309: Restricting access to the Configuration utility by
source IP address (11.x - 15.x) and K13092: Overview of securing access to the
BIG-IP system.

The trusted users with access to the Configuration utility should take
precaution when clicking hyperlinks from untrusted or unknown sources. The
attack for this vulnerability is most likely to come in the form of a phishing


F5 would like to acknowledge The Tarantula Team, VinCSS (a member of Vingroup)
for bringing this issue to our attention.

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 - 15.x)
  o K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
    systems (11.4.x and later)
  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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