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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3726.2 OpenSSL and Intel processor SMT side-channel vulnerability 29 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 BIG-IP Products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Access Privileged Data -- Existing Account Resolution: Mitigation CVE Names: CVE-2018-5407 Reference: ESB-2018.3639 ESB-2018.3631 ESB-2018.3545 Original Bulletin: https://support.f5.com/csp/article/K49711130 Revision History: May 29 2019: Added 15.x branch November 30 2018: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- K49711130:OpenSSL and Intel processor SMT side-channel vulnerability (PortSmash) CVE-2018-5407 Security Advisory Original Publication Date: 30 Nov, 2018 Latest Publication Date: 29 May, 2019 Security Advisory Description Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention.' (CVE-2018-5407 also known as PortSmash) Impact The vulnerability allows an attacker who can provide and run binary code of their choosing on the F5 platform to steal secret cryptographic information. Processes running on hyperthread-enabled cores are subject to a side-channel attack by other processes running on the same core, if their program control flow is impacted by private data. A common case for this behavior is encryption, where the secret key can influence program flow. While high-security contexts typically guard against this known behavior, a flaw in OpenSSL's protection of elliptic curve processing is vulnerable to this class of attack. Other encryption algorithms (RSA) are not affected, so configurations that do not install EC keys are not impacted. Note: Hyper-threading is Intel's implementation of SMT. Security Advisory Status F5 Product Development has assigned IDs 751143 and 751152 (BIG-IP), ID 751143-7 (BIG-IQ Centralized Management), ID 751143-8 (F5 iWorkflow), ID 751143-9 (Enterprise Manager), and CPF-25013 and CPF-25014 (Traffix) 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 |None |15.0.0 | | | | | +------+----------+----------+ | | | |BIG-IP (LTM, |14.x |14.0.0 - |None | | |OpenSSL EC | |AAM, AFM, | |14.1.0 | | | |algorithm (LTM | |Analytics, APM, +------+----------+----------+ | |SSL profiles, | |ASM, DNS, Edge |13.x |13.0.0 - |None | | |iApps LX, | |Gateway, FPS, | |13.1.1 | |Medium |5.3 |iRules LX, | |GTM, Link +------+----------+----------+ | |big3d, | |Controller, PEM,|12.x |12.1.0 - |None | | |Configuration | |WebAccelerator) | |12.1.3 | | | |utility), CPU | | +------+----------+----------+ | | | | |11.x |11.2.1 - |None | | | | | | |11.6.3 | | | | | +----------------+------+----------+----------+--------+------+---------------+ |Enterprise |3.x |3.1.1 |None |Medium |5.3 |OpenSSL EC | |Manager | | | | | |algorithm, CPU | +----------------+------+----------+----------+--------+------+---------------+ | |6.x |6.0.0 - |None | | | | |BIG-IQ | |6.0.1 | | | |OpenSSL EC | |Centralized +------+----------+----------+Medium |5.3 |algorithm, CPU | |Management |5.x |5.0.0 - |None | | | | | | |5.4.0 | | | | | +----------------+------+----------+----------+--------+------+---------------+ |F5 iWorkflow |2.x |2.3.0 |None |Medium |5.3 |OpenSSL EC | | | | | | | |algorithm, CPU | +----------------+------+----------+----------+--------+------+---------------+ | |5.x |5.0.0 - |None | | | | |Traffix SDC | |5.1.0 | |Medium |4.8 |OpenSSL EC | | +------+----------+----------+ | |algorithm, CPU | | |4.x |4.4.0 |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. Vulnerable platforms BIG-IP o Virtual Edition The following platforms when vCMP guests are deployed: o VIPRION B2100 o VIPRION B2150 o VIPRION B2250 o VIPRION B4200 o VIPRION B4300 blade in the 4400(J100) 4-slot chassis o VIPRION B4300 blade in the 4480(J102) 4-slot chassis o VIPRION B4300 blade in the 4800(S100) 8-slot chassis o VIPRION B4450 blade in the 4480(J102) 4-slot chassis o VIPRION B4450 blade in the 4800(S100) 8-slot chassis o BIG-IP 5200v o BIG-IP 5250v o BIG-IP 7200v o BIG-IP 7250v o BIG-IP 7255v o BIG-IP 10200v o BIG-IP 10250v o BIG-IP 10350v o BIG-IP 12250v o BIG-IP i5800 o BIG-IP i5820-DF (FIPS) o BIG-IP i7800 o BIG-IP i7820-DF (FIPS) o BIG-IP i10800 o BIG-IP i11400-DS, i11600-DS, i11800-DS o BIG-IP i11800 o BIG-IP i15800 BIG-IQ, F5 iWorkflow, Enterprise Manager, and Traffix o Virtual Edition/Virtual Platform 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 the vulnerability in multi-tenancy BIG-IP Virtual Clustered Multiprocessing (vCMP) configurations, ensure that all guests are set to at least two Cores Per Guest. Similarly, VE systems can be protected if the hypervisor ensures that potentially hostile co-guests cannot be scheduled on the same physical CPU. 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 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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXO25o2aOgq3Tt24GAQgNvRAAobcHKbGPId7QizSEmI6iX1+U7g8+Tubj Ccbl+qQxR0Ismyzla+eg/oJac6Khcp8shazaoFXZM9xx/yBvI7vAfUPNJUA4j9Cw 9bqcSeuUU725NJvmWj70tG0nIkXL55ZmVtitH633hDlKGyseyUda9LK7eCqy/anX iy0nap6WDk6Wfw3kTWL4lHxIAMTK9+OVQf/Bt7MwwOz7UGQ0RCQH12AFCCKeMD4J 9PhyJmGSquGuQe/3ebBo4PTs3OgIcDckqhoiTblUaxXvzawI1goovhyyzrcjFTap 9qns9GDNmIZg6uBbFyZWuFD4Ea902ywTVj79ZFRBcMvtKAPu0zhFJ0eaQxgO9d30 DFNdjX6vWB+ifM2sT14PnLVHuZ0kaPBInDD46DIJqQNC/O+u7af9gOQPuDVJMRuW PK7xs23yyp4sw9QnPQss0+NevKsb9XnnnLsg4fukZ8yOao/XnBfJC245hQYlHY3D PTHz+/Om/9K5Q1VBEI19+Vc+Ht+gHpN1FmS4qSdinYjc9S4zX4VL2SGuB+MTqG7X kYjaIXOcs04ZUgV5uwHDFPLGepCU5Kh8kj9vlV6jmtTEbP8UrqpOV0EBfw2uwUJT cucRqGu1dgu5xyrOcFh1QzMwoG9MRveyT8VzbxOKL9i0rxul16I83k9vvDvRtAQk EeDaZCba7IM= =PcuQ -----END PGP SIGNATURE-----