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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.0825
                K52180214: MCPD vulnerability CVE-2016-7474
                               28 March 2017

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

Product:           F5 BIG-IP Products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-7474  

Original Bulletin: 
   https://support.f5.com/csp/article/K52180214

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K52180214: MCPD vulnerability CVE-2016-7474

Security Advisory

Original Publication Date: Mar 24, 2017

Updated Date: Mar 24, 2017

Security Advisory Description

In some cases the MCPD binary cache may allow a user with Advanced Shell
access, or privileges to generate a qkview, to temporarily obtain normally
unrecoverable information. (CVE-2016-7474)

Impact

A local user may have access to sensitive data such as passwords for
recently created local user accounts and passphrases that have been set
since the last reboot.

Security Advisory Status

F5 Product Development has assigned ID 601938 and 601927 (BIG-IP) to this
vulnerability.

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:

Product                         Versions known to be vulnerable    Versions known to be not vulnerable    Severity        Vulnerable component or feature
BIG-IP LTM                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                11.2.1                             12.1.1 HF1
				                                   11.6.1 HF1
				       				   11.5.4 HF3

BIG-IP AAM                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                                                   12.1.1 HF1
					                           11.6.1 HF1
                                   				   11.5.4 HF3

BIG-IP AFM                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                                                   12.1.1 HF1
                                                                   11.6.1 HF1
                                                                   11.5.4 HF3

BIG-IP Analytics                12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                11.2.1                             12.1.1 HF1
                     				                   11.6.1 HF1
					                           11.5.4 HF3

BIG-IP APM                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                11.2.1                             12.1.1 HF1
			                                           11.6.1 HF1
								   11.5.4 HF3

BIG-IP ASM                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                11.2.1                             12.1.1 HF1
                                                                   11.6.1 HF1
                  						   11.5.4 HF3

BIG-IP DNS                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                                                   12.1.2
							           12.1.1 HF1

BIG-IP Edge Gateway             11.2.1                             None                                   Medium          MCPD

BIG-IP GTM                      11.4.0 - 11.6.1                    11.6.1 HF1                             Medium          MCPD
                                11.2.1                             11.5.4 HF3

BIG-IP Link Controller          12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                11.2.1                             12.1.1 HF1
					                           11.6.1 HF1
								   11.5.4 HF3

BIG-IP PEM                      12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.4.0 - 11.6.1                    12.1.2
                                                                   12.1.1 HF1
								   11.6.1 HF1
								   11.5.4 HF3

BIG-IP PSM                      11.4.0 - 11.4.1                    None                                   Medium          MCPD

BIG-IP WebAccelerator           11.2.1                             None                                   Medium          MCPD

BIG-IP WebSafe                  12.0.0 - 12.1.1                    13.0.0                                 Medium          MCPD
                                11.6.0 - 11.6.1                    12.1.2
                                                                   12.1.1 HF1
								   11.6.1 HF1

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 Versions known to be not vulnerable 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.

To determine the necessary upgrade path for your BIG-IQ system, you should
understand the BIG-IQ product offering name changes. For more information,
refer to K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow
systems.

Mitigation

To partially mitigate this vulnerability, you can force the mcpd process
to reload the configuration. To force the mcpd process to reload the
configuration, refer to K13030: Forcing the mcpd process to reload the
BIG-IP configuration.

Impact of action: Forcing the mcpd process to reload the configuration
requires rebooting the BIG-IP system, which disrupts traffic processing
until the system is back up.

Acknowledgements

F5 would like to acknowledge Michael Molho of e-Xpert Solutions SA for
bringing this issue to our attention, and for following the highest
standards of responsible disclosure.

Supplemental Information

    K9970: Subscribing to email notifications regarding F5 products
    K9957: Creating a custom RSS feed to view new and updated documents
    K4602: Overview of the F5 security vulnerability response policy
    K4918: Overview of the F5 critical issue hotfix policy
    K167: Downloading software and firmware from F5
    K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
    K9502: BIG-IP hotfix matrix

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