ESB-2018.2737 - [Appliance] F5 WebSafe Alert Server: Execute arbitrary code/commands - Existing account 2018-09-14

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

                               ESB-2018.2737
             F5 WebSafe Dashboard vulnerability CVE-2018-5545
                             14 September 2018

===========================================================================

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

Product:           F5 WebSafe Alert Server
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5545  

Original Bulletin: 
   https://support.f5.com/csp/article/K20226900

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K20226900:F5 WebSafe Dashboard vulnerability CVE-2018-5545

Security Advisory

Original Publication Date: 13 Sep, 2018

Security Advisory Description

A malicious, authenticated user can execute code on the F5 WebSafe Alert
Server by using a maliciously crafted payload. (CVE-2018-5545)

Impact

F5 WebSafe Alert Server

An attacker with an authenticated account may be able to perform a malicious
remote code execution on the F5 WebSafe Alert Server through the Dashboard.

BIG-IP, BIG-IQ, F5 iWorkflow, Enterprise Manager, ARX, and Traffix SDC

There is no impact; these F5 products are not affected by this vulnerability.


Security Advisory Status

F5 Product Development has assigned ID 596368 (F5 WebSafe Alert Server) 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|          |          |      |          |
+---------------+----------+----------+----------+----------+------+----------+
|               |14.x      |None      |Not       |          |      |          |
|BIG-IP (LTM,   |          |          |applicable|          |      |          |
|AAM, AFM,      +----------+----------+----------+          |      |          |
|Analytics, APM,|13.x      |None      |Not       |          |      |          |
|ASM, DNS, Edge |          |          |applicable|Not       |      |          |
|Gateway, FPS,  +----------+----------+----------+vulnerable|None  |None      |
|GTM, Link      |12.x      |None      |Not       |          |      |          |
|Controller,    |          |          |applicable|          |      |          |
|PEM,           +----------+----------+----------+          |      |          |
|WebAccelerator)|11.x      |None      |Not       |          |      |          |
|               |          |          |applicable|          |      |          |
+---------------+----------+----------+----------+----------+------+----------+
|Enterprise     |3.x       |None      |Not       |Not       |None  |None      |
|Manager        |          |          |applicable|vulnerable|      |          |
+---------------+----------+----------+----------+----------+------+----------+
|               |6.x       |None      |Not       |          |      |          |
|               |          |          |applicable|          |      |          |
|BIG-IQ         +----------+----------+----------+          |      |          |
|Centralized    |5.x       |None      |Not       |Not       |None  |None      |
|Management     |          |          |applicable|vulnerable|      |          |
|               +----------+----------+----------+          |      |          |
|               |4.x       |None      |Not       |          |      |          |
|               |          |          |applicable|          |      |          |
+---------------+----------+----------+----------+----------+------+----------+
|BIG-IQ Cloud   |          |          |Not       |Not       |      |          |
|and            |1.x       |None      |applicable|vulnerable|None  |None      |
|Orchestration  |          |          |          |          |      |          |
+---------------+----------+----------+----------+----------+------+----------+
|F5 iWorkflow   |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|          |      |          |
+---------------+----------+----------+----------+----------+------+----------+
|F5 WebSafe     |Not       |1.0.0 -   |4.2.6 +   |Critical  |9.9   |Dashboard |
|Alert Server   |applicable|4.2.6     |patches^2 |          |      |          |
+---------------+----------+----------+----------+----------+------+----------+

^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.

^2 To fix the vulnerability, you must upgrade to F5 WebSafe Alert Server 4.2.6
and install the patches. To obtain the patches, contact F5 Technical Support;
the patches are not available on F5 Downloads site.


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 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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