CVE-2020-16630

Sažetak

TI’s BLE stack caches and reuses the LTK’s property for a bonded mobile. A LTK can be an unauthenticated-and-no-MITM-protection key created by Just Works or an authenticated-and-MITM-protection key created by Passkey Entry, Numeric Comparison or OOB. Assume that a victim mobile uses secure pairing to pair with a victim BLE device based on TI chips and generate an authenticated-and-MITM-protection LTK. If a fake mobile with the victim mobile’s MAC address uses Just Works and pairs with the victim device, the generated LTK still has the property of authenticated-and-MITM-protection. Therefore, the fake mobile can access attributes with the authenticated read/write permission.

Reference

CVSS

Base:	4.3
Impact:	4.9
Exploitability:	5.5

Pristup

Vektor	Složenost	Autentikacija
ADJACENT_NETWORK	MEDIUM	NONE

Impact

Povjerljivost	Cjelovitost	Dostupnost
PARTIAL	PARTIAL	NONE

CVSS vektor

AV:A/AC:M/Au:N/C:P/I:P/A:N

Zadnje važnije ažuriranje

07-10-2021 - 13:13

Objavljeno

20-09-2021 - 20:15