CVE-2019-19194
Last modified
CVE-2019-19194 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Telink-Semi | Tlsr8258 Ble Sdk | <= 3.4.0 |
| Telink-Semi | Tlsr8269 Ble Sdk | <= 3.3 |
| Telink-Semi | Tlsr8253 Ble Sdk | <= 3.4.0 |
| Telink-Semi | Tlsr8251 Ble Sdk | <= 3.4.0 |
| Telink-Semi | Tlsr8232 Ble Sdk | <= 1.3.0 |
References
- http://www.telink-semi.com/bleVendor Advisory
- https://asset-group.github.io/disclosures/sweyntooth/Exploit, Third Party Advisory
- http://www.telink-semi.com/bleVendor Advisory
- https://asset-group.github.io/disclosures/sweyntooth/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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