ESB-2018.1354 - [Appliance] F5 products: Access confidential data - Existing account 2018-05-03

Printable version
PGP/GPG verifiable version

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

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

                               ESB-2018.1354
                         TMOS Shell vulnerability
                                3 May 2018

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

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

Product:           F5 products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5516  

Original Bulletin: 
   https://support.f5.com/csp/article/K37442533

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

K37442533: TMOS Shell vulnerability CVE-2018-5516

Security Advisory

Original Publication Date: May 01, 2018
Updated Date: May 03, 2018

Security Advisory Description

Authenticated users granted TMOS Shell (tmsh) access can access objects on the
file system which would normally be disallowed by tmsh restrictions. This
allows for authenticated, low privileged attackers to exfiltrate objects on the
file system which should not be allowed. (CVE-2018-5516) 

Impact

This vulnerability allows unauthorized privileges to authenticated
administrative users with tmsh access.

Security Advisory Status

F5 Product Development has assigned ID 632875 (BIG-IP), ID 709043 (BIG-IQ), and
ID 709042 (Enterprise Manager) 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 |
|                   |      |be        |in        |          |1     |or feature|
|                   |      |vulnerable|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|BIG-IP (LTM, AAM,  |13.x  |13.0.0 -  |13.1.0.6  |          |      |          |
|AFM, Analytics,    |      |13.1.0    |13.0.1    |          |      |          |
|APM, ASM, DNS, Edge+------+----------+----------+          |      |          |
|Gateway, GTM, Link |12.x  |12.1.0 -  |12.1.3    |Low       |3.3   |tmsh      |
|Controller, PEM,   |      |12.1.2    |          |          |      |          |
|WebAccelerator,    +------+----------+----------+          |      |          |
|WebSafe)           |11.x  |11.2.1 -  |None      |          |      |          |
|                   |      |11.6.3    |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|ARX                |6.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|Enterprise Manager |3.x   |3.1.1     |None      |Low       |3.3   |tmsh      |
+-------------------+------+----------+----------+----------+------+----------+
|                   |5.x   |5.0.0 -   |None      |          |      |          |
|BIG-IQ Centralized |      |5.4.0     |          |Low       |3.3   |tmsh      |
|Management         +------+----------+----------+          |      |          |
|                   |4.x   |4.6.0     |None      |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|BIG-IQ Cloud and   |1.x   |1.0.0     |None      |Low       |3.3   |tmsh      |
|Orchestration      |      |          |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|F5 iWorkflow       |2.x   |2.0.2 -   |None      |Low       |3.3   |tmsh      |
|                   |      |2.3.0     |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|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.

Mitigation

There is no mitigation for this vulnerability. However, administrative users
that have only Configuration utility permissions are not able to exploit this
vulnerability.

Acknowledgements

F5 would like to acknowledge Carlo Beccaria for bringing this issue to our
attention and for following the highest standards of responsible disclosure.

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 - 13.x)
  o K15106: Managing BIG-IQ product hotfixes
  o K15113: BIG-IQ hotfix matrix
  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 K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems

- --------------------------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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=Fl6S
-----END PGP SIGNATURE-----

« Back to bulletins