CVE Feed

    Dashboard / CVE / CVE-2019-19194

    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.

    Published:Feb 12, 2020
    Last Modified:Nov 21, 2024
    EPS:Feb 12, 2020
    EPSS Score:0.00927
    CVSS Score:8.8

    Affected Products

    Vendor
    Telink-semi
    Product
    Tlsr8232
    Vendor
    Telink-semi
    Product
    Tlsr8232 Ble Sdk
    Vendor
    Telink-semi
    Product
    Tlsr8251
    Vendor
    Telink-semi
    Product
    Tlsr8251 Ble Sdk
    Vendor
    Telink-semi
    Product
    Tlsr8253
    Vendor
    Telink-semi
    Product
    Tlsr8253 Ble Sdk
    Vendor
    Telink-semi
    Product
    Tlsr8258
    Vendor
    Telink-semi
    Product
    Tlsr8258 Ble Sdk
    Vendor
    Telink-semi
    Product
    Tlsr8269
    Vendor
    Telink-semi
    Product
    Tlsr8269 Ble Sdk

    Exploits

    https://asset-group.github.io/disclosures/sweyntooth/https://asset-group.github.io/disclosures/sweyntooth/https://github.com/louisabricot/writeup-cve-2019-19194

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High