Trustwave SpiderLabs Security Advisory TWSL2013-020: Hard-Coded Bluetooth PIN Vulnerability in LIXIL Satis Toilet Published: 08/01/13 Version: 1.0 Vendor: LIXIL Corporation Product: Satis Version affected: Unknown Product description: The Satis is a "smart" toilet. It is controlled using LIXIL's "My Satis" Android application, which communicates with the toilet using Bluetooth. Finding 1: Hard-Coded Bluetooth PIN *****Credit: Daniel Crowley of Trustwave SpiderLabs CVE: CVE-2013-4866 CWE: CWE-259 The "My Satis" Android application has a hard-coded Bluetooth PIN of "0000" as can be seen in the following line of decompiled code from the application: BluetoothDevice localBluetoothDevice = BluetoothManager.getInstance().execPairing(paramString, "0000") As such, any person using the "My Satis" application can control any Satis toilet. An attacker could simply download the "My Satis" application and use it to cause the toilet to repeatedly flush, raising the water usage and therefore utility cost to its owner. Attackers could cause the unit to unexpectedly open/close the lid, activate bidet or air-dry functions, causing discomfort or distress to user. Vendor Response: No response received. Remediation Steps: No patch currently exists for this issue. Revision History: 06/14/13 - Attempt to contact vendor 07/10/13 - Attempt to contact vendor 07/12/13 - Attempt to contact vendor 08/01/13 - Advisory published References 1. http://www.lixil.co.jp/lineup/toiletroom/shower/satis/ About Trustwave: Trustwave is the leading provider of on-demand and subscription-based information security and payment card industry compliance management solutions to businesses and government entities throughout the world. For organizations faced with today's challenging data security and compliance environment, Trustwave provides a unique approach with comprehensive solutions that include its flagship TrustKeeper compliance management software and other proprietary security solutions. Trustwave has helped thousands of organizations--ranging from Fortune 500 businesses and large financial institutions to small and medium-sized retailers--manage compliance and secure their network infrastructure, data communications and critical information assets. Trustwave is headquartered in Chicago with offices throughout North America, South America, Europe, Africa, China and Australia. For more information, visit https://www.trustwave.com About Trustwave SpiderLabs: SpiderLabs(R) is the advanced security team at Trustwave focused on application security, incident response, penetration testing, physical security and security research. The team has performed over a thousand incident investigations, thousands of penetration tests and hundreds of application security tests globally. In addition, the SpiderLabs Research team provides intelligence through bleeding-edge research and proof of concept tool development to enhance Trustwave's products and services. https://www.trustwave.com/spiderlabs Disclaimer: The information provided in this advisory is provided "as is" without warranty of any kind. Trustwave disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Trustwave or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Trustwave or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. ________________________________ This transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format.