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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.3524
                           Apache vulnerability
                              22 October 2021

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

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

Product:           F5OS
                   Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
                   Access Confidential Data       -- Remote/Unauthenticated
                   Reduced Security               -- Remote/Unauthenticated
Resolution:        None
CVE Names:         CVE-2021-40438  

Reference:         ESB-2021.3482
                   ESB-2021.3429
                   ESB-2021.3394
                   ESB-2021.3387
                   ESB-2021.3373

Original Bulletin: 
   https://support.f5.com/csp/article/K01552024

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

K01552024: Apache vulnerability CVE-2021-40438

Original Publication Date: 22 Oct, 2021

Security Advisory Description

A crafted request uri-path can cause mod_proxy to forward the request to an
origin server chosen by the remote user. This issue affects Apache HTTP Server
2.4.48 and earlier. (CVE-2021-40438)

Impact

A remote attacker can exploit this vulnerability by sending a specially crafted
request uri-path that forwards the request to an origin server chosen by the
remote user.

Security Advisory Status

F5 Product Development has assigned ID 1055789 (F5OS) 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, 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 given minor branch, that fix applies to
all subsequent maintenance and point releases for that branch, and no
additional fixes for that branch will be listed in the table. For example, when
a fix is introduced in 14.1.2.3, the fix also applies to 14.1.2.4, and all
later 14.1.x releases (14.1.3.x., 14.1.4.x). For more information, refer to
K51812227: Understanding security advisory versioning. Additionally, software
versions preceding those listed in the Applies to (see versions) box of this
article have reached the End of Technical Support (EoTS) phase of their
lifecycle and are no longer evaluated for security issues. For more
information, refer to the Security hotfixes section of K4602: Overview of the
F5 security vulnerability response policy.

+------------+------+--------------+----------+----------+------+-------------+
|            |      |Versions known|Fixes     |          |CVSSv3|Vulnerable   |
|Product     |Branch|to be         |introduced|Severity  |score^|component or |
|            |      |vulnerable^1  |in        |          |2     |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   |1.2.0 - 1.2.1 |None      |Critical  |9.0   |Apache       |
|            |      |1.1.0 - 1.1.4 |          |          |      |             |
+------------+------+--------------+----------+----------+------+-------------+
|Traffix SDC |5.x   |5.2.0         |Not       |Not       |None  |None         |
|            |      |5.1.0         |applicable|vulnerable|      |             |
+------------+------+--------------+----------+----------+------+-------------+

^1F5 evaluates only software versions that have not yet reached the End of
Technical Support (EoTS) phase of their lifecycle.

^2The 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
table).

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.

Mitigation

None

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 K8986: F5 software lifecycle policy
  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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