Mitsubishi Electric smartRTU Firmware

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. An unauthenticated remote OS Command Injection vulnerability allows an attacker to execute arbitrary commands on the RTU due to the passing of unsafe user supplied data to the RTU's system shell. Functionality in mobile.php provides users with the ability to ping sites or IP addresses via Mobile Connection Test. When the Mobile Connection Test is submitted, action.php is called to execute the test. An attacker can use a shell command separator (;) in the host variable to execute operating system commands upon submitting the test data.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Undocumented hard-coded user passwords for root, ineaadmin, mitsadmin, and maint could allow an attacker to gain unauthorised access to the RTU. (Also, the accounts ineaadmin and mitsadmin are able to escalate privileges to root without supplying a password due to insecure entries in /etc/sudoers on the RTU.)

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Hard-coded SSH keys allow an attacker to gain unauthorised access or disclose encrypted data on the RTU due to the keys not being regenerated on initial installation or with firmware updates. In other words, these devices use private-key values in /etc/ssh/ssh_host_rsa_key, /etc/ssh/ssh_host_ecdsa_key, and /etc/ssh/ssh_host_dsa_key files that are publicly available from the vendor web sites.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Stored cleartext passwords could allow an unauthenticated attacker to obtain configured username and password combinations on the RTU due to the weak credentials management on the RTU. An unauthenticated user can obtain the exposed password credentials to gain access to the following services: DDNS service, Mobile Network Provider, and OpenVPN service.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. An unauthenticated remote configuration download vulnerability allows an attacker to download the smartRTU's configuration file (which contains data such as usernames, passwords, and other sensitive RTU data).

Mitsubishi Electric Europe B.V. SmartRTU devices allow remote attackers to obtain sensitive information (directory listing and source code) via a direct request to the /web URI.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. A world-readable /usr/smartrtu/init/settings.xml configuration file on the file system allows an attacker to read sensitive configuration settings such as usernames, passwords, and other sensitive RTU data due to insecure permission assignment.

Mitsubishi Electric Europe B.V. SmartRTU devices allow XSS via the username parameter or PATH_INFO to login.php.

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. A number of stored cross-site script (XSS) vulnerabilities allow an attacker to inject malicious code directly into the application. An example input variable vulnerable to stored XSS is SerialInitialModemString in the index.php page.