ESB-2018.0890.2 - UPDATE [Appliance] F5 BIG-IP Products: Denial of service - Remote/unauthenticated 2018-05-08

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2018.0890.2
      K52319810:Apache Portable Runtime vulnerability CVE-2017-12613
                                8 May 2018

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

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12613  

Original Bulletin: 
   https://support.f5.com/csp/article/K52319810

Revision History:  May    8 2018: Vendor added that BIG-IP products are fixed in version 13.1.0.6
                   March 28 2018: Initial Release

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K52319810:Apache Portable Runtime vulnerability CVE-2017-12613

Security Advisory

Original Publication Date: 15 Mar, 2018
Updated Date: May 08, 2018

Security Advisory Description

When apr_time_exp*() or apr_os_exp_time*() functions are invoked with an
invalid month field value in Apache Portable Runtime APR 1.6.2 and prior, out
of bounds memory may be accessed in converting this value to an apr_time_exp_t
value, potentially revealing the contents of a different static heap value or
resulting in program termination, and may represent an information disclosure
or denial of service vulnerability to applications which call these APR
functions with unvalidated external input. (CVE-2017-12613)

Impact

This vulnerability may allow unauthorized information disclosure or denial of
service.


Security Advisory Status

F5 Product Development has assigned IDs 709972 and 709979 (BIG-IP) and ID
710147 (BIG-IQ) to this vulnerability. Additionally, BIG-IP iHealth may list
Heuristic H52319810 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.

+-------------------+------+----------+----------+----------+------+----------+
|                   |      |Versions  |Fixes     |          |CVSSv3|Vulnerable|
|Product            |Branch|known to  |introduced|Severity  |score^|component |
|                   |      |be        |in        |          |1     |or feature|
|                   |      |vulnerable|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |13.x  |13.0.0 -  |13.1.0.6  |          |      |          |
|                   |      |13.1.0    |          |          |      |          |
|BIG-IP (LTM, AAM,  +------+----------+----------+          |      |          |
|AFM, Analytics,    |12.x  |12.1.0 -  |None      |          |      |          |
|APM, ASM, DNS, Edge|      |12.1.3    |          |          |      |APR       |
|Gateway, GTM, Link +------+----------+----------+High      |7.4   |library   |
|Controller, PEM,   |      |11.6.1 -  |          |          |      |for httpd |
|WebAccelerator,    |      |11.6.3    |          |          |      |          |
|WebSafe)           |11.x  |11.5.1 -  |None      |          |      |          |
|                   |      |11.5.5    |          |          |      |          |
|                   |      |11.2.1    |          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|ARX                |6.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |      |          |          |          |      |APR       |
|Enterprise Manager |3.x   |3.1.1     |None      |High      |7.4   |library   |
|                   |      |          |          |          |      |for httpd |
+-------------------+------+----------+----------+----------+------+----------+
|                   |5.x   |5.0.0 -   |None      |          |      |APR       |
|BIG-IQ Centralized |      |5.4.0     |          |High      |7.4   |library   |
|Management         +------+----------+----------+          |      |for httpd |
|                   |4.x   |4.6.0     |None      |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|BIG-IQ Cloud and   |      |          |          |          |      |APR       |
|Orchestration      |1.x   |1.0.0     |None      |High      |7.4   |library   |
|                   |      |          |          |          |      |for httpd |
+-------------------+------+----------+----------+----------+------+----------+
|                   |      |2.0.1 -   |          |          |      |APR       |
|F5 iWorkflow       |2.x   |2.3.0     |None      |High      |7.4   |library   |
|                   |      |          |          |          |      |for httpd |
+-------------------+------+----------+----------+----------+------+----------+
|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.

To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
.

Mitigation

To mitigate this vulnerability, you should permit management access to F5
products only over a secure network and restrict access for affected systems to
trusted users. For more information, refer to K13309: Restricting access to the
Configuration utility by source IP address (11.x - 13.x) and K13092: Overview
of securing access to the BIG-IP system.

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