CVE Vulnerability

CVE-2020-16630

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 5.5 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.usenix.org/system/files/sec20-zhang-yue.pdf Exploit Third Party Advisory
http://software-dl.ti.com/simplelink/esd/simplelink_cc13x2_26x2_sdk/3.20.00.68/exports/changelog.html Vendor Advisory
Configurations

Configuration 1

cpe:2.3:o:ti:real-time_operating_system:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:z-stack:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:15.4-stack:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:openthread:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:easylink:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:ble5-stack:-:*:*:*:*:*:*:*
cpe:2.3:a:ti:dynamic_multi-protocal_manager:-:*:*:*:*:*:*:*
Information

Published : 2021-09-20 08:15

Updated : 2021-10-07 01:13

NVD link : CVE-2020-16630

Mitre link : CVE-2020-16630

Products Affected
No products.
CWE
CWE-863