Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2928.3 F5 products affected by Linux kernel vulnerability 20 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-12190 Reference: ESB-2018.1301 ESB-2018.0528.2 ESB-2017.2980 Original Bulletin: https://support.f5.com/csp/article/K93472064 Comment: This vulnerability was originally announced by F5 for their products more than a year ago, but F5 have just announced that fixes for BIG-IP products have become available in version 14 so we are publishing it now. Revision History: January 20 2020: Updated the Security Advisory Status Matrix November 15 2019: Updated the Security Advisory Status Matrix August 6 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- K93472064:Linux kernel vulnerability CVE-2017-12190 Security Advisory Original Publication Date: 20 Jul, 2018 Latest Publication Date: 17 Jan, 2020 Security Advisory Description The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition. (CVE-2017-12190) Impact A locally authenticated attacker can exploit this vulnerability to trigger an out-of-memory condition to cause a denial of service (DoS) on the affected system. Security Advisory Status F5 Product Development has assigned IDs 734177 and 734181 (BIG-IP), ID 734624 (BIG-IQ and iWorkflow), ID 734257 (Enterprise Manager), and ID CPF-24941 and CPF-24942 (Traffix SDC) 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| | | | | +------+----------+----------+ | | | |BIG-IP (LTM, AAM, |14.x |14.0.0 - |14.1.2.2 | | | | |AFM, Analytics, | |14.1.2 | | | | | |APM, ASM, DNS, Edge+------+----------+----------+ | |TMOS | |Gateway, FPS, GTM, |13.x |13.0.0 - |None |Medium |6.2 |(Linux | |Link Controller, | |13.1.3 | | | |kernel) | |PEM, +------+----------+----------+ | | | |WebAccelerator) |12.x |12.1.0 - |None | | | | | | |12.1.5 | | | | | | +------+----------+----------+ | | | | |11.x |11.2.1 - |None | | | | | | |11.6.5 | | | | | +-------------------+------+----------+----------+----------+------+----------+ |ARX |6.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ | | | | | | |TMOS | |Enterprise Manager |3.x |3.1.1 |None |Medium |6.2 |(Linux | | | | | | | |kernel) | +-------------------+------+----------+----------+----------+------+----------+ | |7.x |7.0.0 |None | | | | | +------+----------+----------+ | | | | |6.x |6.0.0 - |None | | | | |BIG-IQ Centralized | |6.1.0 | | | |TMOS | |Management +------+----------+----------+Medium |6.2 |(Linux | | |5.x |5.0.0 - |None | | |kernel) | | | |5.4.0 | | | | | | +------+----------+----------+ | | | | |4.x |4.6.0 |None | | | | +-------------------+------+----------+----------+----------+------+----------+ |BIG-IQ Cloud and | | | | | |TMOS | |Orchestration |1.x |1.0.0 |None |Medium |6.2 |(Linux | | | | | | | |kernel) | +-------------------+------+----------+----------+----------+------+----------+ | | |2.1.0 - | | | |TMOS | |F5 iWorkflow |2.x |2.3.0 |None |Medium |6.2 |(Linux | | | | | | | |kernel) | +-------------------+------+----------+----------+----------+------+----------+ | |5.x |5.0.0 - |None | | |TMOS | |Traffix SDC | |5.1.0 | |Medium |6.2 |(Linux | | +------+----------+----------+ | |kernel) | | |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. F5 will not develop a fix for vulnerable products that do not already have a fixed version listed in this article, and will not update this table with subsequent vulnerable releases in the associated branches. F5 recommends that you update to more recent, non-vulnerable versions whenever feasible. For more information, refer to K4602: Overview of the F5 security vulnerability response policy. 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 K41942608: Overview of Security Advisory articles 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 K15106: Managing BIG-IQ product hotfixes o K15113: BIG-IQ hotfix and point release matrix o K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM systems (11.4.x and later) 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 o K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow 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: 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 iQIVAwUBXiUjWmaOgq3Tt24GAQg5uRAAvFaD4RXRMI7HKl4JkQu9pa4L1xVYSoDU agULDZfcJYTxYuAWW5hqEzA6PIV4+w0QFomv/e2a/fpoDwI4yhpfXLjCkRgytaQD XDE42xCRR2qnKAha70QQ2dAT2Iz1T/+k2RaubOSMdwui97dhi5Fz9YrnlH2lREaD NpOLJzA2HD18w59lL/56ZulQ8+ah/294xQIQW8Txnh2Ray8h5R7Lx3HXtDkAYu7a rfZ3nORNA6nDwlJ8yIYGv/8/ZmsxBxLAU+/ZiLHLa/Gkezd0j9fDMKkFxXUA3gfq jgE38cq7Df/wznOr0/m0uQcJkjpynY4KYG+RGTimC32b1WJ6CaJVnC97yXHtGDBw wpjuaGOFGHUKOkIYml14CF+KIxwFKHJQP7Mk+HPUmvfgLt7ApdJy8RPDx//vD2j3 9mFslTM3/fc7tSYdemhTMROIElKNhI5iyF12GMpccTT8UgRcW1fUGnuwOotcOCUz WzTqqGxjWOZB5X0mrmqBLfclNFsRWXJYRP2hCzc2qGp9l5KJd9fKY6K2X5uhuZRy haJrVLV/aY6nYokMWVh7ZTRXOzOVagA1bX8nBnV7qpXFB2eSH1FzV7z0O0BFxmau M4PP+F+YYwhUmsN0kO6JH5zuAtKkw5swSMGRooxdaJpE4P2+yCSW2uW1V/4A3tTr KHJ++fyP0c0= =SXf2 -----END PGP SIGNATURE-----