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             AUSCERT External Security Bulletin Redistribution

                Apache Tomcat vulnerability CVE-2021-25329
                               17 March 2021


        AusCERT Security Bulletin Summary

Product:           Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Reduced Security -- Existing Account
Resolution:        None
CVE Names:         CVE-2021-25329 CVE-2020-9494 CVE-2020-9484

Reference:         ASB-2020.0180

Original Bulletin: 

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K73648110: Apache Tomcat vulnerability CVE-2021-25329

Original Publication Date: 16 Mar, 2021

Security Advisory Description

The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to
10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a
configuration edge case that was highly unlikely to be used, the Tomcat
instance was still vulnerable to CVE-2020-9494. Note that both the previously
published prerequisites for CVE-2020-9484 and the previously published
mitigations for CVE-2020-9484 also apply to this issue. (CVE-2021-25329)


Traffix SDC

When the vulnerability is exploited, the data confidentiality, integrity, and
availability of the affected system may be compromised.


There is no impact; the BIG-IP, BIG-IQ, and F5OS products are not affected by
this vulnerability.

Security Advisory Status

F5 Product Development has assigned ID SDC-1030 (Traffix SDC) to this

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, point 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.

Note: After a fix is introduced for a vulnerable version, that fix applies to
all subsequent point releases for that version and no additional fixes for that
version will be listed in the table. For example, when a fix is introduced in, the fix applies to and all later point releases.

|             |      |Versions     |Fixes     |          |CVSSv3|Vulnerable   |
|Product      |Branch|known to be  |introduced|Severity  |score^|component or |
|             |      |vulnerable   |in        |          |1     |feature      |
|             |16.x  |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|             +------+-------------+----------+          |      |             |
|             |15.x  |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|             +------+-------------+----------+          |      |             |
|             |14.x  |None         |Not       |          |      |             |
|BIG-IP (all  |      |             |applicable|Not       |      |             |
|modules)     +------+-------------+----------+vulnerable|None  |None         |
|             |13.x  |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|             +------+-------------+----------+          |      |             |
|             |12.x  |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|             +------+-------------+----------+          |      |             |
|             |11.x  |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|             |8.x   |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|BIG-IQ       +------+-------------+----------+          |      |             |
|Centralized  |7.x   |None         |Not       |Not       |None  |None         |
|Management   |      |             |applicable|vulnerable|      |             |
|             +------+-------------+----------+          |      |             |
|             |6.x   |None         |Not       |          |      |             |
|             |      |             |applicable|          |      |             |
|F5OS         |1.x   |None         |Not       |Not       |None  |None         |
|             |      |             |applicable|vulnerable|      |             |
|Traffix SDC  |5.x   |5.1.0        |None      |High      |7.0   |Apache Tomcat|

^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.

Recommended Actions

If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by installing a version listed in
the Fixes introduced in column. If the Fixes introduced in column does not list
a version for your branch, then no update candidate currently exists for that
branch and F5 recommends upgrading to a version with the fix (refer to the

If the Fixes introduced in column lists a version prior to the one you are
running, in the same branch, then your version should have the fix.



Supplemental Information

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 - 16.x)
  o K15106: Managing BIG-IQ product hotfixes
  o K15113: BIG-IQ hotfix and point release matrix
  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
  o K03121171: Apache Tomcat vulnerability CVE-2020-9484

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