ESB-2018.1891 - [Appliance] F5 products: Denial of service - Existing account 2018-06-28

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1891
            K13213573: Linux kernel vulnerability CVE-2012-6701
                               28 June 2018

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

Product:           F5 BIG-IP products
                   F5 Enterprise Manager
                   F5 BIG-IQ products
                   F5 iWorkflow
                   F5 Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Existing Account
                   Reduced Security  -- Existing Account
Resolution:        Mitigation
CVE Names:         CVE-2012-6701  

Reference:         ASB-2016.0079
                   ESB-2018.1797

Original Bulletin: 
   https://support.f5.com/csp/article/K13213573

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K13213573: Linux kernel vulnerability CVE-2012-6701

Security Advisory

Original Publication Date: Jun 28, 2018

Security Advisory Description

Integer overflow in fs/aio.c in the Linux kernel before 3.4.1 allows local
users to cause a denial of service or possibly have unspecified other impact
via a large AIO iovec. (CVE-2012-6701)

Impact

This vulnerability allows for a disruption of service.

Security Advisory Status

F5 Product Development has assigned ID 725905 (BIG-IP), ID 725977 (BIG-IQ and
F5 iWorkflow), ID 725976 (Enterprise Manager), and IDs CPF-24917 and CPF-24918
(Traffix SDC) 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. For more information
about security advisory versioning, refer to K51812227: Understanding Security
Advisory versioning.

+-----------------------------------------------------------------------------+
|                  |      |Versions  |Fixes     |           |CVSSv3|Vulnerable|
|Product           |Branch|known to  |introduced|Severity   |score^|component |
|                  |      |be        |in        |           |1     |or feature|
|                  |      |vulnerable|          |           |      |          |
|------------------+------+----------+----------+-----------+------+----------|
|BIG-IP (LTM, AAM, |13.x  |None      |Not       |           |      |          |
|AFM, Analytics,   |      |          |applicable|           |      |          |
|APM, ASM, DNS,    |------+----------+----------|           |      |          |
|Edge Gateway, FPS,|12.x  |12.1.0 -  |None      |Low        |3.6   |Linux     |
|GTM, Link         |      |12.1.3    |          |           |      |kernel    |
|Controller, PEM,  |------+----------+----------|           |      |          |
|WebAccelerator)   |11.x  |11.2.1 -  |None      |           |      |          |
|                  |      |11.6.3    |          |           |      |          |
|------------------+------+----------+----------+-----------+------+----------|
|                  |      |          |Not       |Not        |      |          |
|ARX               |6.x   |None      |applicable|vulnerable^|None  |None      |
|                  |      |          |          |2          |      |          |
|------------------+------+----------+----------+-----------+------+----------|
|Enterprise Manager|3.x   |3.1.1     |None      |Low        |3.6   |Linux     |
|                  |      |          |          |           |      |kernel    |
|------------------+------+----------+----------+-----------+------+----------|
|                  |6.x   |6.0.0     |None      |           |      |          |
|BIG-IQ Centralized|------+----------+----------|Low        |3.6   |Linux     |
|Management        |5.x   |5.0.0 -   |None      |           |      |kernel    |
|                  |      |5.4.0     |          |           |      |          |
|------------------+------+----------+----------+-----------+------+----------|
|                  |      |2.1.0 -   |Not       |           |      |Linux     |
|F5 iWorkflow      |2.x   |2.3.0     |applicable|Low        |3.6   |kernel    |
|                  |      |None      |          |           |      |          |
|------------------+------+----------+----------+-----------+------+----------|
|LineRate          |2.x   |None      |Not       |Not        |None  |None      |
|                  |      |          |applicable|vulnerable |      |          |
|------------------+------+----------+----------+-----------+------+----------|
|                  |5.x   |5.0.0 -   |None      |           |      |          |
|Traffix SDC       |      |5.1.0     |          |Low        |3.6   |Linux     |
|                  |------+----------+----------|           |      |kernel    |
|                  |4.x   |4.4.0     |None      |           |      |          |
+-----------------------------------------------------------------------------+

^1 This vulnerability (CVE-2012-6701) predates CVSSv3 scores, so the CVSSv2
scores are listed.

^2 The specified products contain 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 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

To mitigate this vulnerability, you should permit management access to F5
products only over a secure network and restrict command line 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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