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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1925 OS Kernel and SMM mode L1 Terminal Fault vulnerability CVE-2018-3620 29 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-3620 Reference: ASB-2018.0204 ESB-2018.2343 Original Bulletin: https://support.f5.com/csp/article/K95275140 - --------------------------BEGIN INCLUDED TEXT-------------------- K95275140:OS Kernel and SMM mode L1 Terminal Fault vulnerability CVE-2018-3620 Security Advisory Original Publication Date: 06 Oct, 2018 Latest Publication Date: 29 May, 2019 Security Advisory Description Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis. (CVE-2018-3620 also known as Foreshadow-NG) Impact For products with None in the Versions known to be vulnerable column, there is no impact. BIG-IP CVE-2018-3620 requires an attacker who is capable of providing and running binary code of their choosing on the BIG-IP platform. This raises a high bar for attackers attempting to target BIG-IP systems over a network and would require an additional, unpatched, user-space remote code execution vulnerability to exploit these new issues. The only administrative roles on a BIG-IP system allowed to execute binary code or exploitable analogs, such as JavaScript, are the Administrator, Resource Administrator, Manager, and iRules Manager roles. The Administrator and Resource Administrator users already have nearly complete access to the system and all secrets on the system that are not protected by hardware based encryption. The Manager and iRules Manager roles do have more restricted access to the system, but have the ability to install new iRulesLX code. A malicious authorized Manager or iRules Manager can install malicious binary code to exploit these information leaks and gain more privileged access. F5 recommends limiting access to these roles to trusted employees. Enterprise Manager CVE-2018-3620 requires an attacker who is capable of providing and running binary code of their choosing on the Enterprise Manager platform. This raises a high bar for attackers attempting to target the Enterprise Manager system over a network and would require an additional, un-patched, user-space remote code execution vulnerability to exploit these new issues. BIG-IQ CVE-2018-3620 requires an attacker who is capable of providing and running binary code of their choosing on the BIG-IQ platform. This raises a high bar for attackers attempting to target the BIG-IQ system over a network and would require an additional, un-patched, user-space remote code execution vulnerability to exploit these new issues. F5 iWorkflow CVE-2018-3620 requires an attacker who is capable of providing and running binary code of their choosing on the F5 iWorkflow platform. This raises a high bar for attackers attempting to target the F5 iWorkflow system over a network and would require an additional, un-patched, user-space remote code execution vulnerability to exploit these new issues. Traffix SDC An unprivileged attacker can use this vulnerability to read privileged memory of the kernel or other processes and/or cross guest/host boundaries to read host memory by conducting targeted cache side-channel attacks. Security Advisory Status F5 Product Development has assigned ID 740755 (BIG-IP, BIG-IQ and Enterprise Manager) and CPF-24976 and CPF-24977 (Traffix SDC) to this vulnerability. Additionally, BIG-IP iHealth may list Heuristic H95275140 on the Diagnostics > Identified > Medium page. 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 | | | |be |in | |1 |or feature| | | |vulnerable| | | | | +---------------------+------+----------+----------+--------+------+----------+ | |15.x |None |15.0.0 | | | | | +------+----------+----------+ | | | | |14.x |14.0.0 |None | | | | |BIG-IP (LTM, AAM, +------+----------+----------+ | | | |AFM, Analytics, APM, |13.x |13.0.0 - |None | | | | |ASM, DNS, Edge | |13.1.1 | |Medium |5.3 |CPU | |Gateway, FPS, +------+----------+----------+ | | | |GTM, Link Controller,|12.x |12.1.0 - |None | | | | |PEM, WebAccelerator) | |12.1.3 | | | | | | +------+----------+----------+ | | | | |11.x |11.2.1 - |None | | | | | | |11.6.3 | | | | | +---------------------+------+----------+----------+--------+------+----------+ |Enterprise Manager |3.x |3.1.1 |None |Medium |5.3 |CPU | +---------------------+------+----------+----------+--------+------+----------+ | |6.x |6.0.0 - |None | | | | | | |6.0.1 | | | | | |BIG-IQ Centralized +------+----------+----------+ | | | |Management |5.x |5.0.0 - |None |Medium |5.3 |CPU | | | |5.4.0 | | | | | | +------+----------+----------+ | | | | |4.x |4.6.0 |None | | | | +---------------------+------+----------+----------+--------+------+----------+ |BIG-IQ Cloud and |1.x |1.0 |None |Medium |5.3 |CPU | |Orchestration | | | | | | | +---------------------+------+----------+----------+--------+------+----------+ |F5 iWorkflow |2.x |2.2.0 - |None |Medium |5.3 |CPU | | | |2.3.0 | | | | | +---------------------+------+----------+----------+--------+------+----------+ | |5.x |5.0.0 - |None | | | | |Traffix SDC | |5.1.0 | |Medium |5.8 |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. F5 believes that Virtual Editions running as a guest on public or private cloud infrastructure are no more vulnerable than any other Linux based guest. F5 believes that the highest impact realistic attack for CVE-2018-3620 may occur in multi-tenancy Virtual Clustered Multiprocessing (vCMP) configurations. Vulnerable platforms BIG-IP The following tables list only one entry for platform models that have several variants. For example, BIG-IP 11000, BIG-IP 11050, BIG-IP 11050F, and BIG-IP 11050N are included in the table as "BIG-IP 110x0." +-------------+---------------+-------------+ |Model |Processor Types|Vulnerable to| | | |CVE-2018-3620| +-------------+---------------+-------------+ |BIG-IP B21x0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP B2250 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP B4100 |AMD |N | +-------------+---------------+-------------+ |BIG-IP B4200 |AMD |N | +-------------+---------------+-------------+ |BIG-IP B43x0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP B44x0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 2xx0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 4xx0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 5xx0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 7xx0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 10xxx |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 12xx0 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP i2x00 |Intel, ARM |Y | +-------------+---------------+-------------+ |BIG-IP i4x00 |Intel, ARM |Y | +-------------+---------------+-------------+ |BIG-IP i5x00 |Intel, ARM |Y | +-------------+---------------+-------------+ |BIG-IP i7x00 |Intel, ARM |Y | +-------------+---------------+-------------+ |BIG-IP i10x00|Intel, ARM |Y | +-------------+---------------+-------------+ |BIG-IP 800 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 1600 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 3600 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 3900 |Intel |Y | +-------------+---------------+-------------+ |BIG-IP 6900 |AMD |N | +-------------+---------------+-------------+ |BIG-IP 89x0 |AMD |N | +-------------+---------------+-------------+ |BIG-IP 110x0 |AMD |N | +-------------+---------------+-------------+ |BIG-IP 6400 |AMD |N | +-------------+---------------+-------------+ BIG-IQ and Enterprise Manager Systems with microprocessors that use speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access by way of a side-channel analysis. To determine which vulnerabilities affect each platform and the processor type each platform uses, refer to the following table. +-----------------------+--------------+---------------------------+ |Model |Processor type|Vulnerable to CVE-2018-3620| +-----------------------+--------------+---------------------------+ |BIG-IQ 7000 |Intel |Y | +-----------------------+--------------+---------------------------+ |Enterprise Manager 4000|Intel |Y | +-----------------------+--------------+---------------------------+ 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 - --------------------------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. 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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). 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