Google Android 9.0/10.0/11.0/12.0 Bluetooth Setting ConnectedDeviceDashboardFragment.java onAttach permission

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.
5.1$5k-$25k0.00

A vulnerability was found in Google Android 9.0/10.0/11.0/12.0 (Smartphone Operating System) and classified as critical. Affected by this issue is the function onAttach of the file ConnectedDeviceDashboardFragment.java of the component Bluetooth Setting Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-275. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In onAttach of ConnectedDeviceDashboardFragment.java, there is a possible permission bypass due to a confused deputy. This could lead to local escalation of privilege in Bluetooth settings with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-9Android ID: A-194695497

The weakness was disclosed 01/15/2022 as A-194695497. The advisory is available at source.android.com. This vulnerability is handled as CVE-2021-39626 since 08/23/2021. The exploitation is known to be easy. Local access is required to approach this attack. The successful exploitation needs a simple authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 01/19/2022). It is expected to see the exploit prices for this product increasing in the near future.This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

Applying a patch is able to eliminate this problem.

Productinfoedit

Type

Vendor

Name

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

AVACAuCIA
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-275
ATT&CK: T1222

Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: source.android.com

Timelineinfoedit

08/23/2021 CVE assigned
01/15/2022 +145 days Advisory disclosed
01/15/2022 +0 days VulDB entry created
01/19/2022 +4 days VulDB last update

Sourcesinfoedit

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

Advisory: A-194695497
Status: Confirmed

CVE: CVE-2021-39626 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfoedit

Created: 01/15/2022 08:09 AM
Updated: 01/19/2022 02:21 PM
Changes: (1) source_cve_nvd_summary
Complete: 🔍

Comments

No comments yet. Languages: en.

Please log in to comment.

Do you know our Splunk app?

Download it now for free!