26 August 2015
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.2239 sol17132: Linux kernel vulnerability CVE-2014-8133 26 August 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2014-8133 Reference: ESB-2015.1935 ESB-2015.0108 Original Bulletin: https://support.f5.com/kb/en-us/solutions/public/17000/100/sol17132.html - --------------------------BEGIN INCLUDED TEXT-------------------- sol17132: Linux kernel vulnerability CVE-2014-8133 Security Advisory Original Publication Date: 08/24/2015 Description arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1 allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area system call and later reads a 16-bit value. (CVE-2014-8133) Impact This vulnerability allows local users to bypass the espfix protection mechanism, which consequently makes it easier for local users to bypass the ASLR protection mechanism using a crafted application that makes a set_thread_area system call and later reads a 16-bit value. Status 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 Versions known to Severity Vulnerable component be vulnerable be not vulnerable or feature BIG-IP LTM 10.1.0 - 10.2.4 11.0.0 - 11.6.0 Low Linux kernel* BIG-IP AAM None 11.4.0 - 11.6.0 Not vulnerable None BIG-IP AFM None 11.3.0 - 11.6.0 Not vulnerable None BIG-IP None 11.0.0 - 11.6.0 Not vulnerable None Analytics BIG-IP APM 10.1.0 - 10.2.4 11.0.0 - 11.6.0 Low Linux kernel* BIG-IP ASM 10.1.0 - 10.2.4 11.0.0 - 11.6.0 Low Linux kernel* BIG-IP Edge 10.1.0 - 10.2.4 11.0.0 - 11.3.0 Low Linux kernel* Gateway BIG-IP GTM 10.1.0 - 10.2.4 11.0.0 - 11.6.0 Low Linux kernel* BIG-IP Link 10.1.0 - 10.2.4 11.0.0 - 11.6.0 Low Linux kernel* Controller BIG-IP PEM None 11.3.0 - 11.6.0 Not vulnerable None BIG-IP PSM 10.1.0 - 10.2.4 11.0.0 - 11.4.1 Low Linux kernel* BIG-IP 10.1.0 - 10.2.4 11.0.0 - 11.3.0 Low Linux kernel* WebAccelerator BIG-IP WOM 10.1.0 - 10.2.4 11.0.0 - 11.3.0 Low Linux kernel* ARX None 6.0.0 - 6.4.0 Not vulnerable None Enterprise None 3.0.0 - 3.1.1 Not vulnerable None Manager FirePass None 7.0.0 Not vulnerable None 6.0.0 - 6.1.0 BIG-IQ Cloud None 4.0.0 - 4.5.0 Not vulnerable None BIG-IQ Device None 4.2.0 - 4.5.0 Not vulnerable None BIG-IQ Security None 4.0.0 - 4.5.0 Not vulnerable None BIG-IQ ADC None 4.5.0 Not vulnerable None LineRate None 2.5.0 - 2.6.1 Not vulnerable None F5 WebSafe None 1.0.0 Not vulnerable None Traffix SDC None 4.0.0 - 4.4.0 Not vulnerable None 3.3.2 - 3.5.1 Note: As of February 17, 2015, AskF5 Security Advisory articles include the Severity value. Security Advisory articles published before this date do not list a Severity value. *This vulnerability affects only 32-bit based systems. To determine if your BIG-IP device is a 32-bit based system, you can type the following command from the BIG-IP command line: uname -m 32-bit systems will return i686 or i386 and 64-bit systems will return x86_64. Recommended Action The F5 vulnerability severity has been marked as LOW due to the requirement that the attacker has local access and exposes partial confidentiality and/or integrity. To mitigate this vulnerability for the BIG-IP system, you should permit management access to F5 products only over a secure network, and limit shell access to trusted users. For more information, refer to SOL13309: Restricting access to the Configuration utility by source IP address (11.x) and SOL13092: Overview of securing access to the BIG-IP system. 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 - --------------------------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 email@example.com 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. 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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: firstname.lastname@example.org 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). 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