Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. These vulnerabilities are due to insufficient input validation by the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device and then persuading a user to visit specific web pages that include malicious payloads. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. Cisco has not released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-stored-xss-vqz7gC8W
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface.
These vulnerabilities are due to insufficient input validation by the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device and then persuading a user to visit specific web pages that include malicious payloads. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
Cisco has not released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-stored-xss-vqz7gC8W
These vulnerabilities affect all software releases for the following Cisco RV Series Small Business Routers:
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 RV Series Small Business Routers:
There are no workarounds that address these vulnerabilities.
To mitigate these vulnerabilities on Cisco Small Business RV320 and RV325 Routers, disable remote management. To mitigate these vulnerabilities on Cisco Small Business RV016, RV042, RV042G, and RV082 Routers, disable remote management and block access to ports 443 and 60443. The routers will still be accessible through the LAN interface after the mitigation has been implemented.
To disable remote management, do the following:
First, add a new service to the access rules of the device for port 60443. It is not necessary to create a service for port 443 because that service is predefined in the services list.
Next, create access rules to block ports 443 and 60443. To create an access rule to block port 443, do the following:
To create an access rule to block port 60443, repeat the preceding steps, but for Step 5, choose HTTPS (TCP 60443-60443) from the Service drop-down list.
Note: If a second WAN port is being used, two additional ACL rules need to be set up using the WAN number and IP address for the second WAN port.
While these mitigations have been deployed and were proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
Cisco has not released and will not release software updates to address the vulnerabilities that are described in this advisory. The Cisco Small Business RV016, RV042, RV042G, and RV082 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 RV016 Multi-WAN VPN Router
End-of-Sale and End-of-Life Announcement for the Cisco RV042 and RV042G VPN Router (all models)
End-of-Sale and End-of-Life Announcement for the Cisco RV082 Dual WAN VPN Router
End-of-Sale and End-of-Life Announcement for the Cisco RV320 and RV325 Dual Gigabit WAN VPN Router
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 the new products will be sufficient for their network needs, that the new devices contain sufficient memory, and that 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.
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.
Cisco would like to thank Leetsun for reporting these vulnerabilities.
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.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.0 | Initial public release. | - | Final | 2023-APR-05 |
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