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AUSCERT External Security Bulletin Redistribution
ESB-2016.2284
sol39508724: TMM SSL/TLS virtual server vulnerability CVE-2016-6907
29 September 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 products
Publisher: F5 Networks
Operating System: Network Appliance
Virtualisation
Impact/Access: Access Privileged Data -- Unknown/Unspecified
Resolution: Patch/Upgrade
CVE Names: CVE-2016-6907
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/k/39/sol39508724.html
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AUSCERT External Security Bulletin Redistribution
sol39508724: TMM SSL/TLS virtual server vulnerability CVE-2016-6907
Security Advisory
Original Publication Date: 09/27/2016
Updated Date: 09/27/2016
Vulnerability Description
TMM SSL/TLS virtual server using CBC cipher may be vulnerable to a "Vaudenay
timing attack" aka 'Padding oracle attack.' (CVE-2016-6907)
The BIG-IP system may be vulnerable to a Padding oracle attack on the
following platforms:
Stratos platforms (2000/4000) are vulnerable with any CBC cipher
(not AES-GCM or RC4).
All non-hardware platforms (virtual edition and cloud) are vulnerable
with any CBC cipher (not AES-GCM or RC4).
Camellia cipher negotiated on Nitrox platforms (Camellia cipher is
always processed in software).
Note: Nitrox platforms can become vulnerable if hardware crypto is
disabled, as software crypto will not use the Nitrox card. For example,
a Common Criteria deployment will disable the Nitrox card and introduce
this vulnerability.
Impact
Attackers may be able to exploit TLS padding and calculate the plaintext
of secure connections.
Security Issue Status
F5 Product Development has assigned ID 580596 (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 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
11.2.1 HF13 - 11.2.1 HF15
10.2.4 HF10 - 10.2.4 HF13
BIG-IP AAM 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
BIG-IP AFM 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
BIG-IP Analytics 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
11.2.1 HF13 - 11.2.1 HF15
BIG-IP APM 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
11.2.1 HF13 - 11.2.1 HF15
10.2.4 HF10 - 10.2.4 HF13
BIG-IP ASM 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
11.2.1 HF13 - 11.2.1 HF15
10.2.4 HF10 - 10.2.4 HF13
BIG-IP DNS 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
12.0.0
BIG-IP Edge Gateway 11.2.1 HF13 - 11.2.1 HF15 11.2.1 HF16 High TMM SSL/TLS
10.2.4 HF10 - 10.2.4 HF13
BIG-IP GTM 11.6.1 11.6.1 HF1 High TMM SSL/TLS
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
11.2.1 HF13 - 11.2.1 HF15
10.2.4 HF10 - 10.2.4 HF13
BIG-IP Link Controller 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
11.2.1 HF13 - 11.2.1 HF15
10.2.4 HF10 - 10.2.4 HF13
BIG-IP PEM 12.1.0 HF1 12.1.1 High TMM SSL/TLS
12.1.0 12.1.0 HF2
12.0.0 HF1 - 12.0.0 HF3 12.0.0 HF4
11.6.1 - 12.0.0 11.6.1 HF1
11.6.0 HF1 - 11.6.0 HF7 11.6.0 HF8
11.6.0 11.5.4 HF2
11.5.4 HF1 11.5.1 HF11
11.5.2 - 11.5.4 11.4.1 HF11
11.5.1 HF6 - 11.5.1 HF10 11.2.1 HF16
11.5.0 HF6 - 11.5.0 HF7
11.4.1 HF6 - 11.4.1 HF10
11.4.0 HF9 - 11.4.0 HF10
BIG-IP PSM 11.4.1 HF6 - 11.4.1 HF10 11.4.1 HF11 High TMM SSL/TLS
11.4.0 HF9 - 11.4.0 HF10 11.2.1 HF16
11.2.1 HF13 - 11.2.1 HF15
10.2.4 HF10 - 10.2.4 HF13
BIG-IP WebAccelerator 11.2.1 HF13 - 11.2.1 HF15 11.2.1 HF16 High TMM SSL/TLS
10.2.4 HF10 - 10.2.4 HF13
BIG-IP WOM 11.2.1 HF13 - 11.2.1 HF15 11.2.1 HF16 High TMM SSL/TLS
10.2.4 HF10 - 10.2.4 HF13
BIG-IP WebSafe None 12.0.0 - 12.1.1 Not vulnerable None
11.6.0 - 11.6.1
ARX None 6.2.0 - 6.4.0 Not vulnerable None
Enterprise Manager None 3.1.1 Not vulnerable None
FirePass None 7.0.0 Not vulnerable None
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 5.0.0 Not vulnerable None
4.6.0
BIG-IQ Cloud and Orchestration None 1.0.0 Not vulnerable None
F5 iWorkflow None 2.0.0 Not vulnerable None
LineRate None 2.5.0 - 2.6.1 Not vulnerable None
Traffix SDC None 5.0.0 Not vulnerable None
4.0.0 - 4.4.0
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.
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 SOL21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow
systems.
Mitigation
For full mitigation, use only non-CBC ciphers, specifically AES-GCM or
RC4. Note that RC4 is also vulnerable to many security issues. Therefore,
to minimize the risk, use AES-GCM ciphers over other ciphers so that
supporting clients do not use CBC ciphers.
Supplemental Information
SOL9970: Subscribing to email notifications regarding F5 products
SOL9957: Creating a custom RSS feed to view new and updated documents
SOL4602: Overview of the F5 security vulnerability response policy
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)
http://www.iacr.org/cryptodb/archive/2002/EUROCRYPT/2850/2850.pdf
Note: This link takes you to a resource outside of AskF5. The third
party could remove the document without our knowledge.
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