CVE-2020-6616 Information

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).

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://bluetooth.lol http://seclists.org/fulldisclosure/2020/May/49 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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5