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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0397 Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File Write Vulnerabilities 4 February 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Small Business Routers Publisher: Cisco Systems Operating System: Cisco Impact/Access: Overwrite Arbitrary Files -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-1297 CVE-2021-1296 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-filewrite-7x9mnKjn - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File Write Vulnerabilities Priority: High Advisory ID: cisco-sa-rv160-260-filewrite-7x9mnKjn First Published: 2021 February 3 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvw19856 CSCvw22856 CVE Names: CVE-2021-1296 CVE-2021-1297 CWEs: CWE-36 Summary o Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an unauthenticated, remote attacker to conduct directory traversal attacks and overwrite certain files that should be restricted on an affected system. These vulnerabilities are due to insufficient input validation. An attacker could exploit these vulnerabilities by using the web-based management interface to upload a file to location on an affected device that they should not have access to. A successful exploit could allow the attacker to overwrite files on the file system of the affected device. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-filewrite-7x9mnKjn Affected Products o Vulnerable Products These vulnerabilities affect the following Cisco Small Business Routers if they are running a firmware release earlier than Release 1.0.01.02: RV160 VPN Router RV160W Wireless-AC VPN Router RV260 VPN Router RV260P VPN Router with POE RV260W Wireless-AC VPN Router Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities. Cisco has confirmed that these vulnerabilities do not affect the following Cisco products: RV340 Dual WAN Gigabit VPN Router RV340W Dual WAN Gigabit Wireless-AC VPN Router RV345 Dual WAN Gigabit VPN Router RV345P Dual WAN Gigabit POE VPN Router Workarounds o There are no workarounds that address these vulnerabilities. Fixed Software o Cisco has released free software updates that address the vulnerabilities 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 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 these vulnerabilities in firmware releases 1.0.01.02 and later for Cisco RV160, RV160W, RV260, RV260P, and RV260W Routers. To download the software from the Software Center on Cisco.com, do the following: 1. Click Browse all . 2. Choose Routers > Small Business Routers > Small Business RV Series Routers . 3. Choose the appropriate router. 4. Choose Small Business Router Firmware . 5. Choose a release from the left pane of the product 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 vulnerabilities that are described in this advisory. Source o Cisco would like to thank T. Shiomitsu working with Trend Micro Zero Day Initiative for reporting these vulnerabilities. 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-rv160-260-filewrite-7x9mnKjn Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2021-FEB-03 | +----------+---------------------------+----------+--------+--------------+ - --------------------------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 iQIVAwUBYBt0mONLKJtyKPYoAQjBXxAAmXDvQ4e4LIthvoEe+qvvOriQb7zRWHHA hYyDJPhE6oDCzNIZpWXfhgtXVt1qpxS8MZ3c4m5qIspx6NrX8zxHsbLGBEvJvXaP FVbrSC8Rt4784T+M99AvyLt/qsqCmR7mapQ+Q5FyP0xVP5ppsnX4cmTcn3PBmU3n IN9VYEXZCjY6nVuQLqLF7dQNRyPDTidI1Z/R6fJWlg+BidmAi1QOdfd35Xzyow0I 4tra+rnFN5uzGyt0AY5uyBfIWGSGcWBr+O3wNV0AJeLViDCm6XeEVpEi5ChWZc3f BWsBXgiW9WEdh6fBb4XywgPj38JtBJmQzhC8RIRh9UXElk/cZg/VgF7NyACPGPva MJ3QlY8R/6Ei2I2r4juMgovF+NOi1lkNT7q562U7RJjyyZr42VDE2XUlR1mDScMQ i8NZuGFopDuR2Em4JkgxD1Q1YjVzfRLuiLhYH+64xKfqkrZeAK6DkNH3hjZakhDf x4Em/67vYtuwXXg3UYhB9/JSZf+5ElL9o7IBWluCOdR3y7PL1VlCz7koE+Dq306+ BRF0f5rW450Ebz0pxO5dxq9oiNXiAxAeI3uqIuLEGOK/fcR7sj8Wwa/mWgRcdW7+ aHZsvVt9Fj3DjnfFWvfeWPYF7Hgs84s0u/R4Zw7aSgB/QNenM8KZ9XDLmmeKHwBA oMQbNngELJs= =/gXm -----END PGP SIGNATURE-----