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AUSCERT External Security Bulletin Redistribution
ESB-2019.4310
BIG-IP / BIG-IQ / Enterprise Manager / F5 iWorkflow
Configuration utility vulnerability CVE-2019-6663
15 November 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2019-6663
Original Bulletin:
https://support.f5.com/csp/article/K76052144
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K76052144:BIG-IP / BIG-IQ / Enterprise Manager / F5 iWorkflow Configuration utility vulnerability CVE-2019-6663
Security Advisory
Original Publication Date: 15 Nov, 2019
Security Advisory Description
The BIG-IP / BIG-IQ / Enterprise Manager / F5 iWorkflow Configuration utility
is vulnerable to Anti DNS Pinning (DNS Rebinding) attack. (CVE-2019-6663)
Impact
BIG-IP / BIG-IQ / Enterprise Manager / F5 iWorkflow
An Anti DNS Pinning (DNS Rebinding) attack allows an attacker to manipulate the
correspondence between an IP address and a fully qualified domain name (FQDN)
with the purpose of initializing active content within the trust relationship
with the vulnerable site. The vulnerability is that the Configuration utility
does not sufficiently verify the Host field in the HTTP request. The
Configuration utility fails to return an error if the received request includes
an arbitrary address in the Host field, and instead continues to process the
request. An attacker initiating a DNS rebinding attack requires control of the
DNS that is configured in a client that accesses the Configuration utility of
the vulnerable system.
Traffix SDC
There is no impact; this F5 product is not affected by this vulnerability.
Security Advisory Status
F5 Product Development has assigned ID 407512 (BIG-IP, BIG-IQ, Enterprise
Manager, and F5 iWorkflow) to this vulnerability.
To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. 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. For more information
about security advisory versioning, refer to K51812227: Understanding Security
Advisory versioning.
+----------------+------+----------+----------+----------+------+-------------+
| | |Versions |Fixes | |CVSSv3|Vulnerable |
|Product |Branch|known to |introduced|Severity |score^|component or |
| | |be |in | |1 |feature |
| | |vulnerable| | | | |
+----------------+------+----------+----------+----------+------+-------------+
| |15.x |15.0.0 - |None | | | |
| | |15.0.1^2 | | | | |
| +------+----------+----------+ | | |
|BIG-IP (LTM, |14.x |14.0.0 - |None | | | |
|AAM, AFM, | |14.1.2^2 | | | | |
|Analytics, APM, +------+----------+----------+ | | |
|ASM, DNS, Edge |13.x |13.0.0 - |None |Low |3.3 |Configuration|
|Gateway, FPS, | |13.1.3^2 | | | |utility |
|GTM, Link +------+----------+----------+ | | |
|Controller, PEM,|12.x |12.1.0 - |None | | | |
|WebAccelerator) | |12.1.5^2 | | | | |
| +------+----------+----------+ | | |
| |11.x |11.5.2 - |None | | | |
| | |11.6.5^2 | | | | |
+----------------+------+----------+----------+----------+------+-------------+
|Enterprise |3.x |3.1.1^2 |None |Low |3.3 |Configuration|
|Manager | | | | | |utility |
+----------------+------+----------+----------+----------+------+-------------+
| |7.x |7.0.0^2 |None | | | |
| +------+----------+----------+ | |Configuration|
|BIG-IQ |6.x |6.0.0 - |None | | |utility / |
|Centralized | |6.1.0^2 | |Low |3.3 |User |
|Management +------+----------+----------+ | |Interface |
| |5.x |5.2.0 - |None | | | |
| | |5.4.0^2 | | | | |
+----------------+------+----------+----------+----------+------+-------------+
|F5 iWorkflow |2.x |2.3.0^2 |None |Low |3.3 |Configuration|
| | | | | | |utility |
+----------------+------+----------+----------+----------+------+-------------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+----------------+------+----------+----------+----------+------+-------------+
^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
^2F5 will not develop a fix for vulnerable products that do not already have a
fixed version listed in this article, and will not update this table with
subsequent vulnerable releases in the associated branches. For more
information, refer to K4602: Overview of the F5 security vulnerability response
policy.
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 Fixes introduced in 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.
Mitigation
As the Configuration utility is accessible only over Transport Layer Security
(TLS), the use of a valid, signed TLS server certificate for the Configuration
utility will show a server certificate validation error to the browser. If the
affected system does not use a valid server certificate, the user will have to
accept the validation bypass in the browser. If the Configuration utility is
accessed by way of an IP address instead of through the FQDN, then this attack
is not relevant.
Supplemental Information
o K51812227: Understanding Security Advisory versioning
o K41942608: Overview of Security Advisory articles
o K4918: Overview of the F5 critical issue hotfix policy
o K9502: BIG-IP hotfix and point release matrix
o K13123: Managing BIG-IP product hotfixes (11.x - 15.x)
o K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix and point release matrix
o K167: Downloading software and firmware from F5
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
o K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems
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