Cisco Small Business RV016, RV042, RV042G, RV082 , RV320, and RV325 Routers Cross-Site Scripting Vulnerabilities

Vulnerability

Multiple cross-site scripting (XSS) vulnerabilities exist in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers [1]. The vulnerabilities are due to insufficient input validation by the web-based management interface. An attacker can exploit these by sending crafted HTTP requests to an affected device. Cisco has not released software updates that address these vulnerabilities [1].

Exploitation

An unauthenticated, remote attacker can exploit these vulnerabilities by sending specially crafted HTTP requests to the affected device and then persuading a user to visit specific web pages that include malicious payloads [1]. The attacker does not require any prior authentication or access to the device, only the ability to deliver the crafted request and convince a user to interact with the malicious content.

Impact

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 [1]. This could lead to disclosure of session tokens, credentials, or other sensitive data, and potentially allow the attacker to perform actions on behalf of the authenticated user within the web interface.

Mitigation

Cisco has not released software updates that address these vulnerabilities [1]. There are no workarounds that fully address these vulnerabilities. As a mitigation, for RV320 and RV325 routers, disable remote management. For RV016, RV042, RV042G, and RV082 routers, disable remote management and block access to ports 443 and 60443 [1]. Detailed steps to disable remote management and block ports are provided in the advisory [1].