ESB-2018.1118.2 - UPDATE [Appliance] F5 products: Denial of service - Remote/unauthenticated 2018-04-18

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             AUSCERT External Security Bulletin Redistribution

      Apache HTTP vulnerability CVE-2018-1301 in F5 Networks products
                               18 April 2018


        AusCERT Security Bulletin Summary

Product:           F5 BIG-IP products
                   F5 ARX
                   F5 Enterprise Manager
                   F5 Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2018-1301  

Reference:         ESB-2018.1001

Original Bulletin:

Revision History:  April 18 2018: Heuristic H78131906 now detects this.
                   April 12 2018: Initial Release

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K78131906: Apache HTTPD vulnerability CVE-2018-1301

Security Advisory

Original Publication Date: Apr 12, 2018
Updated Date: Apr 18, 2018

Security Advisory Description

A specially crafted request could have crashed the Apache HTTP Server prior to
version 2.4.30, due to an out of bound access after a size limit is reached by
reading the HTTP header. This vulnerability is considered very hard if not
impossible to trigger in non-debug mode (both log and build level), so it is
classified as low risk for common server usage. (CVE-2018-1301)


This vulnerability allows a remote disruption of service.

Security Advisory Status

F5 Product Development has assigned ID 714238 (BIG-IP), ID 714373 (Enterprise
Manager), and ID 431234 (ARX) to this vulnerability. Additionally, BIG-IP
iHealth may list Heuristic H78131906 on the Diagnostics > Identified > Low

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  |13.0.0 -  |None      |          |      |          |
|AFM, Analytics,    |      |13.1.0    |          |          |      |          |
|APM, ASM, DNS, Edge|------+----------+----------|          |      |          |
|Gateway, GTM, Link |12.x  |12.1.0 -  |None      |Low       |3.7   |httpd     |
|Controller, PEM,   |      |12.1.3    |          |          |      |          |
|WebAccelerator,    |------+----------+----------|          |      |          |
|WebSafe)           |11.x  |11.2.1 -  |None      |          |      |          |
|                   |      |11.6.3    |          |          |      |          |
|ARX                |6.x   |6.2.0 -   |None      |Low       |3.7   |httpd     |
|                   |      |6.4.0     |          |          |      |          |
|Enterprise Manager |3.x   |3.1.1     |None      |Low       |3.7   |httpd     |
|                   |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   |5.0.0 -   |None      |          |      |          |
|                   |      |5.1.0     |          |          |      |          |
|Traffix SDC        |------+----------+----------|Low       |3.7   |httpd     |
|                   |4.x   |4.0.5 -   |None      |          |      |          |
|                   |      |4.4.0     |          |          |      |          |

^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.

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.


There is no mitigation. However, this vulnerability is considered very hard if
not impossible to trigger in non-debug mode. If debug log level is required for
httpd, F5 recommends that you enable it only during active troubleshooting and
do not leave debug logging enabled in production on a normal basis.

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