Cisco RV180 VPN and RV180W Wireless-N Multifunction VPN Routers Remote Code Execution Vulnerability

Summary

• A vulnerability in the web interface of the Cisco RV180 VPN Router and Cisco RV180W Wireless-N Multifunction VPN Router could allow an authenticated, remote attacker to execute arbitrary commands with root-level privileges.
  
  The vulnerability is due to improper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. An exploit could allow the attacker to execute arbitrary commands with root-level privileges.
  
  Cisco has not released and will not release a firmware update to address this vulnerability. Mitigations for this vulnerability are available.
  
  This advisory is available at the following link:
  
  http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160803-rv180_2

Affected Products

• Vulnerable Products

  All firmware versions of Cisco RV180 VPN Router and RV180W Wireless-N Multifunction VPN Router are vulnerable.

  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. The following two mitigations may help limit exposure to this vulnerability:
  
  Disable Remote Management
  
  Caution: Do not disable remote management if the device is managed via the WAN connection. This will result in loss of management connectivity to the device. Disabling this feature prevents Cisco QuickVPN access.
  
  Remote Management is disabled by default. If it is enabled, administrators can disable it using the Web Access screen: Administration > Management Interface > Web Access. Check the box for Disabled in the Remote Management field.
  
  Disabling remote management helps ensure that only users on the LAN could attempt to exploit the vulnerabilities. Remote management is not enabled by default on the device.
  
  Limit Remote Management Access to Specific IP Addresses
  
  If remote management is required, harden the device so that it can be accessed only by certain IP addresses, rather than the default setting of any. By accessing the configuration screen (Administration > Management Interface > Web Access), an administrator can change the Remote IP address field to ensure only devices with specified IP addresses can access the device.

Fixed Software

• Cisco has not released and will not release firmware updates to address the vulnerability described in this advisory. The Cisco RV180 Router and the Cisco RV180W Router have entered the end-of-life (EoL) process. Please refer to the EoL notices for these products:
  

  • End-of-Sale and End-of-Life Announcement for the Cisco RV180W Wireless-N Multifunction VPN Router
  • End-of-Sale and End-of-Life Announcement for the Cisco RV180 VPN Router

  Customers are encouraged to migrate to the Cisco RV130W Wireless-N Multifunction VPN Router.
  
  When considering a device migration, 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 new devices will be sufficient for their network needs; new devices contain sufficient memory, and current hardware and software configurations will continue to be supported properly by the new product. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

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 and reported to Cisco from security researcher Harri Kuosmanen.

URL

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160803-rv180_2

Revision History

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

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