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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.0775 Cisco IOx Data in Motion Stack Overflow Vulnerability 23 March 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Data-in-Motion (DMo) Publisher: Cisco Systems Operating System: Cisco Impact/Access: Root Compromise -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-3853 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-iox - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco IOx Data in Motion Stack Overflow Vulnerability Critical Advisory ID: cisco-sa-20170322-iox First Published: 2017 March 22 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCuy52330 CVSS Score: Base 9.8, Temporal 9.8 CVE-2017-3853 CWE-119 Summary A vulnerability in the Data-in-Motion (DMo) process installed with the Cisco IOx application environment could allow an unauthenticated, remote attacker to cause a stack overflow that could allow remote code execution with root privileges in the virtual instance running on an affected device. The vulnerability is due to insufficient bounds checking in the DMo process. An attacker could exploit this vulnerability by sending crafted packets that are forwarded to the DMo process for evaluation. The impacts of a successful exploit are limited to the scope of the virtual instance and do not impact the router that is hosting Cisco IOx. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-iox Affected Products Vulnerable Products This vulnerability affects the following Cisco 800 Series Industrial Integrated Services Routers: Cisco IR809 Cisco IR829 Cisco IOx Releases 1.0.0.0 and 1.1.0.0 are vulnerable. Administrators can use the Cisco IOx Local Manager web-based management interface to determine which Cisco IOx release is running on a device: Launch the Local Manager GUI. Log in. Click the Systems Info tab. The Cisco IOx release is shown in the Software Ver area. Products Confirmed Not Vulnerable No other Cisco products are currently known to be affected by this vulnerability. Workarounds There are no workarounds that address this vulnerability. Fixed Software Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to upgrade contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Customers Without Service Contracts Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Fixed Releases Cisco IOx version 1.2.4.2 resolves this vulnerability. Cisco IOx Release 1.2.4.2 can be downloaded from the Software Center on Cisco.com by navigating to Products > Routers > Industrial Routers > 800 Series Industrial Integrated Services Routers > 809 Industrial Integrated Services Routers > IOx Fog Node Software-1.2.0. This release of Cisco IOx is also included in the Cisco IOS bundle image, which can be downloaded from the Software Center on Cisco.com by navigating to Products > Routers > Industrial Routers > 800 Series Industrial Integrated Services Routers > 809 Industrial Integrated Services Routers > IOS Software-15.6.3M1b. Exploitation and Public Announcements The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source This vulnerability was found during internal testing. URL https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-iox Revision History Version Description Section Status Date 1.0 Initial public release. Final 2017-March-22 - --------------------------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 iQIVAwUBWNMxCox+lLeg9Ub1AQi5ug/8DnotRd0MOnD3tXXldwrUcK6vQiebeqL2 s1B6lPg0mcthHV1SSvDF3+SXlbHRTrDUOsQsqNyRqQ1R78F8lNwYMEr3p7Xx0yRp T1arIAMUuUwmgdoh0dV8zvwSOgP/S0mQII2oWEHflNzllHODgJFK9jxJ+zW0q8kM nvzAygC10MFYPxMFcgRzFCmhZ+WJw5ZpLNwlINk8PjVL/U04VovNZqyE/6gyk+iO W6YAFqvzu2zU1epR9DmBg9Vg7scbZ4+YC39/3oSSZRNkrNatQmHCqjYpY9ZZ+IZK 9ENXlrJLkHYw0t2shnpEugZP3iw8aEXFaJwYB609kbldB8jKxXz23qldvAgyDuA6 3DNE2AqUQ8OkxA13jgK2R6S6LOc1jvTZ2F7WqLerMsRKOFBwS5fOkKYssgyuyhHG RBnQihuXylrwr1/BZFUMfOW8PtjpNNH/ZjEWd0zb4Qk5JaEZXkxrQbeMmwFrfbau wDneFFd3cZay6D05OYgiQVO+7XaIT8jGSnbQdm0K3hbRHcQIE2pSvHm872p/TIfJ FEcqzfBzYj6W013FiwluddUFwSJ9evyvGhOUcTjs0SYxCAaIE7yMoSOB/F5KfGO1 cDg3pmLYXhal/sB4QWxpXnyXDxRfdTIPL0+Qv2Qv3tGvjwFSRdbu1Bxf6OjzqjBL VZnGs5pODTk= =gk/c -----END PGP SIGNATURE-----