Shawn Merdinger has reported some vulnerabilities in Hitachi WirelessIP5000, which can be exploited by malicious people to gain access to potentially sensitive information, to modify certain information, and to cause a DoS (Denial of Service).

1) The SNMP service that runs on the IP phone allows read-write access using any credentials. The service cannot be disabled and does not allow the community strings to be changed. This can be exploited to retrieve and modify the device configuration by sending SNMP GetRequest or SetRequest to phone.

2) The phone has an undocumented open port 3390/tcp that allows access to the Unidata Shell upon connection. The service reportedly cannot be disabled and can potentially be exploited to gain access to sensitive information and to cause a DoS.

3) The phone has a hardcoded administrative password of "0000". This may be exploited by a user with physical access to the phone to modify the phone's configuration.

4) The default index page of the phone's HTTP server (8080/tcp) discloses information like phone software versions, phone MAC address, IP address and routing information.

The vulnerabilities have been reported in firmware versions prior to 2.0.1.

Solution
Update to firmware version 2.0.1 or later and change the administrative password manually.

Provided and/or discovered by
Shawn Merdinger

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://www.hitachi-cable.co.jp/ICSFiles/infosystem/security/76659792_e.pdf

Deep Links
Links available to Secunia VIM customers