ESB-2018.2466.2 - UPDATE [Appliance] F5 BIG-IP products: Denial of service - Remote/unauthenticated 2018-11-05

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2018.2466.2
             K98528405:BIG-IP BIND vulnerability CVE-2018-5740
                              5 November 2018

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

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

Product:           F5 BIG-IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5740  

Reference:         ESB-2018.2293

Original Bulletin: 
   https://support.f5.com/csp/article/K98528405

Revision History:  November  5 2018: F5 have introduced a fix in v14.0.3.
                   August   21 2018: Initial Release

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

K98528405: BIG-IP BIND vulnerability CVE-2018-5740

Security Advisory

Original Publication Date: Aug 21, 2018
Updated Date: Nov 03, 2018

Security Advisory Description

A flaw in the "deny-answer-aliases" feature can cause an INSIST assertion
failure in named. (CVE-2018-5740)

Impact

A flaw in a rarely used BIND feature can cause an assertion failure in named.
As a result, the bind process restarts.

Security Advisory Status

F5 Product Development has assigned ID 738985 (BIG-IP) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H98528405 on the Diagnostics >
Identified > High page.

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 |
|                   |      |be        |in        |          |      |or feature|
|                   |      |vulnerable|          |          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|                   |14.x  |14.0.0    |14.0.0.3  |          |      |          |
|BIG-IP (LTM, AAM,  |------+----------+----------|          |      |          |
|AFM, Analytics,    |13.x  |13.0.0 -  |Not       |          |      |          |
|APM, ASM, DNS, Edge|      |13.1.1    |applicable|          |      |          |
|Gateway, FPS, GTM, |------+----------+----------|High^2    |7.5   |named     |
|Link Controller,   |12.x  |12.1.0 -  |Not       |          |      |          |
|PEM,               |      |12.1.3    |applicable|          |      |          |
|WebAccelerator)    |------+----------+----------|          |      |          |
|                   |11.x  |11.2.1 -  |Not       |          |      |          |
|                   |      |11.6.3    |applicable|          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|Enterprise Manager |3.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
|-------------------+------+----------+----------+----------+------+----------|
|                   |6.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|                   |------+----------+----------|          |      |          |
|BIG-IQ Centralized |5.x   |None      |Not       |Not       |None  |None      |
|Management         |      |          |applicable|vulnerable|      |          |
|                   |------+----------+----------|          |      |          |
|                   |4.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|-------------------+------+----------+----------+----------+------+----------|
|BIG-IQ Cloud and   |1.x   |None      |Not       |Not       |None  |None      |
|Orchestration      |      |          |applicable|vulnerable|      |          |
|-------------------+------+----------+----------+----------+------+----------|
|F5 iWorkflow       |2.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
|-------------------+------+----------+----------+----------+------+----------|
|                   |5.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|Not       |      |          |
|Traffix SDC        |------+----------+----------|vulnerable|None  |None      |
|                   |4.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
+-----------------------------------------------------------------------------+

^2 The vulnerability is exposed when the named configuration feature "
deny-answer-aliases" is explicitly configured (this feature is not
configured in the default named configuration).

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.

Mitigation

Do not configure BIND named to use the deny-answer-aliases feature.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=K4cY
-----END PGP SIGNATURE-----

« Back to bulletins