CVE-2022-20825: Cisco Security Advisory: Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service Vulnerability

**

Summary

**

• A vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly, resulting in a denial of service (DoS) condition.

  This vulnerability is due to insufficient user input validation of incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device using root-level privileges.

  Cisco has not 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-sb-rv-overflow-s2r82P9v

**

Affected Products

**

• This vulnerability affects the following Cisco Small Business RV Series Routers:

  • RV110W Wireless-N VPN Firewall
  • RV130 VPN Router
  • RV130W Wireless-N Multifunction VPN Router
  • RV215W Wireless-N VPN Router

  Determine the Device Configuration

  The web-based management interface of these devices is available through a local LAN connection, which cannot be disabled, or through the WAN connection if the remote management feature is enabled. By default, the remote management feature is disabled on these devices.

  To determine whether the remote management feature is enabled on a device, open the web-based management interface and choose Basic Settings > Remote Management. If the Enable check box is checked, remote management is enabled on the device.

  Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.

**

Workarounds

**

• There are no workarounds that address this vulnerability.

**

Fixed Software

**

• Cisco has not released and will not release software updates to address the vulnerability described in this advisory. The Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers have entered the end-of-life process. Customers are advised to refer to the end-of-life notices for these products:

  End-of-Sale and End-of-Life Announcement for the Cisco Small Business RV Series Routers (selected models)

  Customers are encouraged to migrate to the Cisco Small Business RV132W, RV160, or RV160W Routers.

  When considering a device migration, 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 new devices will be sufficient for their network needs; the 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

**

• Cisco would like to thank security researcher Puzhuo Liu from IIE, CAS for reporting this vulnerability.

**

Cisco Security Vulnerability Policy

**

• 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

**

**

Revision History

**

• Version

  Description

  Section

  Status

  Date

  1.0

  Initial public release.

  -

  Final

  2022-JUN-15

  Show Less

**

Legal Disclaimer

**

• THIS DOCUMENT IS PROVIDED ON AN “AS IS” BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

  A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.