CVE-2019-19194

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on Telink Semiconductor BLE SDK versions before November 2019 for TLSR8x5x through 3.4.0, TLSR823x through 1.3.0, and TLSR826x through 3.3 devices installs a zero long term key (LTK) if an out-of-order link-layer encryption request is received during Secure Connections pairing. An attacker in radio range can have arbitrary read/write access to protected GATT service data, cause a device crash, or possibly control a device's function by establishing an encrypted session with the zero LTK.

CVSS v3.0 8.8 HIGH
CVSS v2.0 5.8 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:A/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 6.5 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.telink-semi.com/ble	Vendor Advisory
https://asset-group.github.io/disclosures/sweyntooth/	Exploit Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:*:*:*:*:*:*:*:*

cpe:2.3:h:telink-semi:tlsr8258:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:*:*:*:*:*:*:*:*

cpe:2.3:h:telink-semi:tlsr8269:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:*:*:*:*:*:*:*:*

cpe:2.3:h:telink-semi:tlsr8253:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:*:*:*:*:*:*:*:*

cpe:2.3:h:telink-semi:tlsr8251:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:*:*:*:*:*:*:*:*

cpe:2.3:h:telink-semi:tlsr8232:-:*:*:*:*:*:*:*

Information

Published : 2020-02-12 07:15

Updated : 2020-08-24 10:37

NVD link : CVE-2019-19194

Mitre link : CVE-2019-19194

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

telink-semi

tlsr8258
tlsr8251
tlsr8251_ble_sdk
tlsr8232_ble_sdk
tlsr8269
tlsr8232
tlsr8253_ble_sdk
tlsr8269_ble_sdk
tlsr8253
tlsr8258_ble_sdk

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