CVE-2019-19194
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.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| telink-semi tlsr8258_ble_sdk | v ≤ 3.4.0 | — |
| telink-semi tlsr8269_ble_sdk | v ≤ 3.3 | — |
| telink-semi tlsr8253_ble_sdk | v ≤ 3.4.0 | — |
| telink-semi tlsr8251_ble_sdk | v ≤ 3.4.0 | — |
| telink-semi tlsr8232_ble_sdk | v ≤ 1.3.0 | — |
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Attack Surface Management
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