Cisco RV110W, RV130W, and RV215W Routers Static Credential Vulnerability

Summary

• A vulnerability in the default account when used with a specific configuration of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and the Cisco RV215W Wireless-N VPN Router could allow an authenticated, remote attacker to gain root access to the device. The account could incorrectly be granted root privileges at authentication time.
  
  The vulnerability is due to improper role-based access control (RBAC) of the default account. The default account should never be allowed root privileges and should, in all cases, be read-only. An attacker could exploit this vulnerability by logging into the targeted device using the default account. An exploit could allow the attacker to authenticate to the device using the default account and be assigned root privileges.
  
  Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.
  
  This advisory is available at the following link:
  
  http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160803-rv110_130w2

Affected Products

• Vulnerable Products

  The following Cisco products are affected by this vulnerability for all firmware versions until the first fixed version.
  

  • RV110W Wireless-N VPN Firewall
  • RV130W Wireless-N Multifunction VPN Router
  • RV215W Wireless-N VPN Router

  The web-based management interface is available for these devices via a local LAN connection or the remote management feature. By default, the remote management feature is disabled for the affected devices.
  
  To determine whether the remote management feature is enabled for a device, open the web-based management interface for the device and then choose Basic Settings > Remote Management. If the Enable check box is checked, remote management is enabled for the device.

  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 consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories 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 Technical Assistance Center (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
  
  This vulnerability is fixed in the following firmware versions.
  

  • RV110W Wireless-N VPN Firewall, Release 1.2.1.7
  • RV130W Wireless-N Multifunction VPN Router, Release 1.0.3.16
  • RV215W Wireless-N VPN Router, Release 1.3.0.8

  The firmware updates can be downloaded from the Software Center on Cisco.com by navigating to Products > Routers > Small Business Routers > Small Business RV Series Routers.
  

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

• Cisco would like to thank external security researcher Adam Zielinski for discovering and reporting this vulnerability.

URL

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160803-rv110_130w2

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	?	Final	2016-August-03

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