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HIGH · 8.8

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 thr...

Vulnerability Description

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 Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
Telink-SemiTlsr8258 Ble Sdk<= 3.4.0
Telink-SemiTlsr8258-
Telink-SemiTlsr8269 Ble Sdk<= 3.3
Telink-SemiTlsr8269-
Telink-SemiTlsr8253 Ble Sdk<= 3.4.0
Telink-SemiTlsr8253-
Telink-SemiTlsr8251 Ble Sdk<= 3.4.0
Telink-SemiTlsr8251-
Telink-SemiTlsr8232 Ble Sdk<= 1.3.0
Telink-SemiTlsr8232-

References

FAQ

What is CVE-2019-19194?

CVE-2019-19194 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 thr...

How severe is CVE-2019-19194?

CVE-2019-19194 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-19194?

Check the references section above for vendor advisories and patch information. Affected products include: Telink-Semi Tlsr8258 Ble Sdk, Telink-Semi Tlsr8258, Telink-Semi Tlsr8269 Ble Sdk, Telink-Semi Tlsr8269, Telink-Semi Tlsr8253 Ble Sdk.