Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.009
EPSS Ranking 75.1%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 5.8
References
Products affected by CVE-2019-19194
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cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:-
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cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:1.3.0
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cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:-
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cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:3.4.0
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cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:-
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cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:3.4.0
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cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:-
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cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:3.4.0
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cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:-
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cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:3.3
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cpe:2.3:h:telink-semi:tlsr8232:-
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cpe:2.3:h:telink-semi:tlsr8251:-
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cpe:2.3:h:telink-semi:tlsr8253:-
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cpe:2.3:h:telink-semi:tlsr8258:-
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cpe:2.3:h:telink-semi:tlsr8269:-