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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0340 Cisco Small Business Switches Information Disclosure Vulnerability 30 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: 200 Series Smart Switches 250 Series Smart Switches 300 Series Managed Switches 350 Series Managed Switches 350X Series Managed Switches 500 Series Managed Switches 550X Series Managed Switches Publisher: Cisco Systems Operating System: Cisco Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-15993 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200129-smlbus-switch-disclos - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Small Business Switches Information Disclosure Vulnerability Priority: High Advisory ID: cisco-sa-20200129-smlbus-switch-disclos First Published: 2020 January 29 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvr54104CSCvs68748 CVE-2019-15993 CWE-16 CVSS Score: 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X Summary o A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to access sensitive device information. The vulnerability exists because the software lacks proper authentication controls to information accessible from the web UI. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web UI of an affected device. A successful exploit could allow the attacker to access sensitive device information, which includes configuration files. 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-20200129-smlbus-switch-disclos Affected Products o Vulnerable Products This vulnerability affects the following Cisco products if they are running a firmware release earlier than 2.5.0.92: 250 Series Smart Switches 350 Series Managed Switches 350X Series Stackable Managed Switches 550X Series Stackable Managed Switches This vulnerability affects the following Cisco products if they are running a firmware release earlier than 1.4.11.4: 200 Series Smart Switches 300 Series Managed Switches 500 Series Stackable Managed Switches Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o 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: https://www.cisco.com/c/en/us/products/ end-user-license-agreement.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 be upgraded 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: https://www.cisco.com/c/en/us/support/web/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 fixed this vulnerability in firmware release 2.5.0.92 for the following Cisco products: 250 Series Smart Switches 350 Series Managed Switches 350X Series Stackable Managed Switches 550X Series Stackable Managed Switches Cisco fixed this vulnerability in firmware release 1.4.11.4 for the following Cisco products: 200 Series Smart Switches 300 Series Managed Switches 500 Series Stackable Managed Switches To download the firmware from the Software Center on Cisco.com, do the following: 1. Click Browse all . 2. Choose Switches > LAN Switches - Small Business . 3. Choose a specific product from the right pane of the product selector. 4. Choose Smart Switch Firmware or Switch Firmware . 5. Choose a release from the left pane of the page. Exploitation and Public Announcements o 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 o Cisco would like to thank Ken Pyle of DFDR Consulting LLC for reporting this vulnerability. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20200129-smlbus-switch-disclos Revision History o +---------+--------------------------+---------+--------+-----------------+ | Version | Description | Section | Status | Date | +---------+--------------------------+---------+--------+-----------------+ | 1.0 | Initial public release. | - | Final | 2020-January-29 | +---------+--------------------------+---------+--------+-----------------+ - --------------------------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: 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 iQIVAwUBXjI7JmaOgq3Tt24GAQhung//cXaK0slD+TJeaO14iIoluo1tHQUYV6xI J+yoMXMqpSjwGnnfWn2wcrX27YpbqSImZgsMq7GbZdM8leE9qfp6Fgu9ckQKiZnC 0ERm97M5SEzQi9Nhs1G57ZIfBI/S7ztrqTzprUyPFDf5v/qSoBEbMQWNMM7IEXPE Fdz7hShBJBIZHRriL9+152777vb278gfeUQoBSmyZLF1YbOgdpKf4sRi0F3W6yBL WGpyVrLk0aTJbaR+cNgtUGUCYl/6lF5F2og4KzF5gCNnc3eGgK+8ak8Sfpdcerxq 7J+cxW1DLJrTSQ392bLA2ANcH0dE8B1/jKeEIH179e2XLMV9459MouOyL3KkB5EZ pkHTZzH+EZBU2lx/cVnu9z6dIQ5upaN6hM0XM4hlSyLrBM9Kpb3JBQc4gMmb3nHJ I5ZcMUEKPU+JS8MBI9IfxtC+B9sQTb88b3RfiWL4oY+cfm5ubkWNR3TWbipY4skZ 3hwOC0uCM3NsFOvGjWv1kEGsvpnEXaoBK+AYb9d3wKIZSh3q4kPxQAPbcdRzd09a ik4LVMa7v+BMrIXAnH6T1ny9C0ecHaFv5zjXpmEtbiI/K9zFFh28L5d2BrWKCQYb gwORcn9LXh3h11XklFOrNskktHNel/gvP6oWzYWeKTn8cD+TKcMddG8dV3ob1pPj ZHY/CO9RcwY= =cSF7 -----END PGP SIGNATURE-----