CVEvulnerability

CVE-2020-16630

6.8 MEDIUM Published 2021-09-20 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-09-20
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:A/AC:M/Au:N/C:P/I:P/A:N
Weaknesses
CWE-863

Description

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.

Affected configurations

• ti 15.4-stack • ti ble5-stack • ti dynamic multi-protocal manager • ti easylink • ti openthread • ti z-stack • ti real-time operating system

Related

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References