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

                               ESB-2016.1428
            sol48042976: BIG-IP SSL vulnerability CVE-2016-4545
                                7 June 2016

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

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

Product:           F5 BIG-IP products
Publisher:         F5 Networks
Operating System:  Network Appliance
                   Virtualisation
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-4545  

Original Bulletin: 
   https://support.f5.com/kb/en-us/solutions/public/k/48/sol48042976.html

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sol48042976: BIG-IP SSL vulnerability CVE-2016-4545

Security Advisory

Original Publication Date: 12/16/2015

Updated Date: 06/03/2016

Vulnerability Description

On virtual servers with Secure Sockets Layer (SSL) profiles enabled, an SSL 
alert sent during the handshake may produce unnecessary logging and resource 
consumption on a BIG-IP system that is running 11.5.4 FINAL, possibly causing
the Traffic Management Microkernel (TMM) to restart and produce a core file. 
(CVE-2016-4545)

Impact

When a Secure Sockets Layer (SSL) alert is sent during the handshake on a 
BIG-IP 11.5.4 base, the TMM may restart and produce a core file while logging
SSL 'codec alert' messages to the /var/log/ltm file. The messages appear 
similar to the following example:

warning tmm[32354]: 01260009:4: Connection error: hud_ssl_handler:1131: codec alert (20)

Security Issue Status

F5 Product Development has assigned ID 518275 (BIG-IP) to this vulnerability,
and has evaluated the currently supported releases for potential 
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                      11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.0.0 - 11.5.3
								   10.2.1 - 10.2.4
BIG-IP AAM                      11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.4.0 - 11.5.3
BIG-IP AFM                      11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.3.0 - 11.5.3
BIG-IP Analytics                11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.0.0 - 11.5.3
BIG-IP APM                      11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.0.0 - 11.5.3
								   10.2.1 - 10.2.4
BIG-IP ASM                      11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.0.0 - 11.5.3
								   10.2.1 - 10.2.4
BIG-IP DNS                      None                               12.0.0 - 12.1.0                        Not vulnerable  None
BIG-IP Edge Gateway             None                               11.0.0 - 11.3.0                        Not vulnerable  None
                                                                   10.1.0 - 10.2.4
BIG-IP GTM                      11.5.4                             11.6.0 - 11.6.1                        High            Virtual servers with SSL profile enabled
                                                                   11.5.4 HF1
								   11.0.0 - 11.5.3
								   10.2.1 - 10.2.4
BIG-IP Link Controller          11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.0.0 - 11.5.3
								   10.2.1 - 10.2.4
BIG-IP PEM                      11.5.4                             12.0.0 - 12.1.0                        High            Virtual servers with SSL profile enabled
                                                                   11.6.0 - 11.6.1
								   11.5.4 HF1
								   11.3.0 - 11.5.3
BIG-IP PSM                      None                               11.0.0 - 11.4.1                        Not vulnerable  None
                                                                   10.1.0 - 10.2.4
BIG-IP WebAccelerator           None                               11.0.0 - 11.3.0                        Not vulnerable  None
                                                                   10.1.0 - 10.2.4
BIG-IP WOM                      None                               11.0.0 - 11.3.0                        Not vulnerable  None
                                                                   10.1.0 - 10.2.4
ARX                             None                               6.0.0 - 6.4.0                          Not vulnerable  None
Enterprise Manager              None                               3.0.0 - 3.1.1                          Not vulnerable  None
FirePass                        None                               7.0.0                                  Not vulnerable  None
                                                                   6.0.0 - 6.1.0
BIG-IQ Cloud                    None                               4.0.0 - 4.5.0                          Not vulnerable  None
BIG-IQ Device                   None                               4.2.0 - 4.5.0                          Not vulnerable  None
BIG-IQ Security                 None                               4.0.0 - 4.5.0                          Not vulnerable  None
BIG-IQ ADC                      None                               4.5.0                                  Not vulnerable  None
BIG-IQ Centralized Management   None                               4.6.0                                  Not vulnerable  None
BIG-IQ Cloud and Orchestration  None                               1.0.0                                  Not vulnerable  None
LineRate                        None                               2.5.0 - 2.6.1                          Not vulnerable  None
F5 MobileSafe                   None                               1.0.0                                  Not vulnerable  None
F5 WebSafe                      None                               1.0.0                                  Not vulnerable  None
Traffix SDC                     None                               5.0.0                                  Not vulnerable  None
                                                                   4.0.0 - 4.4.0
								   3.3.2 - 3.5.1

Vulnerability 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.

F5 responds to vulnerabilities in accordance with the Severity values 
published in the previous table. The Severity values and other security 
vulnerability parameters are defined in SOL4602: Overview of the F5 security 
vulnerability response policy.

Supplemental Information

    SOL9970: Subscribing to email notifications regarding F5 products

    SOL9957: Creating a custom RSS feed to view new and updated documents

    SOL4918: Overview of the F5 critical issue hotfix policy

    SOL167: Downloading software and firmware from F5

    SOL13123: Managing BIG-IP product hotfixes (11.x - 12.x)

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