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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2468 sol55672042: Linux kernel vulnerability CVE-2016-4470 24 October 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 Products Publisher: F5 Networks Operating System: Network Appliance Virtualisation Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-4470 Reference: ESB-2016.2438 ESB-2016.2008 ESB-2016.1616 Original Bulletin: https://support.f5.com/kb/en-us/solutions/public/k/55/sol55672042.html - --------------------------BEGIN INCLUDED TEXT-------------------- sol55672042: Linux kernel vulnerability CVE-2016-4470 Security AdvisorySecurity Advisory Original Publication Date: 10/22/2016 Vulnerability Description The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command. (CVE-2016-4470) Impact Allows disruption of service. Security Issue Status F5 Product Development has assigned ID 623119 (BIG-IP), ID 623155 (BIG-IQ) and ID 623156 (Enterprise Manager) to this vulnerability. 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: Product Versions known to be vulnerable Versions known to be not vulnerable Severity Vulnerable component or feature BIG-IP LTM 12.0.0 - 12.1.1 11.4.0 - 11.6.1 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP AAM 12.0.0 - 12.1.1 11.4.0 - 11.6.1 None Medium Linux Kernel BIG-IP AFM 12.0.0 - 12.1.1 11.4.0 - 11.6.1 None Medium Linux Kernel BIG-IP Analytics 12.0.0 - 12.1.1 11.4.0 - 11.6.1 11.2.1 None Medium Linux Kernel BIG-IP APM 12.0.0 - 12.1.1 11.4.0 - 11.6.1 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP ASM 12.0.0 - 12.1.1 11.4.0 - 11.6.1 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP DNS 12.0.0 - 12.1.1 None Medium Linux Kernel BIG-IP Edge Gateway 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP GTM 11.4.0 - 11.6.1 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP Link Controller 12.0.0 - 12.1.1 11.4.0 - 11.6.1 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP PEM 12.0.0 - 12.1.1 11.4.0 - 11.6.1 None Medium Linux Kernel BIG-IP PSM 11.4.0 - 11.4.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP WebAccelerator 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel BIG-IP WOM 11.2.1 10.2.1 - 10.2.4 Medium Linux Kernel Enterprise Manager 3.1.1 None Medium Linux Kernel BIG-IQ Cloud 4.0.0 - 4.5.0 None Medium Linux Kernel BIG-IQ Device 4.2.0 - 4.5.0 None Medium Linux Kernel BIG-IQ Security 4.0.0 - 4.5.0 None Medium Linux Kernel BIG-IQ ADC 4.5.0 None Medium Linux Kernel BIG-IQ Centralized Management 5.0.0 - 5.1.0 4.6.0 None Medium Linux Kernel BIG-IQ Cloud and Orchestration 1.0.0 None Medium Linux Kernel F5 iWorkflow 2.0.0 - 2.0.1 None Medium Linux Kernel Traffix SDC 5.0.0 4.0.0 - 4.4.0 None Low Linux Kernel Vulnerability 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 Versions known to be not vulnerable 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. To determine the necessary upgrade path for your BIG-IQ system, you should understand the BIG-IQ product offering name changes. For more information, refer to SOL21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems. Mitigation None Supplemental Information SOL9970: Subscribing to email notifications regarding F5 products SOL9957: Creating a custom RSS feed to view new and updated documents SOL4602: Overview of the F5 security vulnerability response policy SOL4918: Overview of the F5 critical issue hotfix policy SOL167: Downloading software and firmware from F5 SOL13123: Managing BIG-IP product hotfixes (11.x - 12.x) SOL9502: BIG-IP hotfix matrix SOL15106: Managing BIG-IQ product hotfixes SOL15113: BIG-IQ hotfix matrix SOL6664: Obtaining and installing OPSWAT hotfixes SOL10942: Installing OPSWAT hotfixes on BIG-IP APM systems - --------------------------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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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 iQIVAwUBWA2ST4x+lLeg9Ub1AQghKA/8DqnH+I47nYyDpfdVVBZP9fouBAKungrN 2IyObZc6vhDUOcOFjbOgXtc6EBR2jsNEJP1sjJxtm4G8HgYa5U7QMqSWavwGtpuu Fxxq384Pt2r1SSvC4m3pdyUEZJ/uc1WJCDG6XFvAqnEMsVsYCbDkYPYxPrksqxJN HsIlRaOnwLixEclboba5xMLubY4TdViAF2zi/sIwE1ADDUzJ9Tjnse/IBD6gXqin dS5y5cH0BhTK/ywKqUs0HhcRAk5hoi5nJNNmFB48F06IdftjWQpW7DaVW89hpxvW +uZuijvMtZcOFR3OCgmR1vq3a4LnrjRW8X8zGsrM0a/F7QHd9S0s/m4H1yT7+aDu zCFYJltrU2ZS+nqNPsRt+9xy8rCQDJCcsiJ3hQyls6pbljZeItpUkgceZB3ATo9O P1opWtJaAXvixDJ5mnNlwk9T9KneyYs2+bF7n5mQtPFiAD7x+yiAByLekzWw85RW q8X929bctUMNHDdy9Qohp0b1xHoHhTVG1G7RdGigT5VFE8wtFfeUn8TiJU2jSUfn egSGTKZ2a8kzUzVLIcKfmClHnmu9VRGB+yidO45+LfMIA4/GOyCESjJNZOJ/0B+r Lbwf0q67YgjcHl05RGtjUbKaITfhNhIdeQFZ1a5beoROtPrGNCFh4hbZsKZFVVjV vzkfb58cEF4= =F5IK -----END PGP SIGNATURE-----