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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4306 TLS 1.3 vulnerability CVE-2019-6659 15 November 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 BIG-IP products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-6659 Original Bulletin: https://support.f5.com/csp/article/K34450231 - --------------------------BEGIN INCLUDED TEXT-------------------- K34450231:TLS 1.3 vulnerability CVE-2019-6659 Security Advisory Original Publication Date: 15 Nov, 2019 Security Advisory Description BIG-IP virtual servers with TLS 1.3 enabled may experience a denial-of-service (DoS) due to undisclosed incoming messages. (CVE-2019-6659) Impact BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator) Undisclosed messages sent to a TLS 1.3-enabled virtual server may cause a denial-of-service (DoS). This issue impacts only the data plane. There is no impact on the control plane. BIG-IQ Centralized Management, Enterprise Manager, F5 iWorkflow, and Traffix SDC There is no impact; these F5 products are not affected by this vulnerability. Security Advisory Status F5 Product Development has assigned ID 752985 (BIG-IP) 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 |15.0.0 | | | | | +------+----------+----------+ | | | | |14.x |14.0.0 - |14.1.0.2 | | | | |BIG-IP (LTM, AAM, | |14.1.0.1 | | | | | |AFM, Analytics, +------+----------+----------+ | | | |APM, ASM, DNS, Edge|13.x |None |Not | | | | |Gateway, FPS, GTM, | | |applicable|High |7.5 |TMM | |Link Controller, +------+----------+----------+ | | | |PEM, |12.x |None |Not | | | | |WebAccelerator) | | |applicable| | | | | +------+----------+----------+ | | | | |11.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ |Enterprise Manager |3.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ | |7.x |None |Not | | | | | | | |applicable| | | | | +------+----------+----------+ | | | |BIG-IQ Centralized |6.x |None |Not |Not |None |None | |Management | | |applicable|vulnerable| | | | +------+----------+----------+ | | | | |5.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ |F5 iWorkflow |2.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ |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. 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 None Supplemental Information o K51812227: Understanding Security Advisory versioning o K41942608: Overview of Security Advisory articles o K4602: Overview of the F5 security vulnerability response policy 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 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 - --------------------------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 iQIVAwUBXc32lmaOgq3Tt24GAQjdDxAAmzA+VCII7Muy0y65pg+wEjrJ9WHeoGWz OKpyRBikSnh3m3Ht/XDpmxSADiSH+1aV6Bi6DJxm5WXMHosLZCnP+nFPt0zdllUg Nh1cbPee0n/+aF+Z1AqvdV9eOZdKaJZ8HnISE9tn25fVxqdsU9TLn+gtfJ/Ji1Jr TgtOtLunPZTGeXXz8Dr01Wb4XkftrL1QTBQoy4XfbHVCYUBvKU8xdRhlBPrKF16I GBsqWI5dxEWADm5g8mJFKYIljVzg7vV3qXNs/pORX8nEPPlvwQJq/yzau1EMtlMs Zrzw/eKBRQ989XJeReuyZoGz4W/iSEJnebIPaRUVeskbLXuVrrRt16jLXten041L FNOUB2P/ET4Lu/6eCY/Bs092WZOs04ZmZHnvNpgNoLraI0KWgVpy9M3EOPl+MHFh 6MV0tD/M5GCCn83Jyfnl2tFxIlJvT6iiIFR5lB912W9pTS/Me6xjmFhil/TI3V+1 7KuXblSvRyWHSuxKWl+2hUjqGrqOgon+vMjPSDVjsE9Mr8P5wzfsTGIrPGBdugHo Dn2PESodZ6Kfbn8kDT+cknympI1i9oNg6+mPjjTiXyiOwL5m08U7dmuXJaQXQxkt A9dM6N2XoI0HINb4T3PLO9GzgQeUM+i5BQ4Et3T276b6bC3RIbZns/2HecoPnpCr K78FXJfMJ24= =BR2f -----END PGP SIGNATURE-----