CVE-2019-19834

Vulnerability

A directory traversal vulnerability exists in the ruckus_cli2 component of Ruckus Wireless Unleashed firmware versions through 200.7.10.102.64. The bug is triggered by issuing the CLI commands enable, debug, script, and exec with a path traversal parameter (e.g., ../../../bin/sh), allowing an attacker to escape the intended restricted CLI environment. The vulnerability is reachable after obtaining CLI access, which may require prior authentication bypass [1].

Exploitation

An attacker must first gain access to the Ruckus Unleashed CLI. This can be achieved through an authentication bypass or other means. Once authenticated, the attacker executes the sequence enable (to enter privileged mode), debug, script, and exec followed by a path traversal string to reference /bin/sh or another executable. No user interaction beyond the attacker's own actions is required.

Impact

Successful exploitation allows the attacker to execute arbitrary commands with root privileges, effectively gaining full control over the affected access point. This can lead to complete compromise of confidentiality, integrity, and availability of the device.

Mitigation

As of the publication date, no official patch has been released by Ruckus Networks. Users are advised to monitor the vendor's security advisories for firmware updates. Until a fix is available, restricting network access to the management interface of affected devices can reduce exposure [1].