DEF CON 32 - Bluetooth Blues: Unmasking CVE 2023-52709-The TI BLE5-Stack Attack - Kevin Mitchell
Source: YouTube · DEFCONConference · published Oct 16, 2024 · 26:29
Security researcher Kevin Mitchell discovered CVE-2023-5279, a Bluetooth vulnerability in Texas Instruments' stack causing denial-of-service attacks in keyless entry systems that prevents device connection until hard reset 0:06-0:24.
Key Takeaways:
• The vulnerability affects phone-as-key systems and causes devices to generate unresolvable private addresses, blocking connection until hard reset 11:18-11:33.
• The disclosure process lasted several months, with TI initially unable to reproduce the issue until Bosch engineers provided verification 5:25-7:34.
• The root cause involves Bluetooth privacy features; when encryption fails during pairing, devices discard MAC addresses and generate unresolvable ones 19:00-20:13.
• The vulnerability initially affected 19 parts and 2 SDKs, later expanding to 28 parts across 6 software versions 20:47-21:50.
• Texas Instruments developed a mitigating SDK within 2 weeks of finally reproducing the issue 9:52-10:03.
The vulnerability demonstrates significant potential impact across multiple industries beyond automotive, with estimated costs in the millions for recalls and remediation 23:00-24:30.
Sources:
- 0:06-0:24 Introduction to CVE-2023-5279 vulnerability
- 5:25-7:34 Disclosure process with TI and Bosch
- 9:52-10:03 TI's development of mitigation
- 11:18-11:33 Denial-of-service impact explanation
- 19:00-20:13(https://www.youtube.com/watch
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Transcript Preview
First 800 characters of the transcript
okay uh thank you all for joining uh my name is Kevin Mitchell today I want to talk to you all about a vulnerability that I discovered while testing a phonus key system um the official vulnerability title is um cve 2023 um 5279 the name of this talk is Bluetooth Blues unmasking cve 2023 5279 the ti5 stack attack okay okay so here's the agenda um first I'm going to do a brief introduction uh go into a little bit of speaker bio um look at the impact of denial of service attacks on keyless entry systems and then we're going to jump into the origin of the vulnerability itself um the timeline the testing setup the testing results the outcome the consequences and then I want to talk to you about the vulnerability disclosure process uh with Texas Instruments and Bosch and then we're going to jump…