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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1083 K92140924: F5 management sshd vulnerability CVE-2017-6128 2 May 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 Products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-6128 Original Bulletin: https://support.f5.com/csp/article/K92140924 - --------------------------BEGIN INCLUDED TEXT-------------------- K92140924: SSHD vulnerability CVE-2017-6128 Security Advisory Original Publication Date: Apr 21, 2017 Updated Date: Apr 24, 2017 Applies to (see versions): Security Advisory Description An undisclosed traffic pattern received on an F5 management interface may cause the Secure Shell Daemon (sshd) to stop responding, resulting in a Denial-of-Service (DoS). (CVE-2017-6128) Impact An attacker may be able to cause a denial-of-service (DoS) attack. Security Advisory Status F5 Product Development has assigned ID 475743 (BIG-IP), ID 650003 (BIG-IQ), and ID 650000 (EM) to this vulnerability. Additionally, BIG-IP iHealth may list Heuristic H92140924 on the Diagnostics > Identified > Medium screen. 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 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.2.1 11.5.4 HF3 BIG-IP AAM 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.5.4 HF3 BIG-IP AFM 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.5.4 HF3 BIG-IP Analytics 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.2.1 11.5.4 HF3 BIG-IP APM 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.2.1 11.5.4 HF3 BIG-IP ASM 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.2.1 11.5.4 HF3 BIG-IP DNS None 13.0.0 Not vulnerable None 12.0.0 - 12.1.2 BIG-IP Edge Gateway 11.2.1 None Medium sshd BIG-IP GTM 11.6.0 - 11.6.1 11.6.1 HF2 Medium sshd 11.5.0 - 11.5.4 11.5.4 HF3 11.4.0 - 11.4.1 11.2.1 BIG-IP Link Controller 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.2.1 11.5.4 HF3 BIG-IP PEM 11.6.0 - 11.6.1 13.0.0 Medium sshd 11.5.0 - 11.5.4 12.0.0 - 12.1.2 11.4.0 - 11.4.1 11.6.1 HF2 11.5.4 HF3 BIG-IP PSM 11.4.0 - 11.4.1 None Medium sshd BIG-IP WebAccelerator 11.2.1 None Medium sshd BIG-IP WebSafe 11.6.0 - 11.6.1 13.0.0 Medium sshd 12.0.0 - 12.1.2 11.6.1 HF2 ARX None 6.2.0 - 6.4.0 Not vulnerable None Enterprise Manager 3.1.1 None Medium sshd BIG-IQ Cloud 4.4.0 - 4.5.0 None Medium sshd BIG-IQ Device 4.4.0 - 4.5.0 None Medium sshd BIG-IQ Security 4.4.0 - 4.5.0 None Medium sshd BIG-IQ ADC 4.5.0 None Medium sshd BIG-IQ Centralized Management 4.6.0 5.0.0 - 5.1.0 Medium sshd BIG-IQ Cloud and Orchestration 1.0.0 None Medium sshd F5 iWorkflow 2.0.0 2.1.0 Medium sshd LineRate None 2.5.0 - 2.6.2 Not vulnerable None Traffix SDC None 5.0.0 - 5.1.0 Not vulnerable None 4.0.0 - 4.4.0 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 F5 recommends that you restrict network access to the SSH service to only the BIG-IP management port. Supplemental Information K9970: Subscribing to email notifications regarding F5 products K9957: Creating a custom RSS feed to view new and updated documents K4602: Overview of the F5 security vulnerability response policy K4918: Overview of the F5 critical issue hotfix policy K167: Downloading software and firmware from F5 K13123: Managing BIG-IP product hotfixes (11.x - 13.x) K9502: BIG-IP hotfix matrix K15106: Managing BIG-IQ product hotfixes K15113: BIG-IQ hotfix matrix - --------------------------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 iQIVAwUBWQggb4x+lLeg9Ub1AQiokQ/8C7rtccgzQuzLFWqQLi+ARXBK8RTcaoaL q+2wrkprKFGgs6pwnZsLlBwf4W51vF6+J+c+zPObgnNMi+0rfQQElcHluGe+1ot6 Ui5YnHDCUvIEccq8idbAL1L98+IngTrl3iyEnNq1UXsRPvhTwBhwtqQKbL1eDLfQ 4CzRlJknrW0Qs1m5peRLYMKJWnLl3JbZfqKoGYIJrddOf2mDjxF9jAjCzjhDT+r+ dy1zqXEjl0fY5eaMWC2OBsZPWvBpJzfVbykekHnrEmgT1pqjqcOunWlv1Bo5wZNg c+NH4S3K9hbkIBKW1zWp3Na40zY+zdLnHdxlwRMf/b1Tpyw4y6FnegGXSnjriWwh 8NAwKS4xiJa99uERxMGXeF5v9DMa4tuFUaVYHQnWg7jhFNHIPoL3UmFm8BYobThh ngFhmksf7y8Y5FiMEw++sPSFFLaU5N1ZpV8LP2BkUVV0okzbYPUiQG2W5RmHei8Y OvWdLrfK+pk5xN6ekt185FRqCQUQpsbZLOoRXTMzD4qm4yTyzZCpzOmUFaaIZMMD OwwvM3J7O4ygbTvrsOufz2ZgDFECpltiFYl2G5zmqzQjnJPht3QQwR5BIMSSXDlF YehfDbfsu+/pviDnYjfnU/abFnBQhSdU5TcHh7K+Z1hfS+Wb08yRm1/E06RwxsEi M5J1ghxjWfg= =mA+L -----END PGP SIGNATURE-----