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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3178 SSHD session.c vulnerability CVE-2016-3115 18 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 BIG-IP products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-3115 Reference: ASB-2017.0219 ESB-2018.2693 ESB-2016.1043 ESB-2016.0709 Original Bulletin: https://support.f5.com/csp/article/K93532943 - --------------------------BEGIN INCLUDED TEXT-------------------- K93532943:SSHD session.c vulnerability CVE-2016-3115 Security Advisory Original Publication Date: 28 Apr, 2016 Latest Publication Date: 17 Oct, 2018 Security Advisory Description Multiple CRLF injection vulnerabilities in session.c in sshd in OpenSSH before 7.2p2 allow remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data, related to the (1) do_authenticated1 and (2) session_x11_req functions. (CVE-2016-3115) Impact Remote users may have the ability to read arbitrary files by using the authenticated user's privilege. Security Advisory Status F5 Product Development has assigned ID 583678 (BIG-IP), ID 584222 (Enterprise Manager), ID 584220 (BIG-IQ), INSTALLER-2306 (Traffix SDC), and LRS-60665 (LineRate) to this vulnerability. Additionally, BIG-IP iHealth may list Heuristic H589591 on the Diagnostics > Identified > Medium page. 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. +---------------+---------------+-----------------+----------+---------------+ | |Versions known |Versions known to| |Vulnerable | |Product |to be |be not vulnerable|Severity |component or | | |vulnerable | | |feature | +---------------+---------------+-----------------+----------+---------------+ | |12.0.0 - 12.1.2| | | | |BIG-IP LTM |11.4.0 - 11.6.1|13.0.0 |Medium |OpenSSH * | | |11.2.1 |12.1.3 | | | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP AAM |12.0.0 - 12.1.2|13.0.0 |Medium |OpenSSH * | | |11.4.0 - 11.6.1|12.1.3 | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP AFM |12.0.0 - 12.1.2|13.0.0 |Medium |OpenSSH * | | |11.4.0 - 11.6.1|12.1.3 | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP |12.0.0 - 12.1.2|13.0.0 |Medium |OpenSSH * | |Analytics |11.4.0 - 11.6.1|12.1.3 | | | +---------------+---------------+-----------------+----------+---------------+ | |12.0.0 - 12.1.2| | | | |BIG-IP APM |11.4.0 - 11.6.1|13.0.0 |Medium |OpenSSH * | | |11.2.1 |12.1.3 | | | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ | |12.0.0 - 12.1.2| | | | |BIG-IP ASM |11.4.0 - 11.6.1|13.0.0 |Medium |OpenSSH * | | |11.2.1 |12.1.3 | | | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP DNS |12.0.0 - 12.1.2|13.0.0 |Medium |OpenSSH * | | | |12.1.3 | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP Edge |11.2.1 |None |Medium |OpenSSH * | |Gateway |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ | |11.4.0 - 11.6.1| | | | |BIG-IP GTM |11.2.1 |None |Medium |OpenSSH * | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ | |12.0.0 - 12.1.2| | | | |BIG-IP Link |11.4.0 - 11.6.1|13.0.0 |Medium |OpenSSH * | |Controller |11.2.1 |12.1.3 | | | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP PEM |12.0.0 - 12.1.2|13.0.0 |Medium |OpenSSH * | | |11.4.0 - 11.6.1|12.1.3 | | | +---------------+---------------+-----------------+----------+---------------+ | |11.4.0 - 11.4.1| | | | |BIG-IP PSM |11.2.1 |None |Medium |OpenSSH * | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP |11.2.1 |None |Medium |OpenSSH * | |WebAccelerator |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IP WOM |11.2.1 |None |Medium |OpenSSH * | | |10.2.1 - 10.2.4| | | | +---------------+---------------+-----------------+----------+---------------+ |ARX |None |6.0.0 - 6.4.0 |Not |None | | | | |vulnerable| | +---------------+---------------+-----------------+----------+---------------+ |Enterprise |3.0.0 - 3.1.1 |None |Medium |OpenSSH * | |Manager | | | | | +---------------+---------------+-----------------+----------+---------------+ |FirePass |None |7.0.0 |Not |None | | | |6.0.0 - 6.1.0 |vulnerable| | +---------------+---------------+-----------------+----------+---------------+ |BIG-IQ Cloud |4.0.0 - 4.5.0 |None |Medium |OpenSSH * | +---------------+---------------+-----------------+----------+---------------+ |BIG-IQ Device |4.2.0 - 4.5.0 |None |Medium |OpenSSH * | +---------------+---------------+-----------------+----------+---------------+ |BIG-IQ Security|4.0.0 - 4.5.0 |None |Medium |OpenSSH * | +---------------+---------------+-----------------+----------+---------------+ |BIG-IQ ADC |4.5.0 |None |Medium |OpenSSH * | +---------------+---------------+-----------------+----------+---------------+ |BIG-IQ | | | | | |Centralized |4.6.0 |None |Medium |OpenSSH * | |Management | | | | | +---------------+---------------+-----------------+----------+---------------+ |BIG-IQ Cloud | | | | | |and |1.0.0 |None |Medium |OpenSSH * | |Orchestration | | | | | +---------------+---------------+-----------------+----------+---------------+ |LineRate |2.5.0 - 2.6.1 |None |Low |OpenSSH | +---------------+---------------+-----------------+----------+---------------+ |F5 WebSafe |None |1.0.0 |Not |None | | | | |vulnerable| | +---------------+---------------+-----------------+----------+---------------+ |Traffix SDC |4.0.0 - 4.4.0 |None |Low |OpenSSH | | |3.3.2 - 3.5.1 | | | | +---------------+---------------+-----------------+----------+---------------+ * The affected versions ship with vulnerable code, but do not enable the code by default. The X11Forwarding option is not enabled unless explicitly enabled by an administrator. 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 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 K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems. Mitigation To mitigate this vulnerability, you can ensure that the X11Forwarding option is absent, commented out, or set to "no" in the sshd_config configuration file. Additionally, you may restrict remote access to the sshd TCP port 22 to trusted networks only. Impact of action: Performing the suggested mitigations should not have a negative impact on your system. Supplemental Information o K9970: Subscribing to email notifications regarding F5 products o K4602: Overview of the F5 security vulnerability response policy o K9957: Creating a custom RSS feed to view new and updated documents o K4918: Overview of the F5 critical issue hotfix policy o K167: 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 auscert@auscert.org.au and we will forward your request to the appropriate person. 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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 iQIVAwUBW8g/sGaOgq3Tt24GAQjnKg//Zl/cbyVM3tSjFIElSWpURGiVRko7j83y StQBa6vWlJum+ryfG7+Tj6y1OHBHXPEtaek3ZyijnfDhVYAe9mdf778D69azTlGY afDJh0zYjWL9vLKfGE87iJ4SfzuEmtBeHVm1O5rn4mde1+y7rEiJouUfr0OTU20v x25gk6eahHUDvfw7vNXg3URCQPEG2IoDdkdjh0AySCupZA4aiURM/kNVeLcnq2gR Gz3TO75T5IeuYJdykX1vglsSBGyWOivnk1OuwdQr/Y99zZUc2bLc+wfnaSwsynem 14qYp/KQMn5tUHXxnkqDqkJ9ceCfETVlUfFICs8Vt+zjhlwldIla1Gi6mSXTwL8F 4VVU9QENGYrcUyD4qNeWZN56Q2M5U2asKWUz2ItnpTL7jRO7/VqH1XfP/rXcxO+V V0SWgDiHtYtNrWVp0YKIOg1sdhC5i2yKI922mmYtDcMVlKLB0ehLzRGf7bupPZ5O fdhGFMWq6SGX4Sy933Pm2Vusjur1Bf7WgDgHU/rhAGZyStaxcg81usXwMuxnZ4kE SXlxE7qffhTdcoBAsWwlDHg6JE0eE0ZbAYrC+Q2230/waeViG14tS+OdjtM+jpnt S9KTzp5y+6Bl9pIdWKp3DxnKNBHr4ms6vlFF4uTX/3B3mdtclAH56lYlej2CayKT X+neZNDOCK8= =FXB0 -----END PGP SIGNATURE-----