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Penetration testing of a smart speaker
KTH, School of Electrical Engineering and Computer Science (EECS).
2023 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Penetrationstestning av en smart högtalare (Swedish)
Abstract [en]

Smart speakers are becoming increasingly ubiquitous. Previous research has studied the security of these devices; however, only some studies have employed a penetration testing methodology. Moreover, most studies have only investigated models by well-known brands such as the Amazon or Google. Therefore, there is a research gap of penetration tests on less popular smart speaker models. This study aims to address this gap by conducting a penetration test on the less popular JBL Link Music with firmware version 23063250. The results show that the speaker is subject to several security threats and is vulnerable to some attacks. The Bluetooth Low Energy implementation is vulnerable to passive eavesdropping. Additionally, the speaker is vulnerable to an 802.11 denial of service attack, and a boot log containing sensitive information can be accessed through a serial communication interface. It is concluded that the speaker is, in some aspects, insecure.

Abstract [sv]

Smarta högtalare blir alltmer närvarande. Tidigare forskning har undersökt säkerheten kring dessa, dock har endast några använt en penetrerings testnings metolologi. Därutover har de flesta studier endast studerat modeller av välkända varumärken som Google eller Amazon. Därmed finns en vetenskaplig kunskapslucka kring penetrationstester av mindre populära modeller. Denna studie syftar till att bemöta denna lucka genom att utföra ett penetrationstest av den mindre populära JBL Link Music med mjukvaruversion 23063250. Resultaten visar att högtalaren är utsatt för flera säkerhetshot och är sårbar för några attacket. Bluetooth Low Energy implementationen är sårbar för passiv avlyssning. Därutöver är högtalaren sårbar för en 802.11 denial of service attack och en boot logg innehållande känslig information kan nås genom ett seriellt kommunikations gränssnitt. Slutsatsen dras att högtalaren, i vissa aspekter, är osäker.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology , 2023. , p. 45
Series
TRITA-EECS-EX ; 2023:714
Keywords [en]
Penetration testing, Ethical hacking, Smart speaker, Cybersecurity, Internet of Things
Keywords [sv]
Penetrationstestning, Etisk hackning, Smart högtalare, Cybersäkerhet, Sakernas Internet
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-338115OAI: oai:DiVA.org:kth-338115DiVA, id: diva2:1805001
Educational program
Bachelor of Science - Information and Communication Technology
Presentation
2022-09-05, via Zoom https://kth-se.zoom.us/j/5680136250, Kistagången 16, Stockholm, 14:00 (English)
Supervisors
Examiners
Available from: 2023-11-02 Created: 2023-10-15 Last updated: 2023-11-02Bibliographically approved

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