Description
Some Broadcom chips mishandle Bluetooth random-number generation because a low-entropy Pseudo Random Number Generator (PRNG) is used in situations where a Hardware Random Number Generator (HRNG) should have been used to prevent spoofing. This affects, for example, Samsung Galaxy S8, S8+, and Note8 devices with the BCM4361 chipset. The Samsung ID is SVE-2020-16882 (May 2020).
References
- https://security.samsungmobile.com/securityUpdate.smsb
- https://support.apple.com/kb/HT211100
- http://bluetooth.lol
- https://media.ccc.de/v/DiVOC-6-finding_eastereggs_in_broadcom_s_bluetooth_random_number_generator
- https://twitter.com/naehrdine/status/1255981245147877377
- https://github.com/seemoo-lab/internalblue/blob/master/doc/rng.md
- https://twitter.com/naehrdine/status/1255980443368919045
- https://support.apple.com/kb/HT211168
- 20200529 APPLE-SA-2020-05-26-1 iOS 13.5 and iPadOS 13.5 mailing-list
- https://support.apple.com/HT211168