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

                               ESB-2020.0328
              TLS/DTLS 'Lucky 13' vulnerability CVE-2013-0169
                              30 January 2020

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

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

Product:           BIG-IP LTM
                   BIG-IP AAM
                   BIG-IP AFM
                   BIG-IP Analytics
                   BIG-IP APM
                   BIG-IP ASM
                   BIG-IP DNS
                   BIG-IP Edge Gateway
                   BIG-IP GTM
                   BIG-IP Link Controller
                   BIG-IP PEM
                   BIG-IP PSM
                   BIG-IP WebAccelerator
                   BIG-IP WOM
                   ARX
                   Enterprise Manager
                   Firepass
                   BIG-IQ Cloud
                   BIG-IQ Device
                   BIG-IQ Security
                   BIG-IQ ADC
                   BIG-IQ Centralized Management
                   BIG-IQ Cloud and Orchestration
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-0169  

Reference:         ESB-2013.0177

Original Bulletin: 
   https://support.f5.com/csp/article/K14190

- --------------------------BEGIN INCLUDED TEXT--------------------

K14190:TLS/DTLS 'Lucky 13' vulnerability CVE-2013-0169

Security Advisory

Original Publication Date: 01 May, 2015

Latest   Publication Date: 25 Jan, 2020

Security Advisory Description

A vulnerability exists in the TLS and DTLS protocols that may allow an attacker
to recover plaintext from TLS/DTLS connections that use CBC-mode encryption. (
CVE-2013-0169)

Note: Stream ciphers, such as RC4, are not vulnerable to this issue.

Impact

The vulnerability may allow an attacker to recover plaintext from TLS/DTLS
connections.

Security Advisory Status

F5 Product Development has assigned ID 580596 and ID 407706 (BIG-IP), ID 594397
(BIG-IQ), ID 594400 Enterprise Manager, ID 410613 (FirePass), and ID 410742
(ARX) to this vulnerability. To find out whether F5 has determined that your
release is vulnerable, and to obtain information about releases, point
releases, or hotfixes that resolve the vulnerability, refer to the following
table.

Note: Subsequent hotfix releases for a given software version listed in
Versions known to be not vulnerable are also not vulnerable, as hotfixes are
cumulative. For example 11.6.1 HF1 is listed as not vulnerable; therefore,
11.6.1 HF2 is also not vulnerable.

+----------------+----------------+------------------+------------------------+
|Product         |Versions known  |Versions known to |Vulnerable component or |
|                |to be vulnerable|be not vulnerable |feature                 |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 14.0.0   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|                |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|BIG-IP LTM      |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |                  |                        |
|                |HF3             |12.1.1 - 14.0.0   |                        |
|                |11.6.1          |12.1.0 HF2        |                        |
|                |11.6.0 - 11.6.0 |12.0.0 HF4        |                        |
|                |HF7             |11.6.1 HF1        |                        |
|                |11.5.2 - 11.5.4 |11.6.0 HF8        |SSL/TLS virtual servers |
|                |HF1             |11.5.4 HF2        |                        |
|                |11.5.1 - 11.5.1 |11.5.1 HF11       |                        |
|                |HF10            |11.4.1 HF11       |                        |
|                |11.4.1 - 11.4.1 |11.2.1 HF16       |                        |
|                |HF10            |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF15            |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |                |                  |None (Configuration     |
|                |None            |11.4.0 - 14.0.0   |utility is not          |
|                |                |                  |vulnerable)             |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|                |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |12.1.1 - 14.0.0   |                        |
|                |HF3             |12.1.0 HF2        |                        |
|BIG-IP AAM      |11.6.1          |12.0.0 HF4        |                        |
|                |11.6.0 - 11.6.0 |11.6.1 HF1        |                        |
|                |HF7             |11.6.0 HF8        |SSL/TLS virtual servers |
|                |11.5.2 - 11.5.4 |11.5.4 HF2        |                        |
|                |HF1             |11.5.1 HF11       |                        |
|                |11.5.1 - 11.5.1 |11.4.1 HF11       |                        |
|                |HF10            |                  |                        |
|                |11.4.1 - 11.4.1 |                  |                        |
|                |HF10            |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |11.4.0 - 14.0.0   |Configuration utility   |
|                |HF1             |11.3.0 HF2        |                        |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|                |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |12.1.1 - 14.0.0   |                        |
|                |HF3             |12.1.0 HF2        |                        |
|BIG-IP AFM      |11.6.1          |12.0.0 HF4        |                        |
|                |11.6.0 - 11.6.0 |11.6.1 HF1        |                        |
|                |HF7             |11.6.0 HF8        |SSL/TLS virtual servers |
|                |11.5.2 - 11.5.4 |11.5.4 HF2        |                        |
|                |HF1             |11.5.1 HF11       |                        |
|                |11.5.1 - 11.5.1 |11.4.1 HF11       |                        |
|                |HF10            |                  |                        |
|                |11.4.1 - 11.4.1 |                  |                        |
|                |HF10            |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 14.0.0   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |Configuration utility   |
|                |HF3             |11.2.0 HF4        |                        |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|                |11.0.0 - 11.0.0 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|BIG-IP Analytics|HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |                  |                        |
|                |HF3             |12.1.1 - 14.0.0   |                        |
|                |11.6.1          |12.1.0 HF2        |                        |
|                |11.6.0 - 11.6.0 |12.0.0 HF4        |                        |
|                |HF7             |11.6.1 HF1        |                        |
|                |11.5.2 - 11.5.4 |11.6.0 HF8        |SSL/TLS virtual servers |
|                |HF1             |11.5.4 HF2        |                        |
|                |11.5.1 - 11.5.1 |11.5.1 HF11       |                        |
|                |HF10            |11.4.1 HF11       |                        |
|                |11.4.1 - 11.4.1 |11.2.1 HF16       |                        |
|                |HF10            |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF15            |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 14.0.0   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|                |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|BIG-IP APM      |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |                  |                        |
|                |HF3             |12.1.1 - 14.0.0   |                        |
|                |11.6.1          |12.1.0 HF2        |                        |
|                |11.6.0 - 11.6.0 |12.0.0 HF4        |                        |
|                |HF7             |11.6.1 HF1        |                        |
|                |11.5.2 - 11.5.4 |11.6.0 HF8        |SSL/TLS virtual servers |
|                |HF1             |11.5.4 HF2        |                        |
|                |11.5.1 - 11.5.1 |11.5.1 HF11       |                        |
|                |HF10            |11.4.1 HF11       |                        |
|                |11.4.1 - 11.4.1 |11.2.1 HF16       |                        |
|                |HF10            |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF15            |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 14.0.0   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|                |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|BIG-IP ASM      |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |                  |                        |
|                |HF3             |12.1.1 - 14.0.0   |                        |
|                |11.6.1          |12.1.0 HF2        |                        |
|                |11.6.0 - 11.6.0 |12.0.0 HF4        |                        |
|                |HF7             |11.6.1 HF1        |                        |
|                |11.5.2 - 11.5.4 |11.6.0 HF8        |SSL/TLS virtual servers |
|                |HF1             |11.5.4 HF2        |                        |
|                |11.5.1 - 11.5.1 |11.5.1 HF11       |                        |
|                |HF10            |11.4.1 HF11       |                        |
|                |11.4.1 - 11.4.1 |11.2.1 HF16       |                        |
|                |HF10            |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF15            |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |                |                  |None (Configuration     |
|BIG-IP DNS      |None            |12.0.0 - 14.0.0   |utility is not          |
|                |                |                  |vulnerable)             |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|BIG-IP Edge     |HF5             |11.0.0 HF5        |                        |
|Gateway         |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |11.3.0          |                  |                        |
|                |11.2.1 - 11.2.1 |11.2.1 HF16       |SSL/TLS virtual servers |
|                |HF15            |                  |                        |
|                |10.2.1 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 11.6.3   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|BIG-IP GTM      |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|                |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 14.0.0   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|                |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|BIG-IP Link     |12.1.0 - 12.1.0 |                  |                        |
|Controller      |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |                  |                        |
|                |HF3             |12.1.1 - 14.0.0   |                        |
|                |11.6.1          |12.1.0 HF2        |                        |
|                |11.6.0 - 11.6.0 |12.0.0 HF4        |                        |
|                |HF7             |11.6.1 HF1        |                        |
|                |11.5.2 - 11.5.4 |11.6.0 HF8        |SSL/TLS virtual servers |
|                |HF1             |11.5.4 HF2        |                        |
|                |11.5.1 - 11.5.1 |11.5.1 HF11       |                        |
|                |HF10            |11.4.1 HF11       |                        |
|                |11.4.1 - 11.4.1 |11.2.1 HF16       |                        |
|                |HF10            |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF15            |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |11.4.0 - 14.0.0   |Configuration utility   |
|                |HF1             |11.3.0 HF2        |                        |
|                +----------------+------------------+------------------------+
|                |12.1.0 - 12.1.0 |                  |                        |
|                |HF1             |                  |                        |
|                |12.0.0 - 12.0.0 |12.1.1 - 14.0.0   |                        |
|                |HF3             |12.1.0 HF2        |                        |
|BIG-IP PEM      |11.6.1          |12.0.0 HF4        |                        |
|                |11.6.0 - 11.6.0 |11.6.1 HF1        |                        |
|                |HF7             |11.6.0 HF8        |SSL/TLS virtual servers |
|                |11.5.2 - 11.5.4 |11.5.4 HF2        |                        |
|                |HF1             |11.5.1 HF11       |                        |
|                |11.5.1 - 11.5.1 |11.4.1 HF11       |                        |
|                |HF10            |                  |                        |
|                |11.4.1 - 11.4.1 |                  |                        |
|                |HF10            |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |11.4.0 - 11.4.1   |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|BIG-IP PSM      |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |11.3.0          |                  |                        |
|                |11.2.1 - 11.2.1 |11.2.1 HF16       |SSL/TLS virtual servers |
|                |HF15            |                  |                        |
|                |10.2.1 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|BIG-IP          |HF5             |11.0.0 HF5        |                        |
|WebAccelerator  |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |11.3.0          |                  |                        |
|                |11.2.1 - 11.2.1 |11.2.1 HF16       |SSL/TLS virtual servers |
|                |HF15            |                  |                        |
|                |10.2.1 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |11.3.0 - 11.3.0 |                  |                        |
|                |HF1             |                  |                        |
|                |11.2.1 - 11.2.1 |                  |                        |
|                |HF3             |11.3.0 HF2        |                        |
|                |11.2.0 - 11.2.0 |11.2.1 HF4        |                        |
|                |HF3             |11.2.0 HF4        |Configuration utility   |
|                |11.1.0 - 11.1.0 |11.1.0 HF6        |                        |
|                |HF5             |11.0.0 HF5        |                        |
|BIG-IP WOM      |11.0.0 - 11.0.0 |10.2.4 HF6        |                        |
|                |HF4             |                  |                        |
|                |10.0.0 - 10.2.4 |                  |                        |
|                |HF4             |                  |                        |
|                +----------------+------------------+------------------------+
|                |11.3.0          |                  |                        |
|                |11.2.1 - 11.2.1 |11.2.1 HF16       |SSL/TLS virtual servers |
|                |HF15            |                  |                        |
|                |10.2.1 - 10.2.4 |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |                |                  |ARX Manager GUI         |
|ARX             |6.0.0 - 6.4.0   |None^1            |                        |
|                |5.0.0 - 5.3.1   |                  |API (disabled by        |
|                |                |                  |default)                |
+----------------+----------------+------------------+------------------------+
|Enterprise      |3.0.0 - 3.1.1   |                  |                        |
|Manager         |2.0.0 - 2.3.0   |None^1            |Configuration utility   |
|                |1.6.0 - 1.8.0   |                  |                        |
+----------------+----------------+------------------+------------------------+
|                |7.0.0           |                  |Administrative interface|
|FirePass        |6.0.0 - 6.1.0   |None^1            |                        |
|                |                |                  |WebServices             |
+----------------+----------------+------------------+------------------------+
|BIG-IQ Cloud    |4.0.0 - 4.5.0   |None^1            |TMM                     |
+----------------+----------------+------------------+------------------------+
|BIG-IQ Device   |4.2.0 - 4.5.0   |None^1            |TMM                     |
+----------------+----------------+------------------+------------------------+
|BIG-IQ Security |4.0.0 - 4.5.0   |None^1            |TMM                     |
+----------------+----------------+------------------+------------------------+
|BIG-IQ ADC      |4.5.0           |None^1            |TMM                     |
+----------------+----------------+------------------+------------------------+
|BIG-IQ          |                |                  |                        |
|Centralized     |5.0.0 - 5.1.0   |5.2.0             |TMM                     |
|Management      |                |                  |                        |
+----------------+----------------+------------------+------------------------+
|BIG-IQ Cloud and|1.0.0           |None^1            |TMM                     |
|Orchestration   |                |                  |                        |
+----------------+----------------+------------------+------------------------+

^1These products and versions have reached end of life.

Security Advisory Recommended Actions

o BIG-IP
  o FirePass
  o Enterprise Manager
  o ARX

BIG-IP

The following section describes affected BIG-IP components and how to protect
those components from potential exploit.

Mitigating the exploit for the MGMT interface and the Configuration utility

The BIG-IP Configuration utility is vulnerable. To mitigate potential
exploit,F5 recommends that you limit network access to the management(MGMT)
interface to a secure, management-only network.

You can change the default cipher string for the BIG-IP Configuration utility.
For example, to change the cipher string for the Configuration utility to use
the RC4-SHA cipher, refer to the following commands:

BIG-IP 10.x - 11.x

tmsh modify /sys httpd ssl-ciphersuite RC4-SHA

Mitigating the exploit for SSL/TLS virtual servers

Tomitigate potential exploit for SSL/TLS virtual servers, you can configure the
SSL profile to prefer non-CBC ciphers. To do so, perform the following steps:

Impact of workaround: Changing the ciphers supported by the SSL profile may
result in clients being unable to establish an SSL connection.

 1. Log in to the Configuration utility.
 2. Navigate to Local Traffic > Profiles.
 3. In the SSL list, choose Client.
 4. Click Create.
 5. Type a name for the SSL profile.
 6. In the Parent Profile list, choose clientssl.
 7. In the Configuration list, choose Advanced.
 8. Click the Custom box for Ciphers.
 9. From the Ciphers box, delete the DEFAULT cipher string.
10. In the Ciphers box, enter the desired cipher string.

    For BIG-IP 11.5.0 and later, configure the cipher string to prefer non-CBC
    ciphers. For example, the following string configures the SSL profile to
    prefer AES-GCM ciphers first, then RC4-SHA ciphers, before resorting to the
    DEFAULT string, which contains CBC ciphers:

    AES-GCM:RC4-SHA:DEFAULT

    For BIG-IP 11.4.0 and earlier, the following cipher string configures the
    SSL profile to prefer RC4-SHA before resorting to the DEFAULT string, which
    contains CBC ciphers:

    RC4-SHA:DEFAULT

11. Click Finished.
12. You must now associate the SSL profile with the virtual server.

FirePass

To protect the FirePass Controller Administrator interface from potential
exploit, perform the following procedure:

Changing the cipher string for the FirePass Administrator interface

Impact of procedure: Changing the cipher string may prevent some connections to
the Administrator interface.

 1. Log in to the FirePass Administrator interface.
 2. Navigate to Device Management > Security > User Access Security page > SSL
    Cipher Security.
 3. Click Medium-Grade Security.
 4. Click Apply.

Enterprise Manager

To protect the Enterprise Manager Configuration utility from potential exploit,
F5 recommends that you limit network access to the MGMTinterface to a secure,
management-only network.

You can also change the default cipher string for the Enterprise Manager
Configuration utility. For example, to change the cipher string for the
Configuration utility to use the RC4-SHA cipher, refer to the following
commands:

Enterprise Manager 3.x

tmsh modify /sys httpd ssl-ciphersuite RC4-SHA

Enterprise Manager 2.x

bigpipe httpd sslciphersuite RC4-SHA

ARX

The following section describes how to protect the ARX Manager GUI from
potential exploit (6.2.0 and later).

Changing the ARX Manager GUI cipher string (6.2.0 and later)

Impact of procedure: Changing the cipher string may prevent some connections to
the ARX Manager GUI.

 1. Log in to the ARX CLI.
 2. Enable privileged mode by typing the following command:

    enable

 3. Enable config mode by typing the following command:

    config

 4. Enter ssl mode by typing the following command:

    ssl

 5. Change the cipher string by typing the following command

    cipher ssl-rsa-with-rc4-128-sha

 6. Exit the menu by typing the following command:

    end

Acknowledgements

F5 would like to acknowledge Nadhem J. AlFardan and Kenneth G. Paterson of the
Information Security Group Royal Holloway, University of London for bringing
this issue to our attention, and for following the highest standards of
responsible disclosure.

Supplemental Information

o http://www.isg.rhul.ac.uk/tls/

    Note: This link takes you to a resource outside of AskF5, and it is
    possible that the document may be removed without our knowledge.

  o K8802: Using SSL ciphers with BIG-IP Client SSL and Server SSL profiles
  o K13405: Restricting Configuration utility access to clients using high
    encryption SSL ciphers (11.x)
  o K6768: Restricting Configuration utility access to clients using high
    encryption SSL ciphers (9.x - 10.x)
  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents
  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 matrix
  o K10322: FirePass hotfix matrix
  o K12766: ARX hotfix matrix

- --------------------------END INCLUDED TEXT--------------------

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