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Bluetooth - Threats and Security Measures

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Security Mode 1: The Bluetooth device does not itself initiate any special ..... A more detailed description of the Bluetooth security architecture is ...

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Bluetooth Threats and Security Measures This BSI brochure is aimed at security officers and end users of Bluetooth devices. It describes the possible threats associated with the use of Bluetooth and identifies appropriate protective measures. Bundesamt f�r Sicherheit in der Informationstechnik Local Wireless Communication project team PO Box 20 03 63 D-53133 Bonn GERMANY Tel.: +49 228 99 9582-0 e-mail: bluetooth.lwc@bsi.bund.de Internet: http://www.bsi.bund.de/ � Bundesamt f�r Sicherheit in der Informationstechnik 2003 3 Contents 1 The Bluetooth Specification 4 1.1 Technical Basis 4 1.2 Protocol Architecture 4 1.3 Connection Establishment and Network Topologies 4 1.4 Cryptographic Security Mechanisms 5 1.5 Security Modes 6 2 Threats Associated With The Use Of Bluetooth 7 2.1 Weaknesses in the Security Concept 7 2.2 Man in the Middle Attacks 7 2.3 Problems with Encryption 8 2.4 Uncontrolled Propagation of Radio Waves 8 2.5 Movement Profiles 9 2.6 Availability Problems 9 2.7 Other Security Aspects 9 3 Protective Measures 9 3.1 Protection of Bluetooth devices 9 3.2 Advice on the Choice of PINs 10 3.3 Other Protective Measures 11 3.4 Residual Risk 11 4 Looking Ahead 12 5 References and links 13 6 Acronyms 14 Bundesamt f�r Sicherheit in der Informationstechnik 4 1 The Bluetooth Specification Bluetooth is an open industry standard (see IEEE 802.15.1-2002 [1]) for the unlicensed short-range radio communication of voice and data between IT devices, eliminating any need for wires and cables and permitting ad hoc networking. Development of Bluetooth is the result of an initiative in 1998 by the Bluetooth Special Interest Group (SIG) [2], whose membership today numbers 2,500 manufacturers. The present version of the specification is V1.1 [3], however, there are still many devices in use that are based on the previous version 1.0b. 1.1 Technical Basis Bluetooth operates in the 2.4 GHz ISM frequency band on 79 channels using the frequencies ...

Source: www.bsi.bund.de

 

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