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://nvd.nist.gov/vuln/detail/CVE-2020-6616
• https://github.com/seemoo-lab/internalblue/blob/master/doc/rng.md
• https://media.ccc.de/v/DiVOC-6-finding_eastereggs_in_broadcom_s_bluetooth_random_number_generator
• https://security.samsungmobile.com/securityUpdate.smsb
• https://support.apple.com/HT211168
• https://support.apple.com/kb/HT211100
• https://support.apple.com/kb/HT211168
• https://twitter.com/naehrdine/status/1255980443368919045
• https://twitter.com/naehrdine/status/1255981245147877377
• http://bluetooth.lol
• http://seclists.org/fulldisclosure/2020/May/49