CVE-2019-19194
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
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.
La implementación del Secure Manager Protocol (SMP) de Bluetooth Low Energy en Telink Semiconductor BLE SDK versiones anteriores a noviembre de 2019 para los dispositivos TLSR8x5x versiones hasta 3.4.0, TLSR823x versiones hasta 1.3.0 y TLSR826x versiones hasta 3.3, instala una clave a largo plazo (LTK) cero si una petición de cifrado de capa de enlace fuera de servicio es recibida durante el emparejamiento de Secure Connections. Un atacante dentro del radio de alcance puede tener acceso de lectura/escritura arbitrario a los datos protegidos del servicio GATT, provocar un bloqueo del dispositivo o posiblemente controlar la función de un dispositivo estableciendo una sesión cifrada con el LTK cero.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2019-11-21 CVE Reserved
- 2020-02-12 CVE Published
- 2023-06-17 EPSS Updated
- 2024-08-05 CVE Updated
- 2024-08-05 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
CAPEC
References (2)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://asset-group.github.io/disclosures/sweyntooth | 2024-08-05 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.telink-semi.com/ble | 2020-08-24 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Telink-semi Search vendor "Telink-semi" | Tlsr8258 Ble Sdk Search vendor "Telink-semi" for product "Tlsr8258 Ble Sdk" | <= 3.4.0 Search vendor "Telink-semi" for product "Tlsr8258 Ble Sdk" and version " <= 3.4.0" | - |
Affected
| in | Telink-semi Search vendor "Telink-semi" | Tlsr8258 Search vendor "Telink-semi" for product "Tlsr8258" | - | - |
Safe
|
| Telink-semi Search vendor "Telink-semi" | Tlsr8269 Ble Sdk Search vendor "Telink-semi" for product "Tlsr8269 Ble Sdk" | <= 3.3 Search vendor "Telink-semi" for product "Tlsr8269 Ble Sdk" and version " <= 3.3" | - |
Affected
| in | Telink-semi Search vendor "Telink-semi" | Tlsr8269 Search vendor "Telink-semi" for product "Tlsr8269" | - | - |
Safe
|
| Telink-semi Search vendor "Telink-semi" | Tlsr8253 Ble Sdk Search vendor "Telink-semi" for product "Tlsr8253 Ble Sdk" | <= 3.4.0 Search vendor "Telink-semi" for product "Tlsr8253 Ble Sdk" and version " <= 3.4.0" | - |
Affected
| in | Telink-semi Search vendor "Telink-semi" | Tlsr8253 Search vendor "Telink-semi" for product "Tlsr8253" | - | - |
Safe
|
| Telink-semi Search vendor "Telink-semi" | Tlsr8251 Ble Sdk Search vendor "Telink-semi" for product "Tlsr8251 Ble Sdk" | <= 3.4.0 Search vendor "Telink-semi" for product "Tlsr8251 Ble Sdk" and version " <= 3.4.0" | - |
Affected
| in | Telink-semi Search vendor "Telink-semi" | Tlsr8251 Search vendor "Telink-semi" for product "Tlsr8251" | - | - |
Safe
|
| Telink-semi Search vendor "Telink-semi" | Tlsr8232 Ble Sdk Search vendor "Telink-semi" for product "Tlsr8232 Ble Sdk" | <= 1.3.0 Search vendor "Telink-semi" for product "Tlsr8232 Ble Sdk" and version " <= 1.3.0" | - |
Affected
| in | Telink-semi Search vendor "Telink-semi" | Tlsr8232 Search vendor "Telink-semi" for product "Tlsr8232" | - | - |
Safe
|