Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-34144

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
07/09/2021
Last modified:
09/09/2021

Description

The Bluetooth Classic implementation in the Zhuhai Jieli AC6366C BT SDK through 0.9.1 does not properly handle the reception of truncated LMP_SCO_Link_Request packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity.

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 3.30 LOW
Vector: AV:A/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
3.30
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:zh-jieli:fw-ac63_bt_sdk:*:*:*:*:*:*:*:* 0.9.1 (including)
cpe:2.3:h:zh-jieli:ac6936:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6951:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6952:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6954:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6955:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6956:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6963:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6965:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6966:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6969:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6973:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6976:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6983:-:*:*:*:*:*:*:*
cpe:2.3:h:zh-jieli:ac6986:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools