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AUSCERT External Security Bulletin Redistribution
ESB-2016.2286
sol64743453: CGNAT: NAT64 vulnerability CVE-2016-5745
29 September 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP products
Publisher: F5 Networks
Operating System: Network Appliance
Virtualisation
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-5745
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/k/64/sol64743453.html
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sol64743453: CGNAT: NAT64 vulnerability CVE-2016-5745
Security Advisory
Original Publication Date: 09/28/2016
Updated Date: 09/28/2016
Vulnerability Description
BIG-IP devices using CGNAT: NAT64 are vulnerable to an unauthenticated remote
attack that may allow modification of the BIG-IP system configuration.
(CVE-2016-5745)
F5 Technical Support has no additional information about this issue.
Impact
An unauthorized remote attack may allow modification or extraction of the
BIG-IP system configuration files.
Note: This vulnerability was identified during an internal code audit, and
there are no known exploits at this time.
CVSS v3.0 metrics for CVE-2016-5745
CVSS V3 score: 10.0 (base) / 8.7 (temporal)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Note: Due to details unique to CVE-2016-5745, we have included CVSS v3.0
metrics in this article. We have not included CVSS v3.0 metrics in Security
Advisory articles published on AskF5 for other vulnerabilities.
Security Issue Status
F5 Product Development has assigned ID 600662 (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 - 12.1.0 HF1 12.1.1 Critical CGNAT: NAT64
12.0.0 - 12.0.0 HF3 12.1.0 HF2
11.6.1 - 11.6.1 12.0.0 HF4
11.6.0 - 11.6.0 HF7 11.6.1 HF1
11.5.2 - 11.5.4 HF1 11.6.0 HF8
11.5.0 - 11.5.1 HF10 11.5.4 HF2
11.3.0 - 11.4.1 HF10 11.5.1 HF11
11.0.0 - 11.2.1 HF15 11.4.1 HF11
11.2.1 HF16
10.2.1 - 10.2.4
BIG-IP AAM None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
BIG-IP AFM None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
BIG-IP Analytics None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
11.2.1
BIG-IP APM None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
11.2.1
10.2.1 - 10.2.4
BIG-IP ASM None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
11.2.1
10.2.1 - 10.2.4
BIG-IP DNS None 12.0.0 - 12.1.1 Not vulnerable None
BIG-IP Edge Gateway None 11.2.1 Not vulnerable None
10.2.1 - 10.2.4
BIG-IP GTM None 11.4.0 - 11.6.1 Not vulnerable None
11.2.1
10.2.1 - 10.2.4
BIG-IP Link Controller None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
11.2.1
10.2.1 - 10.2.4
BIG-IP PEM None 12.0.0 - 12.1.1 Not vulnerable None
11.4.0 - 11.6.1
BIG-IP PSM None 11.4.0 - 11.4.1 Not vulnerable None
10.2.1 - 10.2.4
BIG-IP WebAccelerator None 11.2.1 Not vulnerable None
10.2.1 - 10.2.4
BIG-IP WOM None 11.2.1 Not vulnerable None
10.2.1 - 10.2.4
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
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
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.
Important: Only virtual servers that have NAT64 enabled are vulnerable.
To verify if your BIG-IP system has a virtual server with NAT64 enabled,
perform the following procedure.
Verifying the NAT64 configuration
Impact of action: Performing the following procedure should not have a
negative impact on your system.
Log in to the command line of the BIG-IP system.
Type the following command to verify the NAT64 configuration setting:
tmsh list ltm virtual all nat64 | grep -B 1 enabled
In the following example, the configuration for a virtual server named
example1 has NAT64 enabled:
ltm virtual example1 {
nat64 enabled
}
Supplemental Information
Common Vulnerability Scoring System v3.0: Specification Document
Note: This link takes you to a resource outside of AskF5. The third party
could remove the document without our knowledge.
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)
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