ESB-2018.0021 - [Appliance] F5 BIG-IP Products: Reduced security - Remote/unauthenticated - 2018-01-02


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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0021
          K46123931: cURL and libcurl vulnerability CVE-2016-8619
                              2 January 2018

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Reduced Security -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-8619  

Reference:         ASB-2017.0001
                   ESB-2016.2642
                   ESB-2016.2607

Original Bulletin: 
   https://access.redhat.com/security/cve/CVE-2016-8619

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K46123931: cURL and libcurl vulnerability CVE-2016-8619

Security Advisory
 
Original Publication Date: Apr 13, 2017
Updated Date: Dec 27, 2017

Security Advisory Description

** RESERVED ** This candidate has been reserved by an organization or
individual that will use it when announcing a new security problem. When the
candidate has been publicized, the details for this candidate will be provided.
 (CVE-2016-8619)

Impact

An attacker may use this vulnerability to exploit the usage of the cURL command
with Kerberos authentication on custom BIG-IP monitors and/or the command line.

Security Advisory Status

F5 Product Development has assigned ID 655371 (BIG-IP), IDs CPF-23662,
CPF-23663, and CPF-23664 (Traffix), and ID 476510 (ARX) to this vulnerability.
Additionally, BIG-IP iHealth may list Heuristic H46123931 on the Diagnostics >
Identified > Medium 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 to|           |Vulnerable     |
|Product        |to be          |be not vulnerable|Severity   |component or   |
|               |vulnerable     |                 |           |feature        |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |               |
|BIG-IP LTM     |12.0.0 - 12.1.2|13.1.0           |Medium     |cURL and       |
|               |11.4.0 - 11.6.1|                 |           |libcurl        |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |cURL and       |
|BIG-IP AAM     |12.0.0 - 12.1.2|13.1.0           |Medium     |libcurl        |
|               |11.4.0 - 11.6.1|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |cURL and       |
|BIG-IP AFM     |12.0.0 - 12.1.2|13.1.0           |Medium     |libcurl        |
|               |11.4.0 - 11.6.1|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |               |
|BIG-IP         |12.0.0 - 12.1.2|13.1.0           |Medium     |cURL and       |
|Analytics      |11.4.0 - 11.6.1|                 |           |libcurl        |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |               |
|BIG-IP APM     |12.0.0 - 12.1.2|13.1.0           |Medium     |cURL and       |
|               |11.4.0 - 11.6.1|                 |           |libcurl        |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |               |
|BIG-IP ASM     |12.0.0 - 12.1.2|13.1.0           |Medium     |cURL and       |
|               |11.4.0 - 11.6.1|                 |           |libcurl        |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP DNS     |13.0.0         |13.1.0           |Medium     |cURL and       |
|               |12.0.0 - 12.1.2|                 |           |libcurl        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP Edge    |11.2.1         |None             |Medium     |cURL and       |
|Gateway        |               |                 |           |libcurl        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP GTM     |11.4.0 - 11.6.1|None             |Medium     |cURL and       |
|               |11.2.1         |                 |           |libcurl        |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |               |
|BIG-IP Link    |12.0.0 - 12.1.2|13.1.0           |Medium     |cURL and       |
|Controller     |11.4.0 - 11.6.1|                 |           |libcurl        |
|               |11.2.1         |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |cURL and       |
|BIG-IP PEM     |12.0.0 - 12.1.2|13.1.0           |Medium     |libcurl        |
|               |11.4.0 - 11.6.1|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP PSM     |11.4.0 - 11.4.1|None             |Medium     |cURL and       |
|               |               |                 |           |libcurl        |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IP         |11.2.1         |None             |Medium     |cURL and       |
|WebAccelerator |               |                 |           |libcurl        |
+---------------+---------------+-----------------+-----------+---------------+
|               |13.0.0         |                 |           |cURL and       |
|BIG-IP WebSafe |12.0.0 - 12.1.2|13.1.0           |Medium     |libcurl        |
|               |11.6.0 - 11.6.1|                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|ARX            |6.2.0 - 6.4.0  |None             |Low        |libcurl        |
+---------------+---------------+-----------------+-----------+---------------+
|Enterprise     |None           |3.1.1            |Not        |None           |
|Manager        |               |                 |vulnerable |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Cloud   |None           |4.0.0 - 4.5.0    |Not        |None           |
|               |               |                 |vulnerable |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Device  |None           |4.2.0 - 4.5.0    |Not        |None           |
|               |               |                 |vulnerable |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Security|None           |4.0.0 - 4.5.0    |Not        |None           |
|               |               |                 |vulnerable |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ ADC     |None           |4.5.0            |Not        |None           |
|               |               |                 |vulnerable |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ         |               |5.0.0 - 5.1.0    |Not        |               |
|Centralized    |None           |4.6.0            |vulnerable |None           |
|Management     |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|BIG-IQ Cloud   |               |                 |Not        |               |
|and            |None           |1.0.0            |vulnerable |None           |
|Orchestration  |               |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+
|F5 iWorkflow   |None           |2.0.0 - 2.1.0    |Not        |None           |
|               |               |                 |vulnerable |               |
+---------------+---------------+-----------------+-----------+---------------+
|               |               |                 |Not        |               |
|LineRate       |None           |2.5.0 - 2.6.2    |vulnerable^|None           |
|               |               |                 |1          |               |
+---------------+---------------+-----------------+-----------+---------------+
|Traffix SDC    |5.0.0 - 5.1.0  |None             |Medium     |cURL           |
|               |4.0.0 - 4.4.0  |                 |           |               |
+---------------+---------------+-----------------+-----------+---------------+

^1 The specified product contains the affected code. However, F5 identifies the
vulnerability status as Not vulnerable because the attacker cannot exploit the
code in default, standard, or recommended configurations.

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.

Mitigation

BIG-IP

If your custom health monitor references the libcurl library, or if you have
any custom cURL scripts installed, F5 recommends that you modify the monitor to
avoid any reference to the affected cURL library for Kerberos authentication.

ARX

To mitigate this vulnerability, do not enable the API functionality.

Supplemental Information

  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents
  o K4602: Overview of the F5 security vulnerability response policy
  o K4918: Overview of the F5 critical issue hotfix policy
  o K167: Downloading software and firmware from F5

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