ESB-2017.3237.3 - UPDATE [Appliance] F5 BIG-IP: Denial of service - Remote/unauthenticated 2017-12-22

Printable version
PGP/GPG verifiable version

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

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

                              ESB-2017.3237.3
                  Denial of Service patched in F5 BIG-IP
                             22 December 2017

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

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

Product:           F5 BIG-IP
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6140  

Original Bulletin: 
   https://support.f5.com/csp/article/K55102452

Revision History:  December 22 2017: Updated source text
                   December 21 2017: Updated source text
                   December 20 2017: Initial Release

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

K55102452: TMM vulnerability CVE-2017-6140

Security Advisory

Original Publication Date: Dec 20, 2017
Updated Date: Dec 21, 2017

Security Advisory Description

Undisclosed sequence of packets sent to Virtual Servers with client or server
SSL profiles using AES-GCM cipher suites may cause disruption of data plane
services. (CVE-2017-6140)

This vulnerability affects the following BIG-IP
platforms: 2000s, 2200s, 4000s, 4200v, i5600, i5800, i7600, i7800, i10600,
i10800, and VIPRION 4450 blade.

Impact

This vulnerability allows disruption of service.

Security Advisory Status

F5 Product Development has assigned IDs 624903 and 625860 (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.

+-----------------------------------------------------------------------------+
|             |      |Versions  |Fixes     |          |CVSSv3|Vulnerable      |
|Product      |Branch|known to  |introduced|Severity  |score^|component or    |
|             |      |be        |in        |          |1     |feature         |
|             |      |vulnerable|          |          |      |                |
|-------------+------+----------+----------+----------+------+----------------|
|             |13.x  |None      |13.0.0    |          |      |                |
|BIG-IP (LTM, |------+----------+----------|          |      |Virtual servers |
|AAM, AFM,    |12.x  |12.0.0 -  |12.1.3    |          |      |with a Client or|
|Analytics,   |      |12.1.2    |          |High      |7.9   |Server SSL      |
|APM, ASM,    |------+----------+----------|          |      |profile using   |
|DNS, GTM,    |      |11.6.1    |11.6.2    |          |      |AES-GCM cipher  |
|PEM)         |11.x  |11.5.1 -  |11.5.5    |          |      |suites          |
|             |      |11.5.4    |          |          |      |                |
|-------------+------+----------+----------+----------+------+----------------|
|             |13.x  |None      |Not       |          |      |                |
|             |      |          |applicable|          |      |                |
|BIG-IP (Link |------+----------+----------|          |      |                |
|Controller,  |12.x  |None      |Not       |Not       |None  |None            |
|WebSafe)     |      |          |applicable|vulnerable|      |                |
|             |------+----------+----------|          |      |                |
|             |11.x  |None      |Not       |          |      |                |
|             |      |          |applicable|          |      |                |
|-------------+------+----------+----------+----------+------+----------------|
|ARX          |6.x   |None      |Not       |Not       |None  |None            |
|             |      |          |applicable|vulnerable|      |                |
|-------------+------+----------+----------+----------+------+----------------|
|Enterprise   |3.x   |None      |Not       |Not       |None  |None            |
|Manager      |      |          |applicable|vulnerable|      |                |
|-------------+------+----------+----------+----------+------+----------------|
|BIG-IQ       |      |          |          |          |      |                |
|(Cloud,      |      |          |Not       |Not       |      |                |
|Device,      |4.x   |None      |applicable|vulnerable|None  |None            |
|Security,    |      |          |          |          |      |                |
|ADC)         |      |          |          |          |      |                |
|-------------+------+----------+----------+----------+------+----------------|
|             |5.x   |None      |Not       |          |      |                |
|BIG-IQ       |      |          |applicable|Not       |      |                |
|Centralized  |------+----------+----------|vulnerable|None  |None            |
|Management   |4.x   |None      |Not       |          |      |                |
|             |      |          |applicable|          |      |                |
|-------------+------+----------+----------+----------+------+----------------|
|BIG-IQ Cloud |      |          |Not       |Not       |      |                |
|and          |1.x   |None      |applicable|vulnerable|None  |None            |
|Orchestration|      |          |          |          |      |                |
|-------------+------+----------+----------+----------+------+----------------|
|F5 iWorkflow |2.x   |None      |Not       |Not       |None  |None            |
|             |      |          |applicable|vulnerable|      |                |
|-------------+------+----------+----------+----------+------+----------------|
|LineRate     |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|          |      |                |
+-----------------------------------------------------------------------------+

^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.

Note: For details about how Security Advisory articles are versioned, and what
versions are listed in the table, refer to K51812227: Understanding Security
Advisory versioning.

Mitigation

To mitigate this vulnerability, you can disable the AES-GCM cipher suites in
the client or server SSL profiles. For example DEFAULT:!AES-GCM. For
information about configuring ciphers in SSL profiles, refer to K17370:
Configuring the cipher strength for SSL profiles (12.x - 13.x) or K13171:
Configuring the cipher strength for SSL profiles (11.x).

Note: The vulnerable AES-GCM ciphers are only available starting in TLSv1.2.

- --------------------------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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=0Ujj
-----END PGP SIGNATURE-----

« Back to bulletins