ESB-2018.1637.2 - UPDATE [Appliance] F5 BIG-IP products: Denial of service - Remote/unauthenticated 2018-08-14

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2018.1637.2
                 BIG-IP SSL profile vulnerability patched
                              14 August 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-2018-5524  

Original Bulletin: 
   https://support.f5.com/csp/article/K53931245

Revision History:  August 14 2018: Updated security advisory status table. 
                   May    31 2018: Initial Release

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K53931245:BIG-IP SSL profile vulnerability CVE-2018-5524

Security Advisory

Original Publication Date: 31 May, 2018

Latest   Publication Date: 14 Aug, 2018

Security Advisory Description

Under certain conditions, virtual servers configured with Client SSL or Server
SSL profiles that make use of network hardware security module (HSM)
functionality are exposed and impacted by this issue.  (CVE-2018-5524)

Impact

Malformed Transport Layer Security (TLS) requests sent to virtual servers
using network HSM functionality may cause a degradation of service. 

Note: If the BIG-IP system is configured with both virtual servers using
network HSM functionality and virtual servers that do not use network HSM
functionality, only the virtual servers using network HSM are exposed to this
vulnerability.


Security Advisory Status

F5 Product Development has assigned ID 699346 (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|          |          |      |          |
+------------------+------+----------+----------+----------+------+----------+
|                  |14.x  |None      |14.0.0    |          |      |          |
|                  +------+----------+----------+          |      |Virtual   |
|BIG-IP (LTM, AAM, |13.x  |13.0.0 -  |13.1.0.6  |          |      |servers   |
|AFM, Analytics,   |      |13.1.0    |13.0.1    |          |      |using     |
|APM, ASM, Edge    +------+----------+----------+Medium    |5.3   |Client SSL|
|Gateway, FPS, Link|12.x  |12.1.0 -  |12.1.3.2  |          |      |or Server |
|Controller, PEM,  |      |12.1.3    |          |          |      |SSL       |
|WebAccelerator)   +------+----------+----------+          |      |profiles  |
|                  |11.x  |11.6.1 HF2|11.6.3.2  |          |      |          |
|                  |      |- 11.6.3  |          |          |      |          |
+------------------+------+----------+----------+----------+------+----------+
|                  |13.x  |None      |Not       |          |      |          |
|                  |      |          |applicable|          |      |          |
|                  +------+----------+----------+          |      |          |
|BIG-IP (DNS, GTM) |12.x  |None      |Not       |Not       |None  |None      |
|                  |      |          |applicable|vulnerable|      |          |
|                  +------+----------+----------+          |      |          |
|                  |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|          |      |          |
+------------------+------+----------+----------+----------+------+----------+

^1 The 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.

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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