VDB-197151 · CVE-2021-39805 · A-212694559

Google Android 12.0 Bluetooth l2c_ble.cc l2cble_process_sig_cmd out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Google Android 12.0 and classified as problematic. This impacts the function l2cble_process_sig_cmd of the file l2c_ble.cc of the component Bluetooth. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2021-39805. The attack may be carried out on the physical device. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Google Android 12.0 (Smartphone Operating System). It has been classified as problematic. This affects the function l2cble_process_sig_cmd of the file l2c_ble.cc of the component Bluetooth. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality.

The weakness was released 04/13/2022 as A-212694559. It is possible to read the advisory at source.android.com. This vulnerability is uniquely identified as CVE-2021-39805 since 08/23/2021. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Smartphone Operating System

Vendor

Google

Name

Android

Version

12.0

License

free

Website

Vendor: https://www.google.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.4
VulDB Meta Temp Score: 2.3

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
04/13/2022 +233 days 🔍
04/13/2022 +0 days 🔍
04/18/2022 +5 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-212694559
Status: Confirmed

CVE: CVE-2021-39805 (🔍)
GCVE (CVE): GCVE-0-2021-39805
GCVE (VulDB): GCVE-100-197151
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 04/13/2022 08:29
Updated: 04/18/2022 14:45
Changes: 04/13/2022 08:29 (43), 04/18/2022 14:45 (1)
Complete: 🔍
Cache ID: 216::103