CVE-2019-19194
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
44.0%
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.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| telink-semi | tlsr8258 | - | cpe:2.3:h:telink-semi:tlsr8258:-:*:*:*:*:*:*:* |
| telink-semi | tlsr8258_ble_sdk | * | cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:*:*:*:*:*:*:*:* |
| telink-semi | tlsr8269 | - | cpe:2.3:h:telink-semi:tlsr8269:-:*:*:*:*:*:*:* |
| telink-semi | tlsr8269_ble_sdk | * | cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:*:*:*:*:*:*:*:* |
| telink-semi | tlsr8253 | - | cpe:2.3:h:telink-semi:tlsr8253:-:*:*:*:*:*:*:* |
| telink-semi | tlsr8253_ble_sdk | * | cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:*:*:*:*:*:*:*:* |
| telink-semi | tlsr8251 | - | cpe:2.3:h:telink-semi:tlsr8251:-:*:*:*:*:*:*:* |
| telink-semi | tlsr8251_ble_sdk | * | cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:*:*:*:*:*:*:*:* |
| telink-semi | tlsr8232 | - | cpe:2.3:h:telink-semi:tlsr8232:-:*:*:*:*:*:*:* |
| telink-semi | tlsr8232_ble_sdk | * | cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:*:*:*:*:*:*:*:* |
Related
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
44.0%