Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities

Vulnerability

The web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W routers contains an improper input validation vulnerability [1]. This flaw resides in how the interface processes HTTP requests. An attacker can exploit this by sending crafted HTTP requests to an affected device. The vulnerability affects all firmware versions of these routers. The interface is accessible over LAN by default, and over WAN if remote management is enabled (disabled by default) [1].

Exploitation

To exploit, an attacker must have valid administrator credentials for the affected device [1]. The attacker then sends specially crafted HTTP requests to the web-based management interface. No user interaction is required beyond authentication. The attack can be carried out from the LAN or WAN (if remote management enabled).

Impact

Successful exploitation allows an attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition [1]. This gives the attacker full control over the device or disrupts its operation.

Mitigation

Cisco has not released software updates that address these vulnerabilities [1]. There are no workarounds [1]. Until a fix is available, administrators should ensure remote management is disabled and restrict access to the management interface to trusted users only.