ESB-2018.3908 - [Appliance] F5 BIG-IP Products: Denial of service - Remote/unauthenticated 2018-12-18

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3908
         K16365: GNU C Library (glibc) vulnerability CVE-2014-9402
                             18 December 2018

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        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-2014-9402  

Reference:         ESB-2018.3848
                   ESB-2018.2910
                   ESB-2018.1091
                   ESB-2015.0428

Original Bulletin: 
   https://support.f5.com/csp/article/K16365

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K16365: GNU C Library (glibc) vulnerability CVE-2014-9402

Security Advisory

Original Publication Date: Apr 04, 2015
Updated Date: Dec 18, 2018

Security Advisory Description

The nss_dns implementation of getnetbyname in GNU C Library (aka glibc) before
2.21, when the DNS backend in the Name Service Switch configuration is enabled,
allows remote attackers to cause a denial of service (infinite loop) by sending
a positive answer while a network name is being process. (CVE-2014-9402)

Impact

This vulnerability can only be exploited if you explicitly enable DNS for
networks in the Name Service Switch Configuration file (/etc/nsswitch.conf). By
default, the BIG-IP system does not have DNS enabled for networks in the Name
Service Switch configuration and is not vulnerable. An attacker with local
access and knowledge of how to make the glibc function trigger an exploit may
be able to cause a denial-of-service (DoS).

Security Advisory Status

F5 Product Development has assigned ID 510311 (BIG-IP), ID 511756 (Enterprise
Manager), ID 511755 (BIG-IQ) and ID 476571 (ARX) to this vulnerability, and has
evaluated the currently supported releases for potential vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H515699 on the Diagnostics >
Identified > High screen.

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 known |Versions known  |          |Vulnerable     |
|Product          |to be          |to be not       |Severity  |component or   |
|                 |vulnerable     |vulnerable      |          |feature        |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|                 |13.0.0 - 13.1.1|14.1.0          |          |               |
|BIG-IP LTM       |12.0.0 - 12.1.3|                |low       |glibc          |
|                 |11.0.0 - 11.6.0|                |          |               |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|BIG-IP AAM       |13.0.0 - 13.1.1|14.1.0          |low       |glibc          |
|                 |12.0.0 - 12.1.3|                |          |               |
|                 |11.4.0 - 11.6.0|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|BIG-IP AFM       |13.0.0 - 13.1.1|14.1.0          |low       |glibc          |
|                 |12.0.0 - 12.1.3|                |          |               |
|                 |11.3.0 - 11.6.0|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|BIG-IP Analytics |13.0.0 - 13.1.1|14.1.0          |low       |glibc          |
|                 |12.0.0 - 12.1.3|                |          |               |
|                 |11.0.0 - 11.6.0|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|                 |13.0.0 - 13.1.1|                |          |               |
|BIG-IP APM       |12.0.0 - 12.1.3|14.1.0          |low       |glibc          |
|                 |11.0.0 - 11.6.0|                |          |               |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|                 |13.0.0 - 13.1.1|                |          |               |
|BIG-IP ASM       |12.0.0 - 12.1.3|14.1.0          |low       |glibc          |
|                 |11.0.0 - 11.6.0|                |          |               |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |11.0.0 - 11.3.0|None            |low       |glibc          |
|Gateway          |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP GTM       |11.0.0 - 11.6.0|None            |low       |glibc          |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|BIG-IP Link      |13.0.0 - 13.1.1|                |          |               |
|Controller       |12.0.0 - 12.1.3|14.1.0          |low       |glibc          |
|                 |11.0.0 - 11.6.0|                |          |               |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|BIG-IP PEM       |13.0.0 - 13.1.1|14.1.0          |low       |glibc          |
|                 |12.0.0 - 12.1.3|                |          |               |
|                 |11.3.0 - 11.6.0|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|                 |14.0.0         |                |          |               |
|                 |13.0.0 - 13.1.1|                |          |               |
|BIG-IP PSM       |12.0.0 - 12.1.3|14.1.0          |low       |glibc          |
|                 |11.0.0 - 11.6.0|                |          |               |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP           |11.0.0 - 11.3.0|None            |low       |glibc          |
|WebAccelerator   |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP WOM       |11.0.0 - 11.3.0|None            |low       |glibc          |
|                 |10.1.0 - 10.2.4|                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|ARX              |6.0.0 - 6.4.0  |None            |high      |glibc          |
+-----------------+---------------+----------------+----------+---------------+
|Enterprise       |3.0.0 - 3.1.1  |None            |low       |glibc          |
|Manager          |2.1.0 - 2.3.0  |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|FirePass         |None           |7.0.0           |Not       |None           |
|                 |               |6.0.0 - 6.1.0   |vulnerable|               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IQ Cloud     |4.0.0 - 4.5.0  |None            |low       |glibc          |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IQ Device    |4.2.0 - 4.5.0  |None            |low       |glibc          |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IQ Security  |4.0.0 - 4.5.0  |None            |low       |glibc          |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IQ ADC       |4.5.0          |None            |low       |glibc          |
+-----------------+---------------+----------------+----------+---------------+
|LineRate         |None           |2.2.0 - 2.5.0   |Not       |None           |
|                 |               |1.6.0 - 1.6.4   |vulnerable|               |
+-----------------+---------------+----------------+----------+---------------+
|F5 WebSafe       |None           |1.0.0           |Not       |None           |
|                 |               |                |vulnerable|               |
+-----------------+---------------+----------------+----------+---------------+
|Traffix SDC      |None           |3.3.2 - 3.5.1   |Not       |None           |
|                 |               |4.0.0 - 4.1.0   |vulnerable|               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |                |Not       |               |
|Clients for      |None           |2.0.0 - 2.0.6   |vulnerable|None           |
|Android          |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |2.0.0 - 2.0.4   |Not       |               |
|Clients for Apple|None           |1.0.5 - 1.0.6   |vulnerable|None           |
|iOS              |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |None           |6035.x - 7110.x |Not       |None           |
|Clients for Linux|               |                |vulnerable|               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |                |Not       |               |
|Clients for MAC  |None           |6035.x - 7110.x |vulnerable|None           |
|OS X             |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |                |Not       |               |
|Clients for      |None           |6035.x - 7110.x |vulnerable|None           |
|Windows          |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |                |Not       |               |
|Clients Windows  |None           |1.0.0.x         |vulnerable|None           |
|Phone 8.1        |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |                |Not       |               |
|Portal for       |None           |1.0.0 - 1.0.2   |vulnerable|None           |
|Android          |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+
|BIG-IP Edge      |               |                |Not       |               |
|Portal for Apple |None           |1.0.0 - 1.0.3   |vulnerable|None           |
|iOS              |               |                |          |               |
+-----------------+---------------+----------------+----------+---------------+

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 Versions known to be not vulnerable 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.

If you have manually enabled DNS for networks in the Name Service Switch
Configuration file, you can mitigate this vulnerability by disabling DNS for
networks in the Name Service Switch Configuration file (/etc/nsswitch.conf).
Additionally, you should permit access to F5 products only over a secure
network, and limit login access to trusted users. For additional information,
refer to K13092: Overview of securing access to the BIG-IP system.

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