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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.2264
NGINX Controller multiple vulnerabilities
2 July 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: NGINX Controller
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Provide Misleading Information -- Existing Account
Access Confidential Data -- Existing Account
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-5911 CVE-2020-5910 CVE-2020-5909
Original Bulletin:
https://support.f5.com/csp/article/K31150658
https://support.f5.com/csp/article/K84084843
https://support.f5.com/csp/article/K59209532
Comment: This bulletin contains three (3) F5 Networks security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
K31150658:NGINX Controller vulnerability CVE-2020-5909
Security Advisory
Original Publication Date: 02 Jul, 2020
Security Advisory Description
When users run the command displayed in NGINX Controller user interface (UI) to
fetch the agent installer, the server TLS certificate is not verified. (
CVE-2020-5909)
Impact
A man-in-the-middle (MITM) attacker can intercept the communication channel and
read/modify data in transit.
Security Advisory Status
F5 Product Development has assigned IND-4166 (NGINX Controller) 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, point 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 |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |15.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |14.x |None |Not | | | |
|BIG-IP (LTM, AAM, | | |applicable| | | |
|AFM, Analytics, +------+----------+----------+ | | |
|APM, ASM, DNS, FPS,|13.x |None |Not |Not |None |None |
|GTM, Link | | |applicable|vulnerable| | |
|Controller, PEM) +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
| |3.x |3.0.0 - |3.6.0 | | | |
| | |3.5.0 | | | | |
| +------+----------+----------+ | |NGINX |
|NGINX Controller |2.x |2.0.0 - |None |Medium |4.2 |Controller|
| | |2.9.0 | | | | |
| +------+----------+----------+ | | |
| |1.x |1.0.1 |None | | | |
+-------------------+------+----------+----------+----------+------+----------+
^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.
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
To mitigate this vulnerability, you can remove the option that skips server TLS
certificate verification before running the command. For wget, remove the
- --no-check-certificate option from the command. For curl, remove the -k option
from the command.
Supplemental Information
o Support for NGINX Open Source and NGINX Plus
o K9957: Creating a custom RSS feed to view new and updated documents
- --------------------------------------------------------------------------------
K84084843:NGINX Controller installer vulnerability CVE-2020-5911
Security Advisory
Original Publication Date: 02 Jul, 2020
Security Advisory Description
The NGINX Controller installer starts the download of Kubernetes packages from
an HTTP URL On Debian/Ubuntu system. (CVE-2020-5911)
Impact
A man-in-the-middle (MITM) attacker can use this vulnerability to intercept the
insecure HTTP channel and convincingly forge Kubernetes packages and get the
malicious packages installed on the NGINX Controller.
Security Advisory Status
F5 Product Development has assigned IND-11771 (NGINX Controller) 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, point 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 |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |15.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |14.x |None |Not | | | |
|BIG-IP (LTM, AAM, | | |applicable| | | |
|AFM, Analytics, +------+----------+----------+ | | |
|APM, ASM, DNS, FPS,|13.x |None |Not |Not |None |None |
|GTM, Link | | |applicable|vulnerable| | |
|Controller, PEM) +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
| |3.x |3.0.0 - |3.6.0 | | | |
| | |3.5.0 | | | | |
| +------+----------+----------+ | |NGINX |
|NGINX Controller |2.x |2.8.0 - |None |Medium |5.6 |Controller|
| | |2.9.0 | | | |installer |
| +------+----------+----------+ | | |
| |1.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
^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.
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
To mitigate this vulnerability, you can manually configure the Kubernetes
repositories and install the kubectl, kubeadm and kubelet packages (all at
version 1.15.5) prior to installing NGINX Controller. For more information
about manually configuring the repository and installing Kubernetes, refer to
the Installing kubectl, kubeadm and kubelet guide from the Kubernetes
Documentation site.
Note: These links take you to resources outside of AskF5, and it is possible
that the documents may be removed without our knowledge.
Supplemental Information
o Support for NGINX Open Source and NGINX Plus
o K9957: Creating a custom RSS feed to view new and updated documents
- --------------------------------------------------------------------------------
K59209532:NGINX Controller NATS vulnerability CVE-2020-5910
Security Advisory
Original Publication Date: 02 Jul, 2020
Security Advisory Description
The Neural Autonomic Transport System (NATS) messaging services in use by the
NGINX Controller do not require any form of authentication, so any successful
connection would be authorized. (CVE-2020-5910)
Impact
A malicious user with access to the host where NGINX Controller is running on
may eavesdrop on NATS connections and, thereby, gain unauthorized access data
stored in the message queue.
Security Advisory Status
F5 Product Development has assigned IND-6404 (NGINX Controller) 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, point 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 |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |15.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |14.x |None |Not | | | |
|BIG-IP (LTM, AAM, | | |applicable| | | |
|AFM, Analytics, +------+----------+----------+ | | |
|APM, ASM, DNS, FPS,|13.x |None |Not |Not |None |None |
|GTM, Link | | |applicable|vulnerable| | |
|Controller, PEM) +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
| |3.x |3.0.0 - |3.6.0 | | | |
| | |3.5.0 | | | |NGINX |
| +------+----------+----------+ | |controller|
|NGINX Controller |2.x |2.0.0 - |None |Medium |6.5 |NATS |
| | |2.9.0 | | | |messaging |
| +------+----------+----------+ | |service |
| |1.x |1.0.1 |None | | | |
+-------------------+------+----------+----------+----------+------+----------+
^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.
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
To mitigate this vulnerability, ensure that only trusted users have access to
the host on which NGINX controller is running.
Supplemental Information
o Support for NGINX Open Source and NGINX Plus
o K9957: Creating a custom RSS feed to view new and updated documents
- --------------------------END INCLUDED TEXT--------------------
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