Cisco Small Business RV Series Routers Command Injection Vulnerability

Vulnerability

A command injection vulnerability exists in the web-based management interface of certain Cisco Small Business RV Series Routers, specifically the RV016, RV042, RV042G, RV082, RV320, and RV325 models, when the remote management feature is enabled. The flaw stems from insufficient validation of user-supplied input, allowing an authenticated remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system [1].

Exploitation

An attacker must have valid administrative credentials and network access to the device's web-based management interface. By sending crafted input to a specific field in the interface, the attacker can inject commands that are executed with root-level privileges. No user interaction beyond the initial authentication is required [1].

Impact

Successful exploitation grants the attacker arbitrary command execution on the underlying Linux operating system with root-level privileges, leading to full compromise of the device's confidentiality, integrity, and availability [1].

Mitigation

Cisco has not released a firmware update to address this vulnerability at the time of publication. No workarounds exist, but administrators can reduce the attack surface by disabling the remote management feature if it is not operationally required. Note that this feature is disabled by default [1].