ESB-2018.1356 - [Appliance] F5 BIG-IP products: Denial of service - Remote/unauthenticated 2018-05-03

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1356
                       TMM with HTTP/2 vulnerability
                                3 May 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-2018-5514  

Original Bulletin: 
   https://support.f5.com/csp/article/K45320419

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K45320419: TMM with HTTP/2 vulnerability CVE-2018-5514

Security Advisory

Original Publication Date: May 01, 2018
Updated Date: May 02, 2018

Security Advisory Description

Maliciously crafted HTTP/2 request frames can lead to denial of service. There
is data plane exposure for virtual servers when the HTTP2 profile is enabled.
There is no control plane exposure to this issue. (CVE-2018-5514)

Impact

The BIG-IP system may temporarily fail to process traffic as it recovers from a
Traffic Management Microkernel (TMM) restart, and devices configured as a high
availability (HA) pair may fail over.

Security Advisory Status

F5 Product Development has assigned ID 707186 (BIG-IP) 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  |13.1.0    |13.1.0.6  |           |      |          |
|AFM, APM, ASM,    +------+----------+----------+           |      |          |
|Link Controller,  |12.x  |None      |Not       |           |      |HTTP/2 or |
|PEM,              |      |          |applicable|High       |7.5   |SPDY      |
|WebAccelerator,   +------+----------+----------+           |      |          |
|WebSafe)          |11.x  |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|                  |13.x  |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
|BIG-IP (Analytics,+------+----------+----------+Not        |      |          |
|DNS, Edge Gateway,|12.x  |None      |Not       |vulnerable^|None  |None      |
|GTM)              |      |          |applicable|2          |      |          |
|                  +------+----------+----------+           |      |          |
|                  |11.x  |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|ARX               |6.x   |None      |Not       |Not        |None  |None      |
|                  |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|Enterprise Manager|3.x   |None      |Not       |Not        |None  |None      |
|                  |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|                  |5.x   |None      |Not       |           |      |          |
|BIG-IQ Centralized|      |          |applicable|Not        |      |          |
|Management        +------+----------+----------+vulnerable |None  |None      |
|                  |4.x   |None      |Not       |           |      |          |
|                  |      |          |applicable|           |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|BIG-IQ Cloud and  |1.x   |None      |Not       |Not        |None  |None      |
|Orchestration     |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|F5 iWorkflow      |2.x   |None      |Not       |Not        |None  |None      |
|                  |      |          |applicable|vulnerable |      |          |
+------------------+------+----------+----------+-----------+------+----------+
|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.

^2The 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

None

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 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

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