AMTT Hotel Broadband Operation System get_expiredtime.php sql injection

A vulnerability was determined in AMTT Hotel Broadband Operation System 1.0. Affected by this vulnerability is an unknown functionality of the file /user/portal/get_expiredtime.php. This manipulation of the argument uid causes sql injection. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.