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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== 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-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXv0lc+NLKJtyKPYoAQhb/w/6A3W4NcqQi5hOrOX/gkqZ+JrIm0uInd6z lX4RS+NcJZysFSVoAggisu2UYA/oOnIa4NKH94wL9E79TSEUVQDHJjpeVcrqfEQA IBpxk9s5M0RiT00jzXID4T1k5wFyu/7su0IipdeDdo1w2uO2FGiHq73tpZJACqpO bH0vGUCMoksQhbcY1BgsbbDLtgRRH80loiusAW6/47ekB77dL/GI8UK8Qfn7fwFT 6sjgxxPZftCxHtf4moKPDotz0ZTI9eYWOMFYzZ2Kv6r4tW7M5LOYKV4Xjx2j5oA4 KapbynVbl/VT/AFOFAI5PwOIE7YTELZ9BjuLghsGUuN/TnXoCTcrPiN49C1Rg7s4 yqtS4M7xyO3eXQJdxyJI8YfNoPGiexpudylst3jFFA05RxyCQ0fwe4RnrG+JuwQk RaAy5sW7Cv9BbHPqDJOYUpGtMgOlgrh7+cLScbnXqFnwS5vCXLgEJfJp502UUJt6 JsV1AgdIvQUzn9ZKaA4xhS610YyYXoI1BrmZ8MWwCDKcyEDwhFlKYz2K2aBSC3B1 wAbcYwCEbbz5/NTW0hakKJPbA71mAulH/pIZKyxNryG4kTe1487CpQMtwsm7hj0k 1b19ZO1saAuPb9PkDv1QBmwXV/UdANvawsZc6pqN2HFBsarm0e/kqLZFnbvuzhbA XZJ5gd3GNFI= =NlsF -----END PGP SIGNATURE-----